WO1996022618A1 - Antenne en boucle pour ondes a polarisation circulaire - Google Patents
Antenne en boucle pour ondes a polarisation circulaire Download PDFInfo
- Publication number
- WO1996022618A1 WO1996022618A1 PCT/JP1996/000071 JP9600071W WO9622618A1 WO 1996022618 A1 WO1996022618 A1 WO 1996022618A1 JP 9600071 W JP9600071 W JP 9600071W WO 9622618 A1 WO9622618 A1 WO 9622618A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- circularly polarized
- loop
- antenna
- loop antenna
- shaped
- Prior art date
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
- H01Q11/12—Resonant antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
- H01Q11/12—Resonant antennas
- H01Q11/14—Resonant antennas with parts bent, folded, shaped or screened or with phasing impedances, to obtain desired phase relation of radiation from selected sections of the antenna or to obtain desired polarisation effect
Definitions
- the present invention relates to a circularly polarized wave loop antenna, and is particularly suitable for being applied to an antenna for a terminal device of a circularly polarized wave mode communication system.
- the low-profile circularly polarized antennas which have a small thickness, can be installed on mobile objects such as automobiles and airplanes because the protrusions caused by installing the antenna can be made inconspicuous.
- Various types of circularly polarized antennas have been proposed as antennas that are suitable for use as an antenna to be used.
- One example of this is “B-104 None” Loop antennas with feed elements ”
- Figures 5 to 7 show the circularly-polarized loop antennas described in Hisamatsu Nakano, 3rd author, 2-104 page, but Fig. 6 shows the first example.
- a C 1 -type circularly polarized loop antenna is shown
- FIG. 7 shows a second example of a C 2 -type circularly polarized loop antenna:
- FIG. 5 is a front view of the circularly polarized loop antenna
- FIG. 6 is a top view of the C 1 TYPE circularly polarized loop antenna:
- the C] —TYPE circularly polarized loop antenna is disposed in parallel with the coaxial feed loop element 100; opposing the ground line 105, and has a coaxial feed loop element 1
- a parasitic element 1 0 1 of larger diameter is arranged in parallel while maintaining a concentric relationship on 0 0: ground
- the distance between the plane 105 and the coaxial feed loop element 100 is set as, and the distance between the ground plane 105 and the parasitic loop element 101 is set as HP.
- the feed conductor 106 is the other end of the I-shaped conductor 104 having one end connected to the coaxial feed loop element 100 shown in FIG.
- the coaxial feed loop element 100 is supplied with power, and the feed conductor 106 is connected to the central conductor of the coaxial line 102 as shown in FIG. It is connected.
- the parasitic loop element 101 is provided with a cut-off point 103, and the angle between the cut-off portion 103 and the I-shaped conductor 104 is ⁇ , and the cut-off portion
- the length of 103 is ⁇ g.
- the angle ⁇ is set to around the block 45 or 1 3 5 :: , the left-handed circularly polarized wave is radiated by the action of the cutting portion 103, and the angle ⁇ becomes ⁇ 45 ”or +1. 3 5 when the vicinity of Y, I Uninaru Rimigi ⁇ circularly polarized wave by the action of heat sword cross section 1 0 3 is emitted:, At this time, the coaxial feeder loop element 1 0 0 and the parasitic Lube The current flows through the element 101 in a state similar to a traveling wave. Also, when the natural space wavelength is selected, the coaxial feed loop element is used.
- FIG. 7 shows a top view of the C 2 — TYPE circularly-polarized wave antenna and the antenna.
- the C 2 — TYPE circularly-polarized wave antenna has a coaxial feed roof element 10.
- 0 is parallel to ground plane 1 0 5
- the parasitic loop element 101 having a larger diameter is arranged in parallel with the concentric feeding loop element 100 while maintaining a concentric relationship.
- the distance between the ground plane 1 0 5 and coaxial feeder loop element 1 00 H is a
- the distance between the ground plane 1 0 5 and the parasitic loop element 1 0 1 are the H P.
- the feed conductor 106 is an I-shaped conductor having one end connected to the coaxial feed loop element 100 shown in FIG. By being connected to the other end of 104, the coaxial feed loop element 100 is fed.
- the power supply conductor 106 is connected to the core conductor of the coaxial line 102 as shown in FIG.
