WO2009031700A1 - Dispositif d'antenne - Google Patents

Dispositif d'antenne Download PDF

Info

Publication number
WO2009031700A1
WO2009031700A1 PCT/JP2008/066369 JP2008066369W WO2009031700A1 WO 2009031700 A1 WO2009031700 A1 WO 2009031700A1 JP 2008066369 W JP2008066369 W JP 2008066369W WO 2009031700 A1 WO2009031700 A1 WO 2009031700A1
Authority
WO
WIPO (PCT)
Prior art keywords
conductor plate
plate
conductor
loop antenna
antenna
Prior art date
Application number
PCT/JP2008/066369
Other languages
English (en)
Japanese (ja)
Inventor
Takayuki Sone
Shinji Tanaka
Original Assignee
Yokowo Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yokowo Co., Ltd. filed Critical Yokowo Co., Ltd.
Publication of WO2009031700A1 publication Critical patent/WO2009031700A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
    • H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/005—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with variable reactance for tuning the antenna
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0442—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular tuning means

Definitions

  • the dielectric loss R d of the plate loop antenna 1 is the dielectric capacitance between the side conductor plate 1 3 and the capacitive conductor plate 14 and the capacitance of the capacitor formed by the side conductor plate 1 3 and the capacitive conductor plate 14. If the tangent is ta ⁇ ⁇ , it is expressed by Equation 3.
  • the feeder line 15 for feeding the plate loop antenna 1 is connected to the upper conductor plate 10 through the hole 16 provided in the lower conductor plate 11 as shown in the diagram (a) of FIG. Connected.
  • the feeder line 15 is offset in the direction of the connecting conductor plate 12—side conductor plate 13 so that the antenna system and the feeder system can be matched.
  • the feeder line 15 may be arranged anywhere in the width direction of the conductor plate 10. When power is supplied in this way, it is not necessary to insert a matching circuit with lumped constant elements, so that the loss can be suppressed accordingly.
  • FIG. 4 is a graph showing the relationship between the resonance frequency of the plate-like loop antenna 1 and the radiation efficiency ⁇ , with the element thickness t being changed. The higher the frequency, the less the influence of the element thickness t on 3 ⁇ 4lt efficiency 7].
  • FIG. 5 shows a configuration in which an element having a connection conductor plate 12, an upper conductor plate 10, and a side conductor plate 13 is provided on the substrate 19.
  • a dielectric substrate is used as the substrate.
  • the substrate 19 is provided with a lower conductor 17 that is a conductor corresponding to the lower conductor plate 11.
  • the lower conductor 17 is formed by applying a conductive member to the conductor plate or the substrate 19.
  • the lower conductor 17 is connected to the connecting conductor plate 12.
  • the board 1 9 and the lower conductor 17 are provided with holes 16, through which the feeder lines 15 are connected to the upper conductor plate 10. Is done.
  • FIG. 6 differs in the length of the force side conductor plate 21 and the position of the capacitive conductor plate 20 which are similar to the plate loop antenna of FIG.
  • the side conductor plate 21 is provided so as to penetrate the substrate 19.
  • the substrate 19 is provided so as not to contact the lower conductor 2 2 force side conductor plate 21 which is a conductor corresponding to the lower conductor plate 11.
  • the lower conductor 22 is formed by applying a conductive member to a conductor plate or substrate 19.
  • the capacitive conductor plate 20 is provided on the side conductor plate 21 so that the lower conductor 22 is sandwiched between the substrate 19 and the lower conductor 22.
  • a capacitor is formed by the capacitive conductor plate 20 and the lower conductor 2 2 sandwiching the substrate 19.
  • the lower conductor plate 31 is provided with a capacitor conductor plate 36 so that the surface of the lower conductor plate 31 is parallel to the side conductor plate 34.
  • the upper conductor plate 3 2, the connection conductor plate 3 3, the side conductor plate 3 4, and the capacitor conductor plate 3 6 are made of, for example, zinc-plated iron with a thickness of 0.5 mm.
  • the screw 3 5 screwed into the side conductor plate 3 4 is rotated to change the depth of insertion into the side conductor plate 3 4, so that the tip of the screw 3 5 and the capacitive conductor plate 3
  • the distance between can be changed.
  • the capacitance of the capacitor changes. Changing the capacitance of the capacitor T / JP2008 / 066369
  • Figure 11 shows the VSWR (Voltage Standing Wave Ratio) of ⁇ with the operating frequency of this plate loop antenna adjusted to 315 MHz.
  • Figure 12 (a), (b), (; c) shows the radiation patterns of the plate loop antenna in the X-Y, Y-Z, and X-Z planes. The solid line represents vertical polarization and the broken line represents horizontal polarization.
  • this plate-like loop antenna is small, a high gain can be obtained as compared with other antennas of the same size.
  • the circuit can be mounted on the substrate 30, space saving and cost reduction can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Computer Security & Cryptography (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Details Of Aerials (AREA)
  • Waveguide Aerials (AREA)

