WO2012066953A1 - 通信媒体 - Google Patents
通信媒体 Download PDFInfo
- Publication number
- WO2012066953A1 WO2012066953A1 PCT/JP2011/075561 JP2011075561W WO2012066953A1 WO 2012066953 A1 WO2012066953 A1 WO 2012066953A1 JP 2011075561 W JP2011075561 W JP 2011075561W WO 2012066953 A1 WO2012066953 A1 WO 2012066953A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sheet
- conductor
- communication
- impedance
- communication medium
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/526—Electromagnetic shields
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
Definitions
- the present invention relates to a communication medium.
- 2D communication has been proposed in which communication and power supply are performed using a sheet antenna.
- this sheet-like antenna for example, as in the signal transmission systems described in Patent Documents 1 and 2, two sheet conductor portions are arranged facing each other, and a dielectric is filled between them. A portion of the sheet conductor portion excluding the edge forms a lattice made of a conductor.
- Communication and power supply are realized by joining an exclusive coupler and transmitting and receiving electromagnetic waves. The characteristic of the electromagnetic wave propagating through the sheet conductor is characterized by the sheet impedance.
- An example of an object of the present invention is to provide a communication medium that can suppress leakage of electromagnetic waves.
- a communication medium includes a first sheet conductor portion and a second sheet conductor disposed so as to face the first sheet conductor portion. And a conductor portion surrounding the end portion of the first sheet conductor portion and the end portion of the second sheet conductor portion.
- the second sheet conductor portion is provided between a shield portion having no opening, a communication power supply portion having an opening, and between the shield portion and the communication power supply portion, and an impedance thereof is set between the shield portion and the communication power supply.
- a matching line section that matches the power feeding section is provided.
- the conductor portion surrounds an end portion of the shield portion.
- leakage of electromagnetic waves can be suppressed.
- FIG. 1A is a schematic diagram showing a communication medium 1 according to the present embodiment.
- the upper part of FIG. 1A is a conceptual diagram showing the values of sheet impedance in the second conductor sheet 16 in shades (details of this conceptual diagram will be described later).
- the lower part of FIG. 1A is a cross-sectional view showing the communication medium 1 according to the present embodiment.
- the communication medium 1 includes a first conductor sheet (sheet conductor portion) 11, a metal wall (conductor portion) 13, a second conductor sheet (sheet conductor portion) 16, and a dielectric 17.
- the second conductor sheet 16 includes a shield surface 12, a variable mesh portion (matching line portion) 14, and a communication / power supply surface (communication power supply portion) 15.
- the shield surface 12, the variable mesh portion 14, and the communication / power supply surface 15 are arranged on the same plane.
- the first conductor sheet 11 and the second conductor sheet are disposed to face each other in parallel.
- the 1st conductor sheet 11 consists of metal layers, for example, and does not have openings, such as a lattice.
- the shield surface 12 is made of, for example, a metal layer and has no opening.
- the material of the shield surface 12 may be the same conductor as the first conductor sheet 11.
- the metal wall 13 is a conductor (metal) that seals the entire end of the first conductor sheet 11 and the second conductor sheet 16 (shield surface 12) (only the left side of the end is shown in the lower part of FIG. 1A).
- a dielectric 17 is filled between the two conductor sheets 11 and 16.
- the dielectric 17 may be, for example, a gas (for example, air) or a foamable synthetic resin containing a gas.
- the metal wall 13 may have a via structure.
- the metal wall 13 may be the same conductor as the material of the first conductor sheet 11 and the shield surface 12.
- the communication / power supply surface 15 is made of a conductor formed in a lattice shape (having openings periodically in space).
- the communication / power supply surface 15 is disposed at a position away from the shield surface 12 in the second conductor sheet 16 (on the right side in the example in the lower part of FIG. 1A).
- a coupler (coupler) is bonded to the communication / power supply surface 15.
- the communication / power supply surface 15 is supplied with electromagnetic waves to be transmitted from the outside of the communication medium 1 via a coupler.
- the lattice spacing and the conductor width of the conductor forming the communication / feeding surface 15 are constant. Therefore, the sheet impedance of the communication / power supply surface 15 is constant.
- the sheet impedance of the communication / power supply surface 15 is higher than the sheet impedance of the shield surface 12 having no opening.