- a cut portion 103 is provided at a position opposing two places in the parasitic loop element 101, and the angle between the cut portion 103 and the axis of the I-shaped conductor 104 is ⁇ ⁇ . , The length force of the cut section 103;
- the angle ⁇ is +45. And one one three five.
- angular [Phi,> is - when 4 4.5: are you and ⁇ 1 3 5 near gamma, cutting portion
- the action of 103 right-handed circularly polarized light is emitted.
- the current flows through the coaxial feed lube element 100 in a state close to a traveling wave, and the current flowing through the parasitic loop element 101 becomes a standing waveform.
- the frequency band in which a predetermined gain can be obtained is narrow, and the frequency band in which a circular polarization axis ratio within 3.0 dB can be obtained is approximately 1 dB.
- the bandwidth was as narrow as 2%.
- the present invention can widen the frequency band in which a predetermined gain can be obtained, can widen the frequency band of the circular polarization axis ratio to frequency characteristic, and can further improve the circular polarization loop antenna having a simple structure.
- the purpose is to provide ten. Disclosure of the invention
- a circularly polarized loop antenna of the present invention has a C-shaped loop element having a cut portion, one end connected to the C-shaped lube element, and the other end serving as a feed point. And an I-shaped conductor extending in the radial direction of the loop element, and the C-shaped roof element is arranged to face the ground plane at a predetermined interval.
- the angle formed by the cut portion provided in the C-shaped loop element and the I-shaped conductor is approximately ⁇ 3.
- the circumference of the C-type roof element is set to be approximately 1.0 to 5.5 ⁇ .
- the distance between the element and the ground plane is set to about 0.05 to 0.26 ⁇ , and the length of the I-shaped conductor is set to about 0 to 0.47 mm.
- ADVANTAGE OF THE INVENTION since a circularly polarized wave loop antenna can be comprised by one loop element, a structure can be simplified and it is a small and low profile circularly polarized wave loop antenna. This makes it possible to make the antenna suitable as a BS antenna or GPS antenna mounted on a moving body or the like.
- the feeder line loss can and small Kusuruko can Ku Kusuru to affected by the ambient environment of the feed line c
- the circularly polarized loop antenna of the present invention can also be used as a shared antenna in a circularly polarized mode communication system having a plurality of different frequencies. Also, since the antenna input impedance versus frequency characteristics can be broadened, manufacturing can be performed easily and cost can be reduced.
- FIG. 1 is a perspective view showing the configuration of an embodiment of the circularly polarized loop antenna of the present invention
- FIG. 2 is a front view showing the configuration of an embodiment of the circularly polarized loop antenna of the present invention
- FIG. 3 is a diagram showing gain versus frequency characteristics of the present invention and a conventional circularly polarized loop antenna
- FIG. 4 is a diagram of the present invention and a conventional circularly polarized loop antenna.
- FIG. 5 is a diagram showing a circular polarization axis ratio versus frequency characteristic
- FIG. 5 is a front view showing an example of a configuration of a conventional circular polarization loop antenna
- FIG. FIG. 7 is a top view showing an example of the configuration
- FIG. 7 is a top view showing another example of the configuration of the conventional circularly polarized rubbing antenna.
- FIG. 1 is a perspective view showing the configuration of one embodiment of the circularly polarized loop antenna of the present invention.
- 1 is a C-shaped loop element having a cut 6 formed therein
- 2 is an I-shaped conductor having one end connected to the C-shaped loop element 1 and the other end being a feed point 5
- 3 is a C-shaped loop element.
- Ground plane arranged in parallel with the loop element 1, 4 is a coaxial line for transmitting the power supplied to the C-type loop element
- 7 is the other end of the coaxial line 4 to the core conductor.
- the feed conductor is connected and one end is connected to feed point 5:
- Fig. 2 (a) shows a top view of the circularly polarized laser antenna
- Fig. 2 (b) shows a front view of the same.
- the tip of the power supply conductor 7 is connected to the power supply point 5 at the other end of the I-shaped conductor 2, so that the C-type loop element ⁇ is connected via the coaxial line 4. Power is being supplied.
- the other end of the power supply conductor 7 is connected to the center of the coaxial line 4.
- the distance between the ground plane 3 and the C-shaped loop element 1 is h
- the angle between the axis of the I-shaped conductor 2 and the cut part 6 is ⁇ ..
