GB1010311A - Improvements in and relating to magnetic dipole aerials - Google Patents
Improvements in and relating to magnetic dipole aerialsInfo
- Publication number
- GB1010311A GB1010311A GB1991/62A GB199163A GB1010311A GB 1010311 A GB1010311 A GB 1010311A GB 1991/62 A GB1991/62 A GB 1991/62A GB 199163 A GB199163 A GB 199163A GB 1010311 A GB1010311 A GB 1010311A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sleeve
- ferrite rod
- split
- coupling loop
- rod
- 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
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
- 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
- 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
-
- 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
- H01Q7/06—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 core of ferromagnetic material
- H01Q7/08—Ferrite rod or like elongated core
Landscapes
- Coils Or Transformers For Communication (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
1,010,311. Aerials. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Jan. 16, 1963 [Jan. 19, 1962], No. 1991/63. Heading H4A. In a U.H.F. ferrite rod aerial wherein a coupling loop 2 and a part of the ferrite rod 1 are enclosed in a longitudinally split sleeve 4, the uniform capacitance existing (i.e. self capacitance) or placed across the split 5 is arranged in conjunction with the inductance of the sleeve 4 to cause the sleeve 4 to be resonant at the average operating frequency of the aerial and to provide improved matching and sensitivity. The length of the ferrite rod is at least five times greater than its diameter and between 65 and 90% of its length is enclosed by the sleeve 4. The capacitance may be provided by lipping the edges of the slit, Figs. 4 and 5. Preferably, only a single turn coupling loop is used and this may be disposed in a circumferential groove in the rod or in a gap between a two-part ferrite rod (Fig. 3, not shown). Alternatively, the coupling loop may comprise a two-wire transmission line, connected to the sleeve as shown in Fig. 4, or a coaxial cable, Fig. 5, with the outer conductor 10 connected to the sleeve 4 at a point diametrically opposite the split, and the inner conductor 11 connected to the sleeve at a point between the split and the entry point of the coaxial cable. Alternately, the feeder may be taken out through an axial hole in the ferrite rod.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL273756 | 1962-01-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1010311A true GB1010311A (en) | 1965-11-17 |
Family
ID=19753544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1991/62A Expired GB1010311A (en) | 1962-01-19 | 1963-01-16 | Improvements in and relating to magnetic dipole aerials |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3267478A (en) |
| AT (1) | AT239863B (en) |
| BE (1) | BE627249A (en) |
| DE (1) | DE1287169B (en) |
| DK (1) | DK103897C (en) |
| ES (1) | ES284243A1 (en) |
| GB (1) | GB1010311A (en) |
| NL (1) | NL273756A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3453634A (en) * | 1966-05-17 | 1969-07-01 | Dictaphone Corp | Loopstick antennas |
| GB1207595A (en) * | 1968-03-25 | 1970-10-07 | Pye Ltd | Aerials |
| US4407000A (en) * | 1981-06-25 | 1983-09-27 | Tdk Electronics Co., Ltd. | Combined dipole and ferrite antenna |
| US5014071A (en) * | 1989-06-30 | 1991-05-07 | Motorola, Inc. | Ferrite rod antenna |
| US5164737A (en) * | 1991-03-28 | 1992-11-17 | Motorola, Inc. | Single turn ferrite rod antenna with mounting structure |
| JP5162648B2 (en) * | 2010-12-01 | 2013-03-13 | デクセリアルズ株式会社 | ANTENNA DEVICE AND COMMUNICATION DEVICE |
| CN103427152B (en) * | 2013-05-15 | 2016-02-17 | 贵州泰格科技有限责任公司 | A kind of resonant antenna of adjustable electric sensibility reciprocal |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2611867A (en) * | 1946-08-31 | 1952-09-23 | Alford Andrew | Slotted winged cylindrical antenna |
| BE515657A (en) * | 1951-11-23 | |||
| DE1046697B (en) * | 1953-09-26 | 1958-12-18 | Heinrich Scheller Dr Ing | Loop antenna with rod-shaped core |
| US2821708A (en) * | 1954-06-01 | 1958-01-28 | Bendix Aviat Corp | Coupling connection for slot antenna |
| FR1141361A (en) * | 1954-08-31 | 1957-09-02 | Improvements to the wave collector | |
| DE1713820U (en) * | 1955-09-07 | 1955-12-29 | Heinrich Pfitzner | FERRITE ROD ANTENNA. |
| US2983919A (en) * | 1957-10-16 | 1961-05-09 | Rca Corp | Tuning means for slot radiator |
-
0
- BE BE627249D patent/BE627249A/xx unknown
- NL NL273756D patent/NL273756A/xx unknown
-
1963
- 1963-01-15 DE DEN22606A patent/DE1287169B/en active Pending
- 1963-01-16 AT AT32263A patent/AT239863B/en active
- 1963-01-16 DK DK20663AA patent/DK103897C/en active
- 1963-01-16 GB GB1991/62A patent/GB1010311A/en not_active Expired
- 1963-01-17 ES ES284243A patent/ES284243A1/en not_active Expired
- 1963-01-18 US US252400A patent/US3267478A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US3267478A (en) | 1966-08-16 |
| ES284243A1 (en) | 1963-03-16 |
| BE627249A (en) | |
| NL273756A (en) | |
| AT239863B (en) | 1965-04-26 |
| DK103897C (en) | 1966-03-07 |
| DE1287169B (en) | 1969-01-16 |
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