- the variable mesh portion 14 is a conductor formed in a lattice shape disposed between the shield surface 12 and the communication / power supply surface 15.
- the conductor width of the conductors constituting the variable mesh portion 14 is changed so that the sheet impedance of the variable mesh portion 14 changes continuously in space, for example, exponentially with respect to the distance from the portion in contact with the shield surface 12. Designed.
- the sheet impedance of the portion in contact with the shield surface 12 of the variable mesh portion 14 is equal to the sheet impedance of the shield surface 12.
- the sheet impedance of the portion in contact with the communication / power supply surface 15 of the variable mesh portion 14 is equal to the sheet impedance of the communication / power supply surface 15. The relationship between sheet impedance and conductor width will be described later.
- the configuration for changing the sheet impedance is not limited to changing the conductor width.
- the lattice spacing of the conductors constituting the variable mesh portion 14, or the conductor width and the lattice spacing may be changed.
- the upper part of FIG. 1A is a conceptual diagram showing that the darker the color, the lower the sheet impedance of the second conductor sheet 16. That is, the upper part of FIG. 1 shows that the sheet impedance of the second conductor sheet 16 is lower as it is closer to the shield surface 12, and the sheet impedance of the second conductor sheet 16 is higher as it is closer to the communication / feeding surface 15. .
- the distance from the portion in contact with the shield surface 12 of the second conductor sheet 16 to the portion in contact with the communication / power feeding surface 15 is referred to as a variable region width L.
- the variable region width L is set to a half (half wavelength) of the effective wavelength ⁇ of the electromagnetic wave propagating between the two conductor sheets 11 and 16 when the impedance is designed to change exponentially with respect to the distance.
- the sheet impedance between the shield surface 12 and the communication / power supply surface 15 is matched, and the variable mesh portion 14 acts as a matching line between the shield surface 12 and the communication / power supply surface 15. That is, the electromagnetic wave propagates between the shield surface 12 and the communication / power supply surface 15 without being reflected.
- FIG. 1B is an example of a plan view of the second conductor sheet 16. As shown in FIG. 1B, the shield surface 12 is not provided with an opening.
- the variable mesh portion 14 is provided with an opening 14A.
- the communication / power supply surface 15 is provided with an opening 15A.
- the reflection coefficient ⁇ is given by the following equation (1).
- x is the x coordinate value.
- the value of the x coordinate of the boundary point between the variable mesh unit 14 and the communication / power feeding surface 15 is defined as zero.
- the direction from the boundary point toward the shield surface 12 is defined as the positive direction of the x-axis of the x coordinate.
- the variable region width L indicates the value of the x coordinate at the boundary point between the variable mesh portion 14 and the shield surface 12, that is, the width of the variable mesh portion 14 (variable region width).
- ⁇ is a phase constant.
- the sheet impedance is the ratio between the electric field and magnetic field of electromagnetic waves propagating in the two conductor sheets.
- the sheet impedance Z is given by the following equation (2).
- h is the thickness of the insulating layer sandwiched between the sheets
- ⁇ r is the relative permittivity
- ⁇ 0 is the magnetic permeability
- c is the speed of light in the insulating layer
- c 0 is the speed of light in vacuum
- ⁇ is the angular frequency. is there.
- the phase constant ⁇ is given by the following formula (3), where the effective wavelength is ⁇ .
- the sheet impedance generally varies depending on the ratio of the size of the conductor portion region. For example, when the conductor portion has a lattice shape (mesh structure) as shown in FIG.
- the sheet impedance can be determined by adjusting the width w (hereinafter referred to as the conductor width) w of the conductor portion extending in the waveguide direction x.
- FIG. 2 is a schematic diagram illustrating a configuration example of a conductor portion in the conductor sheet.
- FIG. 2 shows the conductor part C, the insulator part I, and the waveguide direction G of the conductor sheet 11.
- the width v of the portion extending in the y direction of the conductor portion C is 1 mm.
- FIG. 3 is a diagram illustrating an example of the relationship between the conductor width and the impedance.
- the horizontal axis represents the conductor width w
- the vertical axis represents the sheet impedance Z (w).