- the length of the cut part 6 is Is ⁇ g
- the length force of the I-shaped conductor is'; 1, and ⁇ is shown in the figure
- the circular length of the C-type single-mode element 1 is C:
- the gain characteristic of the circularly polarized laser antenna of the present invention is a As a result, a high gain of about 8.6 [dBi] is obtained over a wide band of 8%.
- the axial ratio characteristic of the circularly polarized loop antenna of the present invention is indicated by a, and the frequency band in which the circularly polarized axis ratio of 3.0 OdB or less is obtained is about 6.1%. It is a wide area.
- the frequency band in which the circular polarization axis ratio within 3.0 dB can be obtained is approximately five times that of the conventional frequency band, and as shown in Fig. 3, a wide band and high gain are achieved.
- antennas of a plurality of communication systems having different frequencies in the circular polarization mode at frequencies equal to or higher than the L band can be shared by one circular polarization loop antenna of the present invention. Swell.
- the circularly polarized loop antenna of the present invention since the circularly polarized loop antenna of the present invention has a small size and a low profile, it is preferably applied to a GPS antenna or a BS antenna mounted on a mobile object.
- the distance h between the ground plane 3 and the C-shaped lubricating element 1 can be set to a range of approximately 0.055 ⁇ to 0.26 ⁇ , and the distance between the axis of the I-shaped conductor 2 and the cut portion 6 can be reduced.
- the angle ⁇ ., Is approximately 3 15 :: :: 3 25 “The force can be in the range of '; and the length ⁇ g of the cut portion 6 is approximately 0.01 mm ⁇ 0.0 2.
- the length 1 of the I-shaped conductor can be in the range of approximately 0 ⁇ to 0.47 mm, and the circumferential length C of the C-type loop element 1 is approximately 1.0. E ⁇ 1.5 E can be in the range.
- the angle ⁇ ; Force was ⁇ 3 2 5 ⁇ ;, approximately 1 3 5 of this diagonally. ⁇ 1 4 5.
- the angle ⁇ formed by the cut portion 6 formed in the mold loop element 1 is approximately 35 to 45. (2 1 ⁇ : ⁇ 2 25.) .- That is, the circularly polarized roof of the present invention In the antenna may be an angular [Phi 3 in earthenware pots by the ⁇ 3 5 ° ⁇ Sat 4 5 ° or approximately ⁇ 1 3 5 c ⁇ Sat 1 4 5 °.
- the antenna input impedance versus frequency characteristic of the circularly polarized loop antenna of the present invention is at least 1.5 times wider than that of the conventional one, so that the dimensional tolerance and manufacturing The permissible range of variation in the performance of the material can be widened: therefore, it can be easily manufactured and cost can be reduced.
- the circularly polarized loop antenna of the present invention shown in FIGS. 1 and 2 is fed by the coaxial line 4, the feed loss of the coaxial line 4 can be reduced, and The influence of the surrounding environment of the line 4 can be reduced, and the original performance of the circularly polarized loop antenna can be maintained.
- a circularly polarized roof antenna can be formed by forming the C-type lubricating element 1 on a dielectric substrate by microstrip lining, but the dielectric is made of a dielectric material. It can also be replaced with a foam that performs little function:
- An array antenna can be configured by using a C configuration, and a higher-gain antenna can be used. be able to,:
- a circularly polarized wave loop antenna can be configured by one loop element, so that the structure can be simplified and a small and low-profile circularly polarized wave loop antenna is provided. It can be a suitable antenna as a BS antenna or GPS antenna mounted on a moving body or the like.
- feed line loss can be reduced, and the effect of the surrounding environment of the feed line can be reduced. Can be maintained c
- the circular polarization axis ratio vs. frequency characteristic can be widened, and the gain vs. frequency characteristic can be wideband and high gain, the circular polarization mode having a plurality of different frequencies can be used.
