CA2245882C - Antenne pour frequences superieures a 200 mhz - Google Patents
Antenne pour frequences superieures a 200 mhz Download PDFInfo
- Publication number
- CA2245882C CA2245882C CA002245882A CA2245882A CA2245882C CA 2245882 C CA2245882 C CA 2245882C CA 002245882 A CA002245882 A CA 002245882A CA 2245882 A CA2245882 A CA 2245882A CA 2245882 C CA2245882 C CA 2245882C
- Authority
- CA
- Canada
- Prior art keywords
- antenna
- core
- central axis
- elements
- unit according
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 230000005855 radiation Effects 0.000 claims abstract description 32
- 239000004020 conductor Substances 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 7
- 239000011162 core material Substances 0.000 claims description 111
- 239000000463 material Substances 0.000 claims description 17
- 239000011343 solid material Substances 0.000 claims description 7
- 230000000295 complement effect Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 2
- 230000001413 cellular effect Effects 0.000 abstract description 4
- 239000000919 ceramic Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 239000003989 dielectric material Substances 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- MYXYKQJHZKYWNS-UHFFFAOYSA-N barium neodymium Chemical compound [Ba][Nd] MYXYKQJHZKYWNS-UHFFFAOYSA-N 0.000 description 1
- YIMPFANPVKETMG-UHFFFAOYSA-N barium zirconium Chemical compound [Zr].[Ba] YIMPFANPVKETMG-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- 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
- H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
- H01Q11/08—Helical antennas
Landscapes
- Details Of Aerials (AREA)
- Support Of Aerials (AREA)
- Transceivers (AREA)
- Telephone Set Structure (AREA)
- Mobile Radio Communication Systems (AREA)
- Burglar Alarm Systems (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
La présente invention concerne une antenne miniature (10) pour fréquences supérieures à 200 MHz. Elle a un noyau en céramique (12) sous la forme d'un barreau cylindrique dont la constante diélectrique relative est supérieure à 5. Il y a, plaquée sur les surfaces extérieures du noyau, une structure en éléments d'antenne (10A, 10B) comprenant un seul couple d'éléments hélicoïdaux opposés, et qui ont un axe commun qui coïncide avec celui du noyau. A une extrémité éloignée de l'antenne, ils sont reliés à une structure d'alimentation coaxiale qui traverse le noyau axialement et, à leurs extrémités proches, ils sont reliés au bord d'un conducteur de filtrage cylindrique (20) qui, à l'extrémité proche du noyau, est couplé à l'écran de la structure d'alimentation. A la fréquence de fonctionnement, l'antenne se comporte comme une boucle, la réponse au rayonnement ayant des zéros dont la direction est sensiblement perpendiculaire de chaque côté d'un plan contenant l'axe du noyau et les connexions des éléments hélicoïdaux avec la structure d'alimentation et avec le manchon conducteur. Cette antenne est destinée surtout à une unité manuelle de communications telle qu'un combiné téléphonique cellulaire ou sans fil, la présence des zéros dans la forme du rayonnement réduisant les rayonnements dirigés vers la tête de l'utilisateur.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9601250.5 | 1996-01-23 | ||
| GBGB9601250.5A GB9601250D0 (en) | 1996-01-23 | 1996-01-23 | An antenna |
| GB9610581A GB2309592B (en) | 1996-01-23 | 1996-05-21 | An Antenna |