- FIG. 3 shows that the sheet impedance Z (w) rapidly decreases as the conductor width w increases.
- the variable region width L of the variable mesh portion 14 is set to a half length of the effective wavelength ⁇ . Further, the conductor width w of the variable mesh portion 14 changes according to the relationship shown in FIG. 3 so that the sheet impedance Z (w) changes exponentially in the waveguide direction G.
- FIG. 4 shows the relationship between the coordinate value x, the conductor width w (x), and the sheet impedance Z (x) at this time.
- FIG. 4 is a diagram illustrating an example of the relationship between the conductor width w (x) and the sheet impedance Z (x) and the coordinate value x.
- the horizontal axis in FIG. 4 is the coordinate value x.
- the vertical axis in FIG. 4 is the conductor width w (x) or the sheet impedance Z (x).
- the sheet impedance Z (x) is indicated by a diamond mark and the conductor width w (x) is indicated by a circle mark. According to FIG. 4, the sheet impedance Z (x) decreases exponentially as x increases. On the other hand, the conductor width w (x) monotonously increases as x increases. In this manner, the sheet impedance in the variable mesh portion 14 can be quantitatively determined by changing the conductor width w (x).
- the sheet impedance is changed by changing the conductor width w (x) of the variable mesh portion 14
- the sheet impedance may be changed by continuously changing the space between the lattices, or the conductor width and the space between the lattices.
- FIG. 5 is a diagram showing a result of verifying an example of the leakage characteristic of electromagnetic waves, that is, frequency characteristics of radiation efficiency, using an electromagnetic field simulator.
- shaft of FIG. 5 shows radiation efficiency (Radiation efficiency).
- the horizontal axis of FIG. 5 shows the frequency (Frequency) of electromagnetic waves.
- a broken line R (a line marked with a note “reference”) directly connects the shield surface 12 and the communication / feeding surface 15 except the metal wall 13 and the variable mesh portion 14 from the configuration of the communication medium 1 of the present embodiment.
- the radiation efficiency about the communication medium (henceforth a reference medium) comprised by contacting is shown.
- a solid line S (a line marked with “short”) is a communication medium configured by directly connecting the shield surface 12 and the communication / power supply surface 15 except the variable mesh portion 14 from the communication medium 1 of the present embodiment.
- the radiation efficiency for (hereinafter referred to as a metal walled medium) is shown.
- An alternate long and short dash line K (a line marked with “kahen-taper”) indicates the radiation efficiency of the communication medium 1 of the present embodiment.
- each communication medium is square and each side is 40 cm in length.
- the shield surface 12 occupies a width of 8 mm from the end.
- the radiation efficiency when the communication medium 1 is used that is, the amount of electromagnetic wave leakage, is the smallest at least between the frequencies of 2 GHz and 4 GHz.
- the radiation efficiency when the reference medium is used takes a value of around ⁇ 10 dB regardless of the frequency.
- the reference medium leaks most electromagnetic waves.
- the metal walled medium the radiation efficiency increases from about ⁇ 40 dB to ⁇ 20 dB as the frequency increases from 2 GHz to 4 GHz.
- the metal walled medium leaks electromagnetic waves second most.
- the radiation efficiency when using the communication medium 1 according to the present embodiment increases from about ⁇ 50 dB to ⁇ 30 dB as the frequency increases from 2 GHz to 4 GHz.
- the second conductor sheet 16 includes the shield surface 12 having no opening, the communication / power supply surface 15 having the opening, the shield surface 12, the communication / power supply surface 15, And a matching line portion 14 whose impedance matches the shield surface 12 and the communication / feeding surface 15.
- the communication medium 1 includes a metal wall 13 that surrounds the end portion of the first conductor sheet 11 and the end portion of the shield surface 12 (that is, a portion of the second conductor sheet 16 that is a part of the shield surface 12).
- FIG. 6 is a schematic diagram showing the configuration of the communication medium 2 according to the second embodiment of the present invention.
- the upper part of FIG. 6 is a conceptual diagram showing the sheet impedance values in the second conductor sheet 16 in shades.
- the lower part of FIG. 6 is a sectional view showing the communication medium 2 according to the present embodiment.
