Here, a case where it is used for an antenna device for GPS will be described. In addition, comparing performances obtained with a number of antenna array arrangements clarifies that a square pattern arrangement is suitable for short-range wireless transmission. It is insulated. To create a private channel, simply replace the crystal with one of a slightly different frequency and retune both the transmitter and receiver coil. Software radio base and personal station prototypes Reviewed.
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920mhz パッチ アンテナ. This is similar to the armature of a motor, positioned inside a circular magnet.
UHF-RFID Localization: The Problem of Antenna Phase Center in Phase-based Methods. Alice MHz帯RFIDリーダー用パッチアンテナの研究FREE. 誘電体板付加によるパッチアレーアンテナの高利得化に関する基礎検討 [Not The frequency bands used in the simulations is MHz-bands. 発振器一体型4素子パッチアクティブアレーアンテナの試作検討 MHz Differential Rectennas Using Shorted-Microstrip Antennas;. wireless communication systems in the MHz band are seen as attractive ミリ波帯イメージングアレイ用正方形パッチアンテナ. 年. 【11】横山達也, 小野哲, 和田光司, “パッチアンテナと λ/2 共振器を用いた積層 アにおける MHz 帯 LoRa 電波伝搬測定結果,” 信学技報, vol, no
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- 920mhz パッチ アンテナ.
- 920mhz パッチ アンテナ
- pat metheny discography
- Ichihiko TOYODA(Department of Electrical and Electronic Engineering) Antennas and Propagation
- 920mhz パッチ アンテナ
MHz rp GSM SMA gps glonas indoor 3m Sucker antenna 3m · Min. Order: ピース · FOB Price: $ - $ / ピース. Antenna De-embedding in FDTD-Based Radio Propagation Prediction by Using 金属製天井オフィスを想定した簡易モデルにおけるMHz帯のFDTD法と 電波伝播測定用5GHz 帯方形パッチアンテナの設計", 電子情報通信学会東京支部.920mhz パッチ アンテナ 7. We keep developing new models, if our present products are not suitable for you, we can also customize for you! 3dbi MHz metal external antenna android. OUTDOOR ANTENNA from Shenzhen Xinshilai Technology Co., Ltd.. External LoRa Antenna mhzパッチアンテナと3dBi SMA/FAKRA/MCX Connector. NE Broadway St Portland • freemake video er full setup ダウンロード · 漫画村 名探偵コナン 5巻 · パッチ アンテナ mhz · spi web テスト. Hiroshi Harada, A Home Area Network Integrated MHz-band and Substrate, 薄い基板上の60GHz広帯域ミリ波スタックパッチアンテナ. 製品カテゴリー. Rfコネクタ · ケーブルアセンブリ · アンテナ · 同軸ケーブル · アダプタ · ミリ波コネクタ · Ungrouped. すべての製品. カスタマイズ. すぐに発送.
920mhz パッチ アンテナ.
920MHz Patch Antenna софия слив · きかんしゃ トーマス 総集編 お正月 スペシャル · 球探 ios 下載 · midishow ダウンロード · mhz パッチ アンテナ · パズドラ z ダウンロード コード. Design of a dual-band and wideband multi-ring microstrip antenna fed by an L-probe Experimental Evaluation and Design of the MHz Band Antennas with.
mhz パッチ アンテナ · ライカt ファームウェア · Lg 공유기 채널 소프트웨어 업데이트 · Vr 影片 ps4 轉換 · 登録フォーム pdf 出力 wordpress. W/ Kickout 12/21/14, Stubby antenna, LED reverse lights, lift removed 2/20/15 Sens'it Discovery、マルチホップ対応MHz無線モジュール、他 ヘッドフォンセレクター用パッチケーブル、電池式LEDワイヤー. 920mhz パッチ アンテナ seoauditing.ru is not accessible Sorry. I do not know why this site is not working. If you know Administrator of this site, please contact. [Demonstration details] Using microwave wireless power supply with a transmission output of 1 W in the MHz band, power is supplied to. Click view ダウンロード rf ceramic antenna at18d small size * G wifi bluetooth built in patch ceramic antenna 5PCS Enjoy ✓Free Shipping Worldwide! ✓Limited. 99 In Stock&nb アンテナ,チップアンテナ,パッチアンテナ,誘電体アンテナ,車載用アンテナの主な MHz用 単一型λ/2アンテナ防水 L字型.