Abstract

L'invention concerne un dispositif d'antenne qui, en comparaison aux dispositifs d'antennes traditionnels, est plus petit et a un gain supérieur. Ce dispositif d'antenne a une antenne cadre, dont le cadre est formé par une plaque conductrice supérieure, une plaque conductrice inférieure disposée face à la plaque conductrice supérieure, une plaque conductrice de connexion servant à connecter électriquement la plaque conductrice supérieure et la plaque conductrice inférieure, et une plaque conductrice latérale connectée à la plaque conductrice supérieure. Une plaque conductrice de condensateur est connectée à la plaque conductrice inférieure pour constituer un condensateur entre la plaque conductrice inférieure et la plaque conductrice latérale.
PCT/JP2008/066369 2007-09-05 2008-09-04 Dispositif d'antenne WO2009031700A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007230384A JP2009065354A (ja) 2007-09-05 2007-09-05 アンテナ装置
JP2007-230384 2007-09-05

Publications (1)

Publication Number Publication Date
WO2009031700A1 true WO2009031700A1 (fr) 2009-03-12

Family

ID=40429004

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/066369 WO2009031700A1 (fr) 2007-09-05 2008-09-04 Dispositif d'antenne

Country Status (2)

Country Link
JP (1) JP2009065354A (fr)
WO (1) WO2009031700A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9054428B2 (en) 2010-12-28 2015-06-09 Tdk Corporation Antenna and wireless communication unit
WO2023230055A1 (fr) * 2022-05-24 2023-11-30 Meta Platforms Technologies, Llc Antenne pour dispositifs électroniques portables
US11855365B1 (en) * 2022-07-13 2023-12-26 KaiKuTek Inc. Loop antenna

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011171839A (ja) * 2010-02-16 2011-09-01 Toshiba Tec Corp アンテナおよび携帯機器
JP5465575B2 (ja) * 2010-03-31 2014-04-09 長野日本無線株式会社 非接触電力伝送用アンテナ装置、送電装置、受電装置および非接触電力伝送システム
IT1400110B1 (it) * 2010-05-21 2013-05-17 S Di G Moiraghi & C Soc Sa Antenna planare compatta.
JP2012023167A (ja) * 2010-07-14 2012-02-02 Nagano Japan Radio Co 容量可変型コンデンサ、非接触電力伝送用アンテナ装置、送電装置、受電装置および非接触電力伝送システム
KR101234428B1 (ko) 2011-03-30 2013-02-18 주식회사 에이스테크놀로지 원형 편파 안테나

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS642408A (en) * 1987-06-25 1989-01-06 Matsushita Electric Works Ltd Antenna system
JPH03154404A (ja) * 1989-11-10 1991-07-02 Sumitomo Metal Ind Ltd 高周波用共振器
JPH0856107A (ja) * 1994-08-11 1996-02-27 Matsushita Electric Ind Co Ltd デュアルモード共振器
JP2000269728A (ja) * 1999-03-17 2000-09-29 Kokusai Electric Co Ltd 板状逆ｆ型アンテナ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS642408A (en) * 1987-06-25 1989-01-06 Matsushita Electric Works Ltd Antenna system
JPH03154404A (ja) * 1989-11-10 1991-07-02 Sumitomo Metal Ind Ltd 高周波用共振器
JPH0856107A (ja) * 1994-08-11 1996-02-27 Matsushita Electric Ind Co Ltd デュアルモード共振器
JP2000269728A (ja) * 1999-03-17 2000-09-29 Kokusai Electric Co Ltd 板状逆ｆ型アンテナ

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9054428B2 (en) 2010-12-28 2015-06-09 Tdk Corporation Antenna and wireless communication unit
WO2023230055A1 (fr) * 2022-05-24 2023-11-30 Meta Platforms Technologies, Llc Antenne pour dispositifs électroniques portables
US11855365B1 (en) * 2022-07-13 2023-12-26 KaiKuTek Inc. Loop antenna
US20240021991A1 (en) * 2022-07-13 2024-01-18 KaiKuTek Inc. Loop antenna

Also Published As

Publication number Publication date
JP2009065354A (ja) 2009-03-26

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