- the communication medium 2 has the same arrangement of components as the communication medium 1. However, instead of the variable mesh portion 14 in the communication medium 1, the communication medium 2 is different in that it includes a matching line portion 18 that is a quarter wavelength line.
- the width of the matching line portion 18 in the x direction (horizontal left direction in the lower part of FIG.
- the sheet impedance Z m of the matching line 18 is 1 ⁇ 4 (1/4 wavelength) of the effective wavelength ⁇ .
- the impedance of the system composed of the matching line portion 18 and the shield surface 12 as viewed from the communication / feeding surface 15 side is Z m 2 / Z s .
- This impedance Z m 2 / Z s matches the sheet impedance Z t of the communication / feed surface 15 from the equation (4). Since the matching line portion 18 has such a width and impedance in the x direction, leakage of electromagnetic waves is suppressed even when the matching line portion 18 is a narrow region of 1 ⁇ 4 of the effective wavelength ⁇ . By enlarging the area of the communication / power supply surface 15, it is allowed to supply a large amount of power.
- the communication medium 2 suppresses leakage of electromagnetic waves and realizes efficient communication and power feeding.
- the matching line section is based on the formula (1) that defines the relationship between the reflection coefficient ⁇ and the sheet impedance. Eighteen characteristics (eg, Chebyshev taper) can be defined quantitatively.
- the communication medium 2 According to the communication medium 2 according to the present embodiment, leakage of the electromagnetic wave from the end portion is suppressed even when the electromagnetic wave is supplied. Therefore, even when a large amount of electric power is transmitted, even when a coupler is installed on the end of the communication medium 2 or on the communication / feeding surface 15, leakage of electromagnetic waves from around the coupler is suppressed. Thereby, safe and reliable communication or power transmission can be realized.
- the present invention can be applied to communication media. According to this communication medium, leakage of electromagnetic waves can be suppressed.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Near-Field Transmission Systems (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
以下、図面を参照しながら本発明の実施形態について説明する。
図1Aは、本実施形態に係る通信媒体1を示す概略図である。図1Aの上部は、第2の導体シート16におけるシートインピーダンスの値を濃淡で示す概念図である(この概念図の詳細については後述する)。図1Aの下部は、本実施形態に係る通信媒体1を示す断面図である。通信媒体1は、第1の導体シート(シート導体部)11と、金属壁(導体部)13と、第2の導体シート(シート導体部)16と、誘電体17とを含む。第2の導体シート16は、シールド面12と、可変メッシュ部(整合線路部)14と、通信・給電面(通信給電部)15とを含む。シールド面12と可変メッシュ部14と通信・給電面15とは、同一平面上に配置される。第1の導体シート11と第2の導体シートとは互いに平行に対向して配置される。
シールド面12は、第1の導体シート11と同様に、例えば金属層からなり、開口部を有しない。シールド面12の材質は、第1の導体シート11と同一の導体であってもよい。
金属壁13は、第1の導体シート11及び第2の導体シート16(シールド面12)の端部(図1Aの下部の図では端部の左側部分のみ図示)全面を封止する導体(金属)からなる。
両導体シート11,16の間に誘電体17が充填される。誘電体17は、例えば、気体(例えば、空気)または気体を含む発泡性合成樹脂であってもよい。導体シート11,16の端部における電界強度が最小となることにより電磁波の漏洩が抑制される。通信媒体1では、導体シート16の端部にシールド面12及び金属壁13が設けられている。この構成により、導体シート16の端部の周辺における電界強度が最小化される。そのため、両導体シート11,16内を伝搬する電磁波が金属壁13により反射する場合でも、電磁波の漏洩が抑制される。