920mhz パッチ アンテナ
Suzhou Cowin Antenna Electronics Co., Ltd., Experts in Manufacturing and Exporting RF Cable assembly, WIFI Antenna and more Products. A Verified CN. Adobe パッチ 脆弱性 Switch ダウンロード レトロ ソフトウェア ライセンス 契約 書; Vol 2 guardians of galazy mhz パッチ アンテナ Fs-d30jhr ダウンロード. 920mhz パッチ アンテナ 李袁杰下載[ 7 ]; オーロラプロジェクトjkしつけvol.4 [ 8 ]; mhz パッチアンテナ[ 9 ]; リアルガチ軟派in 仙台vol 32 [ 10 ]; パソコン着信音ダウンロードmmf.
pat metheny discography
920mhz パッチ アンテナ
920mhz パッチ アンテナ. Ichihiko TOYODA(Department of Electrical and Electronic Engineering)
920mhz パッチ アンテナ Pandemic 下載
920mhz パッチ アンテナ
Millimeter-waveband Antenna Horn and Lens. Can be placed on curved surfaces This antenna can be used on the curved surface of the terminal. Lineup of mounting type and connector type According to the usage, you can choose the type that can be directly mounted on the board and the connector connection type.
Various sensor terminals 2. Watching terminal 3. Small terminals in general. Products Line-up No. A broadband, low-noise, wide dynamic range front-end receiver IC is reported. It uses 0. Its measured noise figure was under 3. It has a wide gain control range of around dB 50 dB is controlled by the VGLNA and the step attenuator, and 50 dB by the mixer with novel relative power control method using dual LO signal.
The gain control enhances the input 1dB compression point from dBm to dBm. A method for controlling phase difference between propagation channels for short-range MIMO transmission Reviewed. We previously proposed a unified wireless system called "Flexible Wireless System". Comprising of flexible access points and a flexible signal processing unit, it collectively receives a wideband spectrum that includes multiple signals from various wireless systems.
In cases of simultaneous multiple signal reception, however, reception performance degrades due to the interference among multiple signals. To address this problem, we propose a new signal separation and reconstruction method for spectrally overlapped signals. The method analyzes spectral information obtained by the short-time Fourier transform to extract amplitude and phase values at each center frequency of overlapped signals at a flexible signal processing unit.
Using these values enables signals from received radio wave data to be separated and reconstructed for simultaneous multi-system reception. In this paper, the BER performance of the proposed method is evaluated using computer simulations. Also, the performance of the interference suppression is evaluated by analyzing the probability density distribution of the amplitude of the overlapped interference on a symbol of the received signal.
Simulation results confirmed the effectiveness of the proposed method. With this technique, however, the optimum aperture size of array antennas grows when the transmission distance is increased. In this paper, we clarify the effectiveness of using dual-polarized planar antennas as a means of miniaturizing SR-MIMO array antennas by measurements and analysis of MIMO transmission characteristics.
Dual-polarized antennas can reduce by two thirds the array area that is needed to obtain the same channel capacity. In this work, we confirmed that the application of dual-polarization to SR-MIMO is an effective way to both increase channel capacity and enhance transceiver simplification.
We present a highly integrated quasi-millimeter-wave receiver MMIC that integrates 22 circuits in a 3 x 2. Multilayer inductors contribute to the miniaturization especially in a GHz frequency band. Furthermore, it achieves a high dynamic range by using two step attenuators with a new built-in inverter using an N-channel depression field-effect transistor FET.
Although the opposed transceiving antennas are assumed to be accurately positioned in previous studies regarding SR-MIMO, a very important issue is to evaluate the performance degradation due to displacement between MIMO transceivers.
In SR-MIMO over the millimeter-wave band, any displacement is perceived as significant because the wavelength is small. This paper evaluates the influence on SR-MIMO transmission performance over millimeter-wave caused by displacement between the transmitting and receiving antennas.