- the circularly polarized loop antenna of the present invention can be used as a shared antenna in a communication system:
- the antenna input impedance versus frequency characteristic can be widened, manufacturing is easy. c can be and the child to achieve the cost-down can be performed by the
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- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/704,696 US5838283A (en) | 1995-01-18 | 1996-01-18 | Loop antenna for radiating circularly polarized waves |
DE69633597T DE69633597T2 (de) | 1995-01-18 | 1996-01-18 | Schleifenantenne für zirkularpolarisation |
EP96900707A EP0751581B1 (en) | 1995-01-18 | 1996-01-18 | Loop antenna for circularly polarized wave |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7/22362 | 1995-01-18 | ||
JP02236295A JP3431045B2 (ja) | 1995-01-18 | 1995-01-18 | 円偏波ループアンテナ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996022618A1 true WO1996022618A1 (fr) | 1996-07-25 |
Family
ID=12080524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1996/000071 WO1996022618A1 (fr) | 1995-01-18 | 1996-01-18 | Antenne en boucle pour ondes a polarisation circulaire |
Country Status (6)
Country | Link |
---|---|
US (1) | US5838283A (ja) |
EP (1) | EP0751581B1 (ja) |
JP (1) | JP3431045B2 (ja) |
KR (1) | KR100354361B1 (ja) |
DE (1) | DE69633597T2 (ja) |
WO (1) | WO1996022618A1 (ja) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1188034A (ja) * | 1997-09-04 | 1999-03-30 | Harada Ind Co Ltd | Gps波用アンテナ装置 |
US6064347A (en) * | 1997-12-29 | 2000-05-16 | Scientific-Atlanta, Inc. | Dual frequency, low profile antenna for low earth orbit satellite communications |
JP4260917B2 (ja) * | 1998-03-31 | 2009-04-30 | 株式会社東芝 | ループアンテナ |
US6437756B1 (en) * | 2001-01-02 | 2002-08-20 | Time Domain Corporation | Single element antenna apparatus |
JP4597579B2 (ja) | 2003-08-05 | 2010-12-15 | 日本アンテナ株式会社 | 反射板付平面アンテナ |
JP4195403B2 (ja) * | 2004-03-01 | 2008-12-10 | 株式会社国際電気通信基礎技術研究所 | アンテナ構造体およびテレビ受像機 |
JP4297840B2 (ja) | 2004-06-24 | 2009-07-15 | 古野電気株式会社 | 円偏波ループアンテナ |
US7385561B2 (en) * | 2005-02-17 | 2008-06-10 | Galtronics Ltd. | Multiple monopole antenna |
JP4511382B2 (ja) * | 2005-02-21 | 2010-07-28 | 古野電気株式会社 | 円偏波ループアンテナ |
US7605761B2 (en) | 2006-11-30 | 2009-10-20 | Semiconductor Energy Laboratory Co., Ltd. | Antenna and semiconductor device having the same |
US7505009B2 (en) * | 2006-12-11 | 2009-03-17 | Harris Corporation | Polarization-diverse antenna array and associated methods |
US8847832B2 (en) * | 2006-12-11 | 2014-09-30 | Harris Corporation | Multiple polarization loop antenna and associated methods |
JP5153300B2 (ja) * | 2007-11-07 | 2013-02-27 | 富士通テン株式会社 | アンテナ |
US8319688B2 (en) * | 2009-02-18 | 2012-11-27 | Harris Corporation | Planar slot antenna having multi-polarization capability and associated methods |
US8044874B2 (en) * | 2009-02-18 | 2011-10-25 | Harris Corporation | Planar antenna having multi-polarization capability and associated methods |
US8144066B2 (en) * | 2009-02-26 | 2012-03-27 | Harris Corporation | Wireless communications including an antenna for wireless power transmission and data communication and associated methods |
JP5866860B2 (ja) * | 2011-01-05 | 2016-02-24 | セイコーエプソン株式会社 | 無線機能付き時計 |
US20130201065A1 (en) | 2012-02-02 | 2013-08-08 | Harris Corporation | Wireless communications device having loop antenna with four spaced apart coupling points and associated methods |