金属壁13は、ビア構造であってもよい。金属壁13は、第1の導体シート11及びシールド面12の材質と同一の導体であってもよい。
通信・給電面15のシートインピーダンスは、開口部を有しないシールド面12のシートインピーダンスよりも高くなる。
図1Bは、第2の導体シート16の平面図の一例である。図1Bに示すように、シールド面12には開口部が設けられていない。可変メッシュ部14には、開口部14Aが設けられている。通信・給電面15には、開口部15Aが設けられている。
図2は、導体シートにおける導体部分の構成例を示す概略図である。図2は、導体シート11の導体部C、絶縁体部I、導波方向Gを示している。導体部Cのy方向に延びる部分の幅vは、1mmである。
図3では、横軸が導体幅w、縦軸がシートインピーダンスZ(w)である。図3は、導体幅wが大きくなるに従い、シートインピーダンスZ(w)が急激に低下することを示す。
このような構成にすることで、実質的にインピーダンスが不連続な部分がなくなり通信媒体1からの電磁波の漏洩が抑えられる。
以下、図面を参照しながら本発明の第2の実施形態について説明する。
図6は、本発明の第2の実施形態に係る通信媒体2の構成を示す概略図である。図6の上部は、第2の導体シート16におけるシートインピーダンスの値を濃淡で示す概念図である。図6の下部は、本実施形態に係る通信媒体2を示す断面図である。通信媒体2は、通信媒体1と構成部材の配置は同様である。但し、通信媒体1における可変メッシュ部14の代わりに、通信媒体2は1/4波長線路である整合線路部18を有する点が異なる。
整合線路部18のx方向(図6の下部の水平左方向)の幅は、実効波長λの1/4(1/4波長)である。また、整合線路部18のシートインピーダンスZmは、次式(4)に示されるように通信・給電面15のシートインピーダンスZtとシールド面12のシートインピーダンスZsの相乗平均、即ちこれらの積の根である。図6の上部の図に示されるように、整合線路部18のシートインピーダンスZmの値は一定値である。
特に、電磁波の漏洩が問題となる周波数もしくは波長が既知である場合(例えば、大電力を伝送する場合)には、通信媒体2は、電磁波の漏洩を抑制し、効率よい通信、給電を実現する。
また、第1の実施形態と同様に導体幅や格子間隔のような各種変数とシートインピーダンスの関係に基づいて、反射係数Γとシートインピーダンスとの関係を定める式(1)に基づいて整合線路部18の特性(例えば、チェビシェフテーパ)を定量的に定めることができる。
11 第1の導体シート
12 シールド面
13 金属壁
14 可変メッシュ部
15 通信・給電面
16 第2の導体シート
17 誘電体
18 整合線路部
Claims (2)
- 第1のシート導体部と、
前記第1のシート導体部に対向して配置した第2のシート導体部と、
前記第1のシート導体部の端部及び第2のシート導体部の端部を囲む導体部とを備える通信媒体であって、
前記第2のシート導体部は、
開口部を有しないシールド部、
開口部を有する通信給電部、および
前記シールド部と前記通信給電部との間に設けられ、そのインピーダンスが前記シールド部及び前記通信給電部に整合する整合線路部を備え、
前記導体部は、前記シールド部の端部を囲む
通信媒体。 - 前記整合線路部は、
1/4波長線路である請求項1に記載の通信媒体。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/884,113 US9153866B2 (en) | 2010-11-19 | 2011-11-07 | Communication medium |
JP2012544179A JP5842823B2 (ja) | 2010-11-19 | 2011-11-07 | 通信媒体 |
CN2011800549564A CN103210596A (zh) | 2010-11-19 | 2011-11-07 | 通信介质 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010-258727 | 2010-11-19 | ||
JP2010258727 | 2010-11-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012066953A1 true WO2012066953A1 (ja) | 2012-05-24 |
Family
ID=46083888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/075561 WO2012066953A1 (ja) | 2010-11-19 | 2011-11-07 | 通信媒体 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9153866B2 (ja) |
JP (1) | JP5842823B2 (ja) |
CN (1) | CN103210596A (ja) |
WO (1) | WO2012066953A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018093334A (ja) * | 2016-12-01 | 2018-06-14 | テスラシート株式会社 | 2次元通信シートおよびそれを備えた2次元通信システム |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008053337A (ja) * | 2006-08-23 | 2008-03-06 | Pentax Corp | 通信用基板 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2003195A (en) * | 1994-06-21 | 1996-01-04 | Boc Group, Inc., The | Improved power distribution for multiple electrode plasma systems using quarter wavelength transmission lines |
CN1166031C (zh) * | 2001-02-13 | 2004-09-08 | 财团法人工业技术研究院 | 片状天线 |
JP4650906B2 (ja) * | 2005-09-12 | 2011-03-16 | 株式会社セルクロス | 信号伝達装置、インターフェース装置、ならびに、通信システム |
JP4538594B2 (ja) | 2005-09-12 | 2010-09-08 | 株式会社セルクロス | 信号伝達システム |
JP2007281678A (ja) | 2006-04-04 | 2007-10-25 | Serukurosu:Kk | 信号伝達システム |