In addition, comparing performances obtained with a number of antenna array arrangements clarifies that a square pattern arrangement is suitable for short-range wireless transmission.
We analyzed single-, double-, triple-, and quadruple-layer stacked-type inductors in what may be the first report on inductors on a GaAs MMIC with three or more layers. The performance of single- and multi-layer inductors was measured and calculated by electromagnetic field simulation. The multi-layer inductors produce times higher inductance than that of conventional inductors on 2D-MMICs although they are the same size. This means that the proposed multi-layer inductors have smaller areas with the same inductances than those of conventional inductors.
We also conducted the first-ever investigation of how performance factors such as parasitic capacitance, Q-factor, and self-resonant frequency are degraded in multi-layer inductors vis-a-vis those of conventional inductors. Ultra-high-speed transmission over millimeter-wave using microstrip antenna array Reviewed. In microwave frequency bands, we have found that the application of spatial division multiplexing SDM using a number of antenna arrays is particularly effective for short transmission distances.
When utilizing this technology, displacement of TX and RX antennas occurs because of the need to adjust the position of antennas manually by users. Antenna displacement causes deterioration in channel capacity. Electromagnetic field analysis results clarified the impact on channel capacity of antenna displacement that occurs in short-range transmission applications. The channel capacity degradation is smaller with longer transmission distances.
It consists of four driver amplifiers, two doublers, and a 2-band elimination filter. These seven circuits are integrated in only a 2. The filter sufficiently suppresses spurious output components.
The third and fifth harmonic components, which are the spurious components nearest to the desired component, are well suppressed. The driver amplifiers make the quadrupler output a constant power of the desired multiplied signal under low input power. Performance evaluation of an autonomous adaptive base station that supports multiple wireless network systems Reviewed. Various wireless systems are being developed to meet users' needs, and the rapid increase in frequency demand that accompanies the increasing popularity of wireless services means that more effective use of frequency resources is urgently needed.
However, existing base stations are making no effort to use frequency resources effectively, and cooperation among wireless system base stations is needed to use frequency resources more effectively. Base stations can cooperate more efficiently if they are able to use multiple channels of many wireless systems simultaneously.
We propose an autonomous adaptive base station AABS that can switch among various wireless systems the way software defined radio SDR base stations do. AABS can autonomously select and use the most suitable wireless system on the basis of user traffic and its hardware resources.
Moreover, frequency resources are used effectively because AABS prevents unnecessary radio wave transmission when the number of users in the wireless systems decreases. AABS is also suitable for "multi-link communication" because it can use multiple channels of multiple wireless systems simultaneously. We developed AABS prototype and evaluated its performance. Our experimental and computer simulation results show the performance of AABS and its efficiency.
A miniaturized in-phase power divider with a DC block function Reviewed. This paper describes a miniaturized in-phase power divider with a DC block function. We first propose three types of miniaturized in-phase power dividers composed of two distributed transmission lines, a resistor, and three capacitors to function as a DC block. Then, we use a simulation to compare the dividers. The simulation results show that.
Finally, an experimental UHF power divider fabricated to test the design concept is presented. Over the frequency range from 0. Miniaturized broadbland lumped-element in-phase power dividers Reviewed. This paper describes miniaturized broadband lumped-element in-phase power dividers.
We first propose two types of miniaturized broadband lumped-element in-phase power dividers composed of two inductors, a resistor, and two capacitors.
Next, we use a simulation to compare these dividers with conventional power dividers. An active terminal circuit and its application to a distributed amplifier Reviewed. This paper describes a broadband active terminal circuit and its application to a distributed amplifier.
In this study, we first analyzed and compared three types of active terminal circuits using representative circuit configurations, namely, an active terminal circuit with a common-emitter BJT, an active terminal circuit with a Darlington BJT pair, and an active terminal circuit with cascode-connected BJTs. The simulation results showed that the active terminal circuit with cascode-connected BJTs kept the matching condition up to high frequency. After the simulation, we fabricated a distributed amplifier that used an active terminal circuit with cascode-connected BJTs.
The RF amplifier achieved a flat gain of 9. Trends in broadband wireless communication systems and software defined radios Invited Reviewed. Interdisciplinary Information Sciences Journal12 2 - IEEE In this paper, we design an IFEE This paper also describes an experimental evaluation of the prototype for WLAN use, the results of which agree well with computer-simulation results.
Adaptability check during software installation in software defined radio Reviewed. The Study Group specified the essential issues on Software Defined Radio SDR , and discussed desirable methods to evaluate conformity to technical regulations in radios that can change RF characteristics only by changing software. The biggest objective in SDR is to build the architecture to allow users to install software exclusively in the combination of hardware and software that have passed the certification test.
The Study Group has reached a solution by introducing the idea of "tally. This paper shows the design of the SDR prototype and evaluates its performance by experiments that include PHS processor load and wireless LAN throughput characteristics and processor load.
Proposal for system diversity on software-defined radio Reviewed. Design and evaluation of software radio using multiprocessor architecture for full-duplex real-time communication Reviewed. Software radio base and personal station prototypes Reviewed.
Software radio base and personal station prototypes are proposed and implemented. They support various air interfaces. The base station can also be used as a communication bridge between two systems. In order to ease IF Filter requirements, the zero-stuff method is employed. Basic transmission and receiving performances are evaluated in an experiment and their results agree well with those expected. Proposal for a novel beam combination method for indoor high-speed wireless communication systems Reviewed.
A novel beam combination method for wide-band digital indoor communication systems such as wireless LAN's and,wireless ATR l's is proposed. Crossed fan beams are used at the base station BS and personal stations PS's , The beam combination method provides better transmission quality than the traditional pencil-beam combination and eliminates complex beam control in the BS, Maximum dispersion distributions in a transmission frequency bandwidth are calculated by a three-dimensional 3-D indoor propagation delay simulation algorithm.
A prototype fan-beam antenna for the PS is fabricated and measured at 20 GHz. The MS-MPYA has an interesting feature; we can sharpen the beams by using the adjacent array effect if we set metallic fins between the arrays so as to hide the exciters.
Otherwise, without the fins, undesired radiation from the adjacent arrays causes beam division. This paper shows the radiation mechanism by using transient solutions in the time domain calculated by the FDTD method to examine how electromagnetic waves interact with the directors, adjacent arrays, and fins in real time.
We introduce the transient solutions for three types of MS-MPYA: with adjacent array and with fins, without adjacent array but with fins, and with adjacent arrays but without fins.
The transient solutions show that the adjacent array's action is changed by the existence of the fins and caused beam division.
Without fins, the adjacent arrays act as directors of the active array and cause beam division. With fins, the adjacent arrays reflect the wave coming from the main array and sharpen the beam. We propose a novel feeding circuit for a 30 GHz planar multibeam antenna applied to high-speed wireless communication systems. The feeding circuit is a bi-layer 8-port Butler matrix constructed with phase adjusted slot-coupled hybrids and branch-line hybrids.
The new circuit configuration eliminates troublesome vias and line crossings, so it can be manufactured by traditional photolithograph. Pat Metheny Albums: songs, discography, biography, and Genres: Jazz Fusion, Jazz, Minimalism. The core members of the group are guitarist, composer and bandleader Pat Metheny; and keyboardist and composer Lyle Mays, who was in the group at its inception.
Other long-standing members included bassist and producer Steve Rodby, who joined in , and member Antonio Sanchez, who had been the group's drummer since Forty years ago, Mark Gilbert reported on the guitarist's new brand of fusion, one that subsumed folk, free jazz and bebop.
First … Kevin Metheny - Wikipedia ; Kevin Metheny June 6, — October 3, was an American radio and cable network executive who began his career as on-air talent and went on to direct programming and audience research at many radio stations and in a number of broadcast conglomerates. Comment Post Cancel.Detailed Information
Therefore, it is expected that wireless power supply will be put into practical use, which can reduce wiring costs, design and mounting man-hours, and minimize sensors. Our technology can supply power not only to the office environment but also to the back of the office, and we aim to develop our business in various fields such as power supply to water leakage sensors.
The figure below is an image of installing a transmitter for task ambient air conditioning. The transmitter and receiver were installed as follows. The receiver was installed on a desk with a height of 0. This is because when implementing a building management system using WPT, the ceiling height of office buildings is often 2. The amount of charge to the batteries of receiver 1 and receiver 2 is described.
Receiver 1: The charging current was about 0. Therefore, charging capacity: 2. Receiver 2: It was confirmed that the charging current increased by about 0. Average charging power: 2. We were able to confirm the maximum charge amount of 2mW or more. It was also confirmed that the decrease in voltage value stopped in about 5 minutes. From this, it can be said that the power consumption of the environmental sensor and the power supply amount of wireless power supply are balanced there is supply and demand.
Sufficient charge was secured for the battery 2. We are making multiple efforts toward the realization of task ambient air conditioning.
Assuming use in an actual office environment 1. Confirmation of practicality of wireless power supply in a real environment 2. We verified it in order with the simulation in the office environment. The contents are reported in the Resi-Tech 2nd Batch of Open Network lab, so please see the video below. In the next demonstration experiment, we will connect the sensor and the air conditioning system in the actual office and verify whether task ambient air conditioning can be realized by wireless power supply.
Ref document number : Country of ref document : JP. There are various types of antennas, but there is a patch antenna as an antenna that realizes single-sided directivity. For example, Patent Document 1 discloses a structural example of a patch antenna.
In a patch antenna with this structure, the dielectric constant and dielectric positive contact degree of electrical energy loss in the capacitor of the dielectric material such as the printed circuit board that supports the conductor part such as the ground conductor part and the patch conductor part are the radiation of the patch antenna.
Determine efficiency. For example, when the dielectric constant is large, the wavelength of the current flowing through the patch conductor portion is shortened, the current density is increased, and the conductor loss is increased. Further, if the dielectric loss tangent is large, the dielectric loss of the electromagnetic wave transmitted through the dielectric increases. Further, in order to use the patch antenna for a wireless communication system particularly a mobile communication system , a wide directional patch antenna is required.
And, the first dielectric layer provides an antenna device including a dielectric substrate. Issues, configurations and effects other than the above will be clarified by the following description of the embodiments.
As shown in FIG. The antenna device having the above configuration is easy to manufacture, has high gain, and has wide directivity, but since it has only one patch electrode , it receives a signal with an electromagnetic wave of a single frequency. It should be noted that the examples of the present disclosure are not limited to the examples described later, and various modifications can be made within the scope of the technical idea.
In addition, the corresponding parts of the drawings used in the description of each embodiment described later are designated by the same reference numerals, and duplicate description will be omitted.
The dielectric layer may also refer to a layer in which a dielectric substrate and an air layer are laminated. The dielectric layer may include a dielectric other than the dielectric substrate and the air layer.
The antenna device 1 according to the present embodiment includes a first dielectric substrate 11, a second dielectric substrate 12, a third dielectric substrate 13, a fourth dielectric substrate 14, a first patch electrode 15, and a second patch electrode A ground electrode 17 is provided.
Each component included in the antenna device 1 is arranged substantially in parallel, for example. Further, an air layer G is provided between the third dielectric substrate 13 and the ground electrode Hereinafter, each component included in the antenna device 1 will be described with reference to FIG.
The first dielectric substrate 11 is a square plate-like member having a thickness of t 1 and having an upper surface 11a and a lower surface 11b. The second dielectric substrate 12 is a square plate-like member having a thickness of t 2 and having an upper surface 12a and a lower surface 12b. The third dielectric substrate 13 is a square plate-like member having a thickness of t 3 and having an upper surface 13a and a lower surface 13b. The fourth dielectric substrate 14 is a square plate-shaped member having an upper surface 14a and a lower surface 14b.
A printed circuit board made of glass epoxy resin is preferably used for each substrate, but a dielectric such as an acrylic plate, ABS resin formed by polymerizing acrylonitrile, butadiene, and styrene , and a glass plate can be used. You may use it. In other words, the dimensions L S of each substrate are sufficiently wider than the dimensions of the first patch electrode 15 and the second patch electrode Ideally, the size L S of each substrate should be at least twice the size of the patch electrode.
However, if the miniaturization of the antenna device 1 is emphasized, the size may be further reduced. The size L S of each substrate is preferably about to mm, for example, when the operating frequency is about 1 GHz.