| GB9610581.2 | 1996-05-21 | ||
| PCT/GB1997/000085 WO1997027642A1 (fr) | 1996-01-23 | 1997-01-10 | Antenne pour frequences superieures a 200 mhz |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2245882A1 CA2245882A1 (fr) | 1997-07-31 |
| CA2245882C true CA2245882C (fr) | 2004-11-09 |
Family
ID=26308506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002245882A Expired - Fee Related CA2245882C (fr) | 1996-01-23 | 1997-01-10 | Antenne pour frequences superieures a 200 mhz |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0876688B1 (fr) |
| JP (1) | JP4467642B2 (fr) |
| CN (1) | CN1099721C (fr) |
| AT (1) | ATE242550T1 (fr) |
| AU (1) | AU720873B2 (fr) |
| CA (1) | CA2245882C (fr) |
| DE (1) | DE69722590T2 (fr) |
| WO (1) | WO1997027642A1 (fr) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9813002D0 (en) * | 1998-06-16 | 1998-08-12 | Symmetricom Inc | An antenna |
| GB9828768D0 (en) * | 1998-12-29 | 1999-02-17 | Symmetricom Inc | An antenna |
| GB9902765D0 (en) * | 1999-02-08 | 1999-03-31 | Symmetricom Inc | An antenna |
| DE19923524C1 (de) * | 1999-05-21 | 2001-04-19 | Siemens Ag | Verfahren zur Herstellung einer Antenne für Sende-/Empfangseinrichtungen |
| GB9912441D0 (en) * | 1999-05-27 | 1999-07-28 | Symmetricon Inc | An antenna |
| GB2420230B (en) * | 2004-11-11 | 2009-06-03 | Sarantel Ltd | A dielectrically-loaded antenna |
| GB2444749B (en) * | 2006-12-14 | 2009-11-18 | Sarantel Ltd | A radio communication system |
| KR100821981B1 (ko) * | 2007-02-02 | 2008-04-15 | 이성철 | 무지향성 안테나 |
| DE102013201685B4 (de) * | 2013-02-01 | 2019-04-04 | Siemens Healthcare Gmbh | Leiteranordnung mit dielektrischer Mantelwellensperre |
| CN115693106A (zh) * | 2022-11-10 | 2023-02-03 | 星启空间(南通)通信设备有限公司 | 一种卫星及星载天线 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4442438A (en) * | 1982-03-29 | 1984-04-10 | Motorola, Inc. | Helical antenna structure capable of resonating at two different frequencies |
| US5346300A (en) * | 1991-07-05 | 1994-09-13 | Sharp Kabushiki Kaisha | Back fire helical antenna |
| US5708445A (en) * | 1993-01-29 | 1998-01-13 | Motorola, Inc. | Antenna assembly for radio circuit and method therefor |
| GB9417450D0 (en) * | 1994-08-25 | 1994-10-19 | Symmetricom Inc | An antenna |
-
1997
- 1997-01-10 AT AT97900334T patent/ATE242550T1/de not_active IP Right Cessation
- 1997-01-10 WO PCT/GB1997/000085 patent/WO1997027642A1/fr not_active Ceased
- 1997-01-10 EP EP97900334A patent/EP0876688B1/fr not_active Expired - Lifetime
- 1997-01-10 AU AU13919/97A patent/AU720873B2/en not_active Ceased
- 1997-01-10 CN CN97193099.6A patent/CN1099721C/zh not_active Expired - Lifetime
- 1997-01-10 JP JP52662997A patent/JP4467642B2/ja not_active Expired - Lifetime
- 1997-01-10 DE DE69722590T patent/DE69722590T2/de not_active Expired - Lifetime
- 1997-01-10 CA CA002245882A patent/CA2245882C/fr not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| WO1997027642A1 (fr) | 1997-07-31 |
| ATE242550T1 (de) | 2003-06-15 |
| CN1214151A (zh) | 1999-04-14 |
| CN1099721C (zh) | 2003-01-22 |
| DE69722590D1 (de) | 2003-07-10 |
| CA2245882A1 (fr) | 1997-07-31 |
| AU720873B2 (en) | 2000-06-15 |
| AU1391997A (en) | 1997-08-20 |
| JP2000506690A (ja) | 2000-05-30 |
| JP4467642B2 (ja) | 2010-05-26 |
| EP0876688A1 (fr) | 1998-11-11 |
| DE69722590T2 (de) | 2004-05-06 |
| EP0876688B1 (fr) | 2003-06-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |