WO2004038860A1 - 不平衡型アンテナ - Google Patents
不平衡型アンテナ Download PDFInfo
- Publication number
- WO2004038860A1 WO2004038860A1 PCT/JP2003/013185 JP0313185W WO2004038860A1 WO 2004038860 A1 WO2004038860 A1 WO 2004038860A1 JP 0313185 W JP0313185 W JP 0313185W WO 2004038860 A1 WO2004038860 A1 WO 2004038860A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- ground
- conductor
- unbalanced antenna
- transmission line
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
- H01Q17/001—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems for modifying the directional characteristic of an aerial
-
- 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
-
- 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
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
-
- 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
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/32—Vertical arrangement of element
- H01Q9/38—Vertical arrangement of element with counterpoise
-
- 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
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/40—Element having extended radiating surface
Definitions
- the present invention relates to an unbalanced antenna that can be mounted on a small wireless device, and more particularly to an unbalanced antenna that has a reduced ground conductor while maintaining antenna characteristics.
- PAN personal area network
- the unbalanced antenna according to the first aspect of the present invention may further include a portion where the ground conductor contributes to mode matching.
- the lateral width of the entire duland electrode including the secondary duland electrode may be set so as to be substantially equal to the lateral width of the radiation electrode, and the function as the counter electrode of the radiation electrode may be maintained.
- the electric resistor can be constituted by a chip-type resistor.
- An unbalanced antenna comprising: a radiation electrode extension and an electric signal feeder disposed between the duland electrodes.
- FIG. 3 is a diagram showing an example of the shape of the radiation conductor.
- FIG. 19 is a diagram showing a specific mounting mode of an unbalanced antenna formed using a dielectric substrate.
- FIG. 20 is a diagram showing a specific mounting state of an unbalanced antenna formed using a dielectric substrate.
- the loading of the resistance component compensates for the VS WR characteristic on the left side of the figure.
- the leakage current suppression mechanism suppresses disturbance of radiation directivity at the center of the figure. It becomes
- FIG. 8 schematically shows a configuration of an unbalanced antenna according to one embodiment of the present invention.
- a disk 'monopole-antenna' is taken as an example of an unbalanced antenna.
- FIG. 9 shows calculation results of antenna characteristics of the monopole antenna having the configuration shown in FIG.
- the left side of the figure shows the VSWR characteristics that indicate the impedance matching
- the center of the figure shows the radiation directivity in the vertical plane at 3 GHz
- the right side of the figure shows the surface current density distribution at 3 GHz (shade and density). Is shown).
- the dimensions of the radiating conductor and ground conductor are the same as in Fig. 5 (right). 1 Radiating conductor
- FIG. 10 schematically shows a configuration of an unbalanced antenna according to another embodiment of the present invention. Also in this figure, a disk / monopole 'antenna is taken as an example of an unbalanced antenna.
- FIG. 13 shows a configuration of an unbalanced antenna according to still another embodiment of the present invention.
- the ground conductor instead of making a part of the ground conductor have low conductivity, the ground conductor is reduced while leaving only the part almost directly facing the radiation conductor, and a plurality of ground conductors are added according to the distance from the power supply unit.
- the divided ground conductors are connected by electrical resistors. Also in this embodiment, the same effect as the unbalanced antenna according to the embodiment described with reference to FIG. 8 can be obtained.
- FIG. 17 shows a specific implementation of the unbalanced antenna shown in FIG.
- an unbalanced antenna is formed using a dielectric substrate which is generally distributed.
- FIG. 18 shows a specific implementation of the unbalanced antenna shown in FIG. Also in the illustrated embodiment, an unbalanced antenna is formed by using a dielectric substrate which is generally distributed.
- FIG. 19 shows another mounting mode in which an unbalanced antenna is formed using a dielectric substrate.
- the illustrated embodiment is different from the mounting embodiment described above with reference to FIGS. 17 and 18 in that an unbalanced antenna is configured using a laminated dielectric substrate.
- a laminated dielectric substrate having three upper, middle, and lower electrodes is used.
- a counter ground electrode is provided near a portion facing the transmission line electrode. Furthermore, a plurality of via holes are arranged on both sides of the transmission line electrode on the middle layer so as to sandwich it, and the ground electrode on the lower layer and the opposing ground electrode on the upper layer are electrically connected. A so-called strip line is formed by the two ground electrodes and the transmission line electrode.
- Electric power is supplied between the transmission line electrode and the ground electrode, or between the transmission line electrode and the transmission line electrode. It is formed between the opposing ground electrodes.
- FIG. 20 shows another mounting mode in which an unbalanced antenna is formed by using a laminated dielectric substrate having three layers of electrodes (upper, middle, and lower layers).
- the illustrated embodiment has a configuration in which a current absorber covering a part of the periphery of the duland electrode and the opposing duland electrode is further added to the mounting mode shown in FIG.
- the current absorber is more preferably covered so as to be in close contact with a part of the periphery of the ground electrode and the counter ground electrode.
- FIG. 21 illustrates a specific mounting mode in which the unbalanced antenna according to the present invention is configured by using an insulator lump such as engineering plastic which is widely distributed.
- a conical depression is formed on one end surface of the insulator, and a radiation electrode is formed on the inner surface of the depression by a plating method or the like.
- the radiation electrode may be formed so as to fill the entire depression.
- the shape of the depression formed in the insulator lump is not limited to the conical shape as shown in FIG.
- an elliptical cone or a pyramid may be used.
- the outer shape of the insulator mass is not particularly limited. Basically, any shape that has two opposing end faces, such as a cylinder and a prism, may be used.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Details Of Aerials (AREA)
- Waveguide Aerials (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03754132A EP1564841A4 (en) | 2002-10-23 | 2003-10-15 | UNSYMMETRIC ANTENNA |
BR0306600-2A BR0306600A (pt) | 2002-10-23 | 2003-10-15 | Antena não balanceada |
US10/498,518 US7180466B2 (en) | 2002-10-23 | 2003-10-15 | Unbalanced antenna |
AU2003273012A AU2003273012A1 (en) | 2002-10-23 | 2003-10-15 | Unbalanced antenna |
US11/616,230 US7515114B2 (en) | 2002-10-23 | 2006-12-26 | Unbalanced antenna |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002/307910 | 2002-10-23 | ||
JP2002307910A JP3620044B2 (ja) | 2002-10-23 | 2002-10-23 | 不平衡型アンテナ |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/498,518 A-371-Of-International US7180466B2 (en) | 2002-10-23 | 2003-10-15 | Unbalanced antenna |
US11/616,230 Continuation US7515114B2 (en) | 2002-10-23 | 2006-12-26 | Unbalanced antenna |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004038860A1 true WO2004038860A1 (ja) | 2004-05-06 |
Family