-
2011
- 2011-11-07 US US13/884,113 patent/US9153866B2/en active Active
- 2011-11-07 WO PCT/JP2011/075561 patent/WO2012066953A1/ja active Application Filing
- 2011-11-07 CN CN2011800549564A patent/CN103210596A/zh active Pending
- 2011-11-07 JP JP2012544179A patent/JP5842823B2/ja active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008053337A (ja) * | 2006-08-23 | 2008-03-06 | Pentax Corp | 通信用基板 |
Non-Patent Citations (3)
Title |
---|
"Aratana Tsushin Baitai o Riyo shita Surface Tsushin Gijutsu no Kenkyu Kaihatsu (137)", SEIKA IMAGE-ZU, HEISEI 21 NENDO KENKYU SEIKA GAIYO, 19 May 2010 (2010-05-19), Retrieved from the Internet <URL:http://www2.nict.go.jp/q/q265/s802/seika/h21/seika/137/137gaiyoug.pdf> [retrieved on 20111125] * |
HIROSHI FUKUDA ET AL.: "Reducing radiated emissions from ends of a Two-Dimensional Signal Transmission Sheet", THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS SOGO TAIKAI KOEN RONBUNSHU, 2 March 2010 (2010-03-02), pages 140 * |
NAOKI KOBAYASHI ET AL.: "Challenging EMC problems on two-dimensional communication systems", SEVENTH INTERNATIONAL CONFERENCE ON NETWORKED SENSING SYSTEMS, 15 June 2010 (2010-06-15), pages 130 - 137 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018093334A (ja) * | 2016-12-01 | 2018-06-14 | テスラシート株式会社 | 2次元通信シートおよびそれを備えた2次元通信システム |
Also Published As
Publication number | Publication date |
---|---|
US20130222203A1 (en) | 2013-08-29 |
JP5842823B2 (ja) | 2016-01-13 |
CN103210596A (zh) | 2013-07-17 |
US9153866B2 (en) | 2015-10-06 |
JPWO2012066953A1 (ja) | 2014-05-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9070962B2 (en) | Surface communication device | |
JP4892498B2 (ja) | マイクロストリップアンテナ | |
KR101238434B1 (ko) | 전파렌즈 및 이의 제조방법 | |
EP3178131B1 (en) | Folded radiation slots for short wall waveguide radiation | |
EP2843757B1 (en) | Suppressing modes in an antenna feed including a coaxial waveguide | |
JP2007166115A (ja) | アンテナ装置 | |
US20100117923A1 (en) | Antenna Assembly | |
CN107978866B (zh) | 表面行进波的信号反射的相位偏移 | |
JP6235424B2 (ja) | アンテナ装置 | |
JP5842823B2 (ja) | 通信媒体 | |
US10930989B2 (en) | Structural body, laminated structure of structural body, and antenna structure | |
JP2010074790A (ja) | 通信体及びカプラ | |
JP5620534B2 (ja) | 移相器及びアンテナシステム | |
WO2010131612A1 (ja) | サーフェイス通信装置 | |
JP5041416B2 (ja) | アンテナ装置 | |
JP2017216587A (ja) | 誘電体基板及びアンテナ装置 | |
US8803629B2 (en) | Electromagnetic coupler and information communication device including same | |
JP4794616B2 (ja) | 導波管・ストリップ線路変換器 | |
JP2012028968A (ja) | アンテナ装置 | |
EP3584887A1 (en) | Dielectric-based leaky-wave structure | |
JP5981466B2 (ja) | 平面伝送線路導波管変換器 | |
JP2008148149A (ja) | アンテナ装置 | |
JP6534911B2 (ja) | 導波管・マイクロストリップ線路変換器 | |
JP2015188144A (ja) | アレイ導波管およびその製造方法 | |
JP6224104B2 (ja) | 誘電面素 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11842086 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2012544179 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13884113 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 11842086 Country of ref document: EP Kind code of ref document: A1 |