US20130201066A1 (en) | 2012-02-02 | 2013-08-08 | Harris Corporation | Wireless communications device having loop antenna with four spaced apart coupling points and reflector and associated methods |
US20130201070A1 (en) | 2012-02-02 | 2013-08-08 | Harris Corporation | Wireless communications device having loop waveguide transducer with spaced apart coupling points and associated methods |
JP5576522B2 (ja) * | 2012-02-21 | 2014-08-20 | 株式会社フジクラ | アンテナ |
JP5866231B2 (ja) | 2012-03-05 | 2016-02-17 | 日本アンテナ株式会社 | リングアンテナ |
JP6018853B2 (ja) * | 2012-03-05 | 2016-11-02 | 日本アンテナ株式会社 | 円偏波アンテナ |
CN102969559A (zh) * | 2012-11-01 | 2013-03-13 | 深圳桑菲消费通信有限公司 | 一种手机的gps天线结构 |
JP2015070587A (ja) | 2013-10-01 | 2015-04-13 | セイコーエプソン株式会社 | アンテナ及び電子装置 |
JP6354267B2 (ja) * | 2014-04-01 | 2018-07-11 | 株式会社デンソーウェーブ | アンテナ装置、および通信装置 |
CN108140931B (zh) * | 2016-09-18 | 2020-07-07 | 华为技术有限公司 | 一种无线网络天线及通信设备 |
JP6145785B1 (ja) * | 2017-01-25 | 2017-06-14 | パナソニックIpマネジメント株式会社 | アンテナ装置 |
KR101945824B1 (ko) * | 2018-07-30 | 2019-02-07 | 한국지질자원연구원 | 지면 이격형 지표투과레이다 안테나 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02214304A (ja) * | 1989-02-15 | 1990-08-27 | Hirose Electric Co Ltd | 円偏波用ループアンテナ |
JPH0480114U (ja) * | 1990-11-27 | 1992-07-13 | ||
JPH07249921A (ja) * | 1994-03-08 | 1995-09-26 | Nippon Dengiyou Kosaku Kk | 偏波可変アンテナ |
Family Cites Families (10)
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US2116734A (en) * | 1936-10-08 | 1938-05-10 | Rca Corp | Short-wave antenna |
US2405123A (en) * | 1943-08-07 | 1946-08-06 | Gen Electric | Antenna system |
US2785396A (en) * | 1946-01-09 | 1957-03-12 | Philip S Carter | Large circumference loop antennas |
US3833908A (en) * | 1973-07-25 | 1974-09-03 | S Loh | Back-fire loop antenna |
JPH0286201A (ja) * | 1988-09-21 | 1990-03-27 | Harada Ind Co Ltd | 自動車用ループアンテナ |
JPH0682976B2 (ja) * | 1989-09-25 | 1994-10-19 | 株式会社横尾製作所 | 円偏波用パラボラアンテナ装置 |
JP2584698B2 (ja) * | 1991-10-17 | 1997-02-26 | ヒロセ電機株式会社 | 電磁界結合形円偏波用ループアンテナ |
GB2263360B (en) * | 1992-01-06 | 1996-02-07 | C & K Systems Inc | Improvements in or relating to antennas |
JPH06268432A (ja) * | 1993-03-10 | 1994-09-22 | Hisamatsu Nakano | 直線偏波用ループアンテナ |
JPH07183721A (ja) * | 1993-12-22 | 1995-07-21 | Nippon Antenna Co Ltd | 同軸給電円偏波ループアンテナ |
-
1995
- 1995-01-18 JP JP02236295A patent/JP3431045B2/ja not_active Expired - Fee Related
-
1996
- 1996-01-18 DE DE69633597T patent/DE69633597T2/de not_active Expired - Fee Related
- 1996-01-18 WO PCT/JP1996/000071 patent/WO1996022618A1/ja active IP Right Grant
- 1996-01-18 EP EP96900707A patent/EP0751581B1/en not_active Expired - Lifetime
- 1996-01-18 KR KR1019960705153A patent/KR100354361B1/ko not_active IP Right Cessation
- 1996-01-18 US US08/704,696 patent/US5838283A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02214304A (ja) * | 1989-02-15 | 1990-08-27 | Hirose Electric Co Ltd | 円偏波用ループアンテナ |
JPH0480114U (ja) * | 1990-11-27 | 1992-07-13 | ||
JPH07249921A (ja) * | 1994-03-08 | 1995-09-26 | Nippon Dengiyou Kosaku Kk | 偏波可変アンテナ |
Non-Patent Citations (1)
Title |
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See also references of EP0751581A4 * |
Also Published As
Publication number | Publication date |
---|---|
JPH08195617A (ja) | 1996-07-30 |
KR100354361B1 (ko) | 2004-05-22 |
JP3431045B2 (ja) | 2003-07-28 |
DE69633597T2 (de) | 2005-11-03 |
EP0751581B1 (en) | 2004-10-13 |
EP0751581A4 (en) | 2000-04-19 |
EP0751581A1 (en) | 1997-01-02 |
US5838283A (en) | 1998-11-17 |
DE69633597D1 (de) | 2004-11-18 |
KR970701935A (ko) | 1997-04-12 |
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