ID=32170952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/013185 WO2004038860A1 (ja) | 2002-10-23 | 2003-10-15 | 不平衡型アンテナ |
Country Status (9)
Country | Link |
---|---|
US (2) | US7180466B2 (ja) |
EP (2) | EP1564841A4 (ja) |
JP (1) | JP3620044B2 (ja) |
KR (1) | KR101077792B1 (ja) |
CN (1) | CN100483847C (ja) |
AU (1) | AU2003273012A1 (ja) |
BR (1) | BR0306600A (ja) |
DE (1) | DE60329125D1 (ja) |
WO (1) | WO2004038860A1 (ja) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005094437A (ja) * | 2003-09-18 | 2005-04-07 | Mitsumi Electric Co Ltd | Uwb用アンテナ |
JP3964382B2 (ja) * | 2003-11-11 | 2007-08-22 | ミツミ電機株式会社 | アンテナ装置 |
JP2005269366A (ja) * | 2004-03-19 | 2005-09-29 | Mitsubishi Electric Corp | アンテナ装置 |
CN1330052C (zh) * | 2005-06-15 | 2007-08-01 | 东南大学 | 延迟线电阻加载脉冲天线 |
GB2439110B (en) * | 2006-06-13 | 2009-08-19 | Thales Holdings Uk Plc | An ultra wideband antenna |
JP2008263384A (ja) * | 2007-04-11 | 2008-10-30 | Omron Corp | 広帯域アンテナ |
US8564385B2 (en) * | 2007-08-23 | 2013-10-22 | Lockheed Martin Corporation | Coaxial concentric nonlinear transmission line |
US8730114B2 (en) * | 2010-06-02 | 2014-05-20 | Mitre Corporation | Low-profile multiple-beam lens antenna |
EP2645298A1 (en) * | 2012-03-30 | 2013-10-02 | austriamicrosystems AG | Portable object and information transmission system |
US9972902B2 (en) | 2014-11-04 | 2018-05-15 | Panasonic Intellectual Property Management Co., Ltd. | Antenna device and electronic device |
TWI563737B (en) * | 2015-05-26 | 2016-12-21 | Wistron Neweb Corp | Collinear Dipole Antenna and Communication Device Thereof |
CN106299707B (zh) * | 2015-06-04 | 2019-04-16 | 启碁科技股份有限公司 | 共线偶极天线及相关通讯装置 |
EP3174158A1 (en) * | 2015-11-27 | 2017-05-31 | AGC Glass Europe | High-frequency and wideband antenna comprising connection controlling means |
CN106252852A (zh) * | 2016-09-18 | 2016-12-21 | 北京石油化工学院 | 单极子超宽带天线 |
KR101750336B1 (ko) | 2017-03-31 | 2017-06-23 | 주식회사 감마누 | 다중대역 기지국 안테나 |
JP2019047328A (ja) * | 2017-09-01 | 2019-03-22 | 富士通株式会社 | アンテナ及び通信装置 |
US11469502B2 (en) * | 2019-06-25 | 2022-10-11 | Viavi Solutions Inc. | Ultra-wideband mobile mount antenna apparatus having a capacitive ground structure-based matching structure |
US11611145B2 (en) * | 2021-01-28 | 2023-03-21 | Infinidome Ltd. | Ground plane for asymmetric antenna |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS418371B1 (ja) * | 1963-12-07 | 1966-04-30 | ||
WO1996024964A1 (en) * | 1995-02-06 | 1996-08-15 | Megawave Corporation | Television antennas |
JPH09223921A (ja) * | 1995-09-27 | 1997-08-26 | N T T Ido Tsushinmo Kk | 半円形放射板を使った広帯域アンテナ装置 |
US6014114A (en) * | 1997-09-19 | 2000-01-11 | Trimble Navigation Limited | Antenna with stepped ground plane |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE718695C (de) | 1938-05-14 | 1942-03-18 | Telefunken Gmbh | Abgeschirmte Antennenzuleitung |
US2237792A (en) * | 1938-05-14 | 1941-04-08 | Telefunken Gmbh | Antenna system and feeder |
DE4205851C2 (de) * | 1992-02-26 | 1995-10-12 | Flachglas Ag | In die Fensteröffnung einer metallischen Kraftfahrzeugkarosserie einzusetzende Antennenscheibe |
JPH08139515A (ja) | 1994-11-11 | 1996-05-31 | Toko Inc | 誘電体垂直偏波アンテナ |