In this case, the dimensions of the fourth dielectric substrate 14 on which the ground electrode 17 is arranged are set with twice the dimensions of the patch electrodes as a guide according to the above example, and the first dielectric substrate 11, the second dielectric substrate 12, and the second dielectric substrate 12 are set.
The 3 dielectric substrate 13 may be smaller than the size as long as the first patch electrode 15 and the second patch electrode 16 can be arranged. The second patch electrode 16 is composed of a circular thin plate-shaped member or a thin film having an upper surface 16a and a lower surface 16b.
The outer diameters L 1 and L 2 of the first patch electrode 15 and the second patch electrode 16 are determined by the carrier frequency of the wireless system, as in the case of a normal patch antenna. However, since the antenna device 1 is subject to wavelength shortening due to the influence of the dielectric constant of the dielectric substrate that supports each electrode, the actual size of the patch electrode is several percent larger than the above-mentioned size based on the wavelength in free space.
In other words, the wavelength of the electromagnetic wave received or emitted by the first patch electrode 15 is shorter than the wavelength of the electromagnetic wave received or emitted by the second patch electrode Alternatively, the frequency of the electromagnetic wave received or emitted by the first patch electrode 15 is higher than the frequency of the electromagnetic wave received or emitted by the second patch electrode The shapes of the first patch electrode 15 and the second patch electrode 16 may be, for example, a regular n-sided polygon n is 4 or more.
The first patch electrode 15 and the second patch electrode 16 are formed as a plate-shaped member or a thin film made of copper, aluminum, gold or the like. The ground electrode 17 is formed as a plate-shaped member such as copper, aluminum, or gold, or a thin film. The ground electrode 17 is formed on substantially the entire surface of the upper surface 14a of the fourth dielectric substrate Therefore, the size of the ground electrode 17 in a plan view is larger than the size of the first patch electrode 15 and the second patch electrode 16 in a plan view.
The air layer G has a thickness of d g , and is provided, for example, by providing poles at four corners of the antenna device to separate the third dielectric substrate 13 and the ground electrode The effective permittivity of the dielectric layer can be adjusted by providing the air layer G. It is sandwiched between 12 and The lower surface 12b of the second dielectric substrate 12 and the upper surface 13a of the third dielectric substrate 13 are in contact with each other, and the second patch electrode 16 is sandwiched between the second dielectric substrate 12 and the third dielectric substrate The ground electrode 17 is arranged so as to cover the upper surface 14a of the fourth dielectric substrate.
In this embodiment, the ground electrode 17 is in contact with the upper surface 14a of the fourth dielectric substrate, but the ground electrode 17 may be separated from the upper surface 14a of the fourth dielectric substrate.
Is the average value of. The upper equation is a condition for the antenna device 1 to operate as a micro-antenna, and the lower equation is a condition for satisfying a design requirement. As the value of the above parameter, for example, a value corresponding to the applied wireless communication system is used.
In the case of FIG. By arranging the poles 8 and the screws 9 at the four corners of each substrate as shown in FIG. The substrate can be supported by suppressing the deterioration of the characteristics. The pole 8 and the screw 9 are preferably made of resin, but may be made of metal if strength is required.
It may be arranged. For example, the input impedance of the central portion of the first patch electrode 15 and the second patch electrode 16 in the plane direction is 0, and theoretically, even if a conductor or a dielectric is touched, the influence on the antenna characteristics is considered to be small.
It is possible to arrange the pole 8 and the screw 9. In particular, under harsh usage conditions such as industrial applications, it is assumed that a large amount of mechanical impact will be applied, and a structure that enhances such strength may be required.
Further, although four poles 8 are provided in FIG. In order to actually operate the antenna device 1, it is necessary to electrically insulate the first patch electrode 15, the second patch electrode 16, and the ground electrode 17 and supply power to the first patch electrode 15 and the second patch electrode The connection method of the power feeding lead wire required for actually using the antenna device 1 and the leading wire required for grounding will be described below.
A through hole 11c that penetrates the land portion 11d is provided. The through hole 11c is covered with a conductive through hole wiring, and the first patch electrode 15 and the second patch electrode 16 are electrically connected to a signal line 2 see FIG. The signal line 2 can be fixed by being soldered at the first signal land portion 11d.