US5847682A (en) * | 1996-09-16 | 1998-12-08 | Ke; Shyh-Yeong | Top loaded triangular printed antenna |
US5828340A (en) * | 1996-10-25 | 1998-10-27 | Johnson; J. Michael | Wideband sub-wavelength antenna |
DE19647648C2 (de) * | 1996-11-18 | 1999-12-09 | Ind Tech Res Inst | Gedruckte Antenne mit einem Resonatorelement |
US5990845A (en) * | 1997-07-02 | 1999-11-23 | Tci International | Broadband fan cone direction finding antenna and array |
US5986615A (en) * | 1997-09-19 | 1999-11-16 | Trimble Navigation Limited | Antenna with ground plane having cutouts |
US6307525B1 (en) * | 2000-02-25 | 2001-10-23 | Centurion Wireless Technologies, Inc. | Multiband flat panel antenna providing automatic routing between a plurality of antenna elements and an input/output port |
IT1319430B1 (it) | 2000-09-13 | 2003-10-10 | Zendar Spa | Antenna a basso profilo, senza stilo |
US6809687B2 (en) * | 2001-10-24 | 2004-10-26 | Alps Electric Co., Ltd. | Monopole antenna that can easily be reduced in height dimension |
JP3964382B2 (ja) * | 2003-11-11 | 2007-08-22 | ミツミ電機株式会社 | アンテナ装置 |
JP4280182B2 (ja) * | 2004-03-09 | 2009-06-17 | 富士通コンポーネント株式会社 | アンテナ装置 |
TWI267230B (en) * | 2004-06-15 | 2006-11-21 | Lin Ting Yu | Ultra wide band planner volcano smoke antenna |
-
2002
- 2002-10-23 JP JP2002307910A patent/JP3620044B2/ja not_active Expired - Fee Related
-
2003
- 2003-10-15 CN CNB200380100055XA patent/CN100483847C/zh not_active Expired - Fee Related
- 2003-10-15 BR BR0306600-2A patent/BR0306600A/pt not_active IP Right Cessation
- 2003-10-15 EP EP03754132A patent/EP1564841A4/en not_active Withdrawn
- 2003-10-15 US US10/498,518 patent/US7180466B2/en not_active Expired - Fee Related
- 2003-10-15 AU AU2003273012A patent/AU2003273012A1/en not_active Abandoned
- 2003-10-15 KR KR1020047009666A patent/KR101077792B1/ko not_active IP Right Cessation
- 2003-10-15 EP EP05014460A patent/EP1580842B1/en not_active Expired - Fee Related
- 2003-10-15 DE DE60329125T patent/DE60329125D1/de not_active Expired - Lifetime
- 2003-10-15 WO PCT/JP2003/013185 patent/WO2004038860A1/ja active Application Filing
-
2006
- 2006-12-26 US US11/616,230 patent/US7515114B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS418371B1 (ja) * | 1963-12-07 | 1966-04-30 | ||
WO1996024964A1 (en) * | 1995-02-06 | 1996-08-15 | Megawave Corporation | Television antennas |
JPH09223921A (ja) * | 1995-09-27 | 1997-08-26 | N T T Ido Tsushinmo Kk | 半円形放射板を使った広帯域アンテナ装置 |
US6014114A (en) * | 1997-09-19 | 2000-01-11 | Trimble Navigation Limited | Antenna with stepped ground plane |
Also Published As
Publication number | Publication date |
---|---|
KR101077792B1 (ko) | 2011-10-28 |
US7515114B2 (en) | 2009-04-07 |
US20060214869A1 (en) | 2006-09-28 |
CN1685561A (zh) | 2005-10-19 |
BR0306600A (pt) | 2004-09-28 |
CN100483847C (zh) | 2009-04-29 |
JP3620044B2 (ja) | 2005-02-16 |
KR20050071364A (ko) | 2005-07-07 |
US20070176828A1 (en) | 2007-08-02 |
EP1580842A2 (en) | 2005-09-28 |
EP1564841A4 (en) | 2005-12-21 |
EP1580842A3 (en) | 2006-05-10 |
EP1564841A1 (en) | 2005-08-17 |
DE60329125D1 (de) | 2009-10-15 |
EP1580842B1 (en) | 2009-09-02 |
JP2004146978A (ja) | 2004-05-20 |
US7180466B2 (en) | 2007-02-20 |
AU2003273012A1 (en) | 2004-05-13 |
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