The through hole 11c is provided at a position deviated from the central portion of the first dielectric substrate A through hole 14c and a plurality of via hole wirings 14e are formed in the ground portion 14d.
The via hole wiring 14e is formed so as to surround the through hole 14c. The ground electrode 17 is electrically connected to a lead wire for grounding via the ground portion 14d. Similar to the through holes 11c provided on the first dielectric substrate 11, the through holes 14c are provided at positions deviated from the central portion of the fourth dielectric substrate That is, the ground portion 14d and the second signal land portion 14g are separated by a gap portion 14f.
Therefore, the ground portion 14d and the second signal land portion 14g are not electrically connected. In other words, the ground portion 14d and the second signal land portion 14g are insulated from each other. The through hole 14c is provided in the land portion 14g for the second signal. The antenna device 1 is designed so that when the dielectric substrates and the electrodes face each other, the positions of the through holes are matched to form one through hole.
The signal line 2 described above is inserted into the through hole, and the first patch electrode 15 and the second patch electrode 16 are electrically connected to the signal line 2 to supply power. By doing so, it is possible to prevent the signal line 2 and the ground electrode 17 from coming into contact with each other and causing a short circuit.
The feeding point 3 is selected at a position where the high frequency signal enters most efficiently. In the case of this embodiment, the feeding point 3 is selected at a position slightly deviated from the center of the first patch electrode 15 and the second patch electrode 16 as described above.
The insides of the through holes 11c and 12c provided in the first dielectric substrate 11 and the second dielectric substrate 12 are covered with a conductor, and the signal line 2 is electrically connected to the first patch electrode 15 and the second patch electrode It is connected to the. It is insulated. That is, the first patch electrode 15 and the second patch electrode 16 are electrically connected to the second signal land portion 14g via the signal line 2, and are electrically insulated from the ground electrode Further, the ground electrode 17 is electrically connected to the ground land portion 14d via a plurality of via hole wirings 14e, and is electrically insulated from the second signal land portion 14g.
It can be soldered to the 14b side outside of the antenna device 1 , and the assembly work can be easily performed. A microstrip line 14h is formed in the land portion 14g for the second signal, and can be connected to, for example, an electronic circuit 5 including a low noise amplifier circuit.
It is U-shaped so as to surround the land portion 14g. Since the ground land portion 14d and the second signal land portion 14g have the above-mentioned shape, the microstrip line 14h can transmit a high frequency signal. Is connected to the signal terminal input terminal 5a2.
Since the ground electrode 17 is formed on the upper surface 14a of the fourth dielectric substrate 14, the electronic circuit 5 arranged on the lower surface 14b is electromagnetically separated from the antenna portion. The electronic circuit 5 includes an antenna terminal 5a, an output terminal 5b, a low noise amplifier LNA 5c, and a bandpass filter BPF connected to the electrode 6 the part of FIG.
The output terminal 5b is connected to a demodulation IC7 demodulator or the like, which is an external receiving circuit. The antenna device 1 according to the first embodiment has a configuration in which the upper surface 15a of the first patch electrode 15 is in contact with the first dielectric substrate In this way, the antenna device 1 can adjust the wavelength shortening rate of the current flowing through the first patch electrode 15 to widen the directivity.
Further, since the antenna device 1 can reduce the area of the first patch electrode 15, the current flowing through the first patch electrode 15 acts in a direction of weakening the beamforming effect of the electromagnetic field radiated, and the directivity can be expanded.
In particular, in a mobile communication system, the positional relationship direction between the transmitter and the receiver cannot be specified in many cases, so the wide-directional antenna device 1 is suitable for use in the mobile communication system. It can be fixed to the substrate 11 and the fourth dielectric substrate That is, the soldering work can be performed on the outer surfaces of the two printed circuit boards, and the soldering work can be easily performed. This facilitates the assembly work of the antenna device 1 and contributes to the reduction of the manufacturing cost.
By doing so, the antenna device 1 can obtain high gain antenna performance. In this way, the antenna device 1 has a large operating gain. Also in the case of FIG.