GB624091A - Antenna - Google Patents
AntennaInfo
- Publication number
- GB624091A GB624091A GB20345/46A GB2034546A GB624091A GB 624091 A GB624091 A GB 624091A GB 20345/46 A GB20345/46 A GB 20345/46A GB 2034546 A GB2034546 A GB 2034546A GB 624091 A GB624091 A GB 624091A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conductor
- box
- cavity
- wall
- transmission line
- 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
- 239000004020 conductor Substances 0.000 abstract 7
- 230000005540 biological transmission Effects 0.000 abstract 3
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 239000004793 Polystyrene Substances 0.000 abstract 1
- 239000003989 dielectric material Substances 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 229920002223 polystyrene Polymers 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/04—Coaxial resonators
-
- 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
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/286—Adaptation for use in or on aircraft, missiles, satellites, or balloons substantially flush mounted with the skin of the craft
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/18—Resonant slot antennas the slot being backed by, or formed in boundary wall of, a resonant cavity ; Open cavity antennas
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Waveguide Aerials (AREA)
Abstract
624,091. Aerials; coupling arrangements. RADIO CORPORATION OF AMERICA. July 8, 1946, No. 20345. Convention date, Aug. 25, 1945. [Classes 40 (v) and 40 (vii)] [Also in Group XL (b)] An ultra-short-wave aerial comprises a resonant cavity formed by a quadrangular conductive base, one wall of which is provided with an elongated slot of a width -small compared with the width of the wall transverse to which and within the box is positioned a conductor for energy transfer between the aerial and associated apparatus. In one arrangement, suitable for mounting flush with the exterior surface of e.g. an aeroplane, an elongated slot 20, Figs. 1 and 2, is formed in the front wall 12 of a conductive box 10 and energy transfer between the aerial and transmitting or receiving apparatus is effected by means of a transmission line TL connected through a socket 52 to one end of a conductor 60 mounted transversely to the slot 20, the other end of conductor 60 being connected through a second socket 52 to a short-circuited stub 73. Variation of the coupling between the cavity and conductor 60 is effected by varying the distance between 60 and the rear wall of the cavity and for this purpose conductor 60 is eccentrically mounted at 62, 63 so that the necessary variation is brought about by rotation of 60. The ends of the slot are isolated by means of transverse slots 22, 24 and the cavity is tuned by adjustment of capacity plates 26, 28, 30. A window 44 of dielectric material, e.g. polystyrene, carried by a bezal member 45, prevents the entry of dust, moisture, &c. Band-pass curves, Fig. 3 (not shown), indicate that the standing wave ratio is less than 1.8 over a frequency range extending from 422 mc/s. to 478 mc/s. In an alternative arrangement, Fig. 4 (not shown), the conductor 60, the sockets 52 and the stub 73 are replaced by a coaxial extension of one of the sockets 52 across the box 10 and the inner conductor of the extension is provided with a capacity plate adapted to co-operate with a similar plate connected to the side wall of the box. In a further arrangement, Figs. 5 and 6, the transmission line is coupled to the cavity by means of a curved and tapered tongue 90, to the apex of which the transmission line is connected and the broad base edge of which is connected with the side wall 16 along its entire length. By suitably selecting the taper and curvature of the tongue 90, a constant input impedance results over a relatively wide frequency band. In another arrangement, Fig. 7 (not shown), the tongue is U-shaped in cross-section and the base portion is connected with the rear wall of the box.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US612685A US2573460A (en) | 1945-08-25 | 1945-08-25 | Antenna |
US180108A US2629051A (en) | 1945-08-25 | 1950-08-18 | Antenna |
Publications (1)
Publication Number | Publication Date |
---|---|
GB624091A true GB624091A (en) | 1949-05-27 |
Family
ID=26875994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20345/46A Expired GB624091A (en) | 1945-08-25 | 1946-07-08 | Antenna |
Country Status (4)
Country | Link |
---|---|
US (1) | US2629051A (en) |
FR (1) | FR932141A (en) |
GB (1) | GB624091A (en) |
NL (1) | NL71623C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2719205A1 (en) * | 1976-05-03 | 1977-11-17 | Raytheon Co | ANTENNA SYSTEM, IN PARTICULAR FOR IFF RADAR SYSTEMS |
DE19624745A1 (en) * | 1996-06-21 | 1998-01-02 | Sican F & E Gmbh Sibet | Directional antenna for microwave radiotelephones |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2770801A (en) * | 1952-07-23 | 1956-11-13 | Thompson Prod Inc | Corner reflector type antenna |
US2821708A (en) * | 1954-06-01 | 1958-01-28 | Bendix Aviat Corp | Coupling connection for slot antenna |
US2932731A (en) * | 1956-12-03 | 1960-04-12 | Babcock Radio Engineering Inc | Spark initiated pulse generator |
US2942263A (en) * | 1957-02-25 | 1960-06-21 | Gen Dynamics Corp | Antennas |
US2948895A (en) * | 1957-06-21 | 1960-08-09 | Rca Corp | Slotted coupling device for waveguide |
US2983919A (en) * | 1957-10-16 | 1961-05-09 | Rca Corp | Tuning means for slot radiator |
US3252116A (en) * | 1963-12-17 | 1966-05-17 | Rca Corp | Combined tuning and stabilization means for cavity resonators |
US3460149A (en) * | 1966-08-12 | 1969-08-05 | Us Navy | Phase-controlled slot antenna |
US5673054A (en) * | 1991-05-09 | 1997-09-30 | Seiko Epson Corporation | Antenna and miniature portable wireless transceiver |
US5589840A (en) * | 1991-11-05 | 1996-12-31 | Seiko Epson Corporation | Wrist-type wireless instrument and antenna apparatus |
US5365244A (en) * | 1993-01-29 | 1994-11-15 | Westinghouse Electric Corporation | Wideband notch radiator |
US5532705A (en) * | 1993-03-17 | 1996-07-02 | Seiko Epson Corporation | Wrist-mounted-type antenna device and apparatus having the antenna device |
US5757326A (en) * | 1993-03-29 | 1998-05-26 | Seiko Epson Corporation | Slot antenna device and wireless apparatus employing the antenna device |
JP3417083B2 (en) * | 1994-10-04 | 2003-06-16 | セイコーエプソン株式会社 | Portable radio |
CN102136616B (en) * | 2010-11-23 | 2013-09-04 | 深圳市大富科技股份有限公司 | Cavity filter and communication equipment |
US11404773B1 (en) * | 2021-06-10 | 2022-08-02 | United States Of America As Represented By The Secretary Of The Air Force | Additively-manufactured omnidirectional antenna |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2210636A (en) * | 1937-09-18 | 1940-08-06 | Bell Telephone Labor Inc | Guided wave transmission |
US2460286A (en) * | 1938-01-17 | 1949-02-01 | Univ Leland Stanford Junior | Radiating electromagnetic resonator |
US2407068A (en) * | 1942-09-15 | 1946-09-03 | Gen Electric | Wave transmitting system |
FR964838A (en) * | 1943-08-12 | 1950-08-25 | ||
US2483337A (en) * | 1943-11-27 | 1949-09-27 | Philco Corp | Grid-pulsed cavity oscillator |
US2425352A (en) * | 1944-08-26 | 1947-08-12 | Rca Corp | Ultra high frequency electron discharge device system |
US2438735A (en) * | 1944-10-02 | 1948-03-30 | Gen Electric | High-frequency wave transmitting apparatus |
-
0
- NL NL71623D patent/NL71623C/xx active
-
1946
- 1946-07-08 GB GB20345/46A patent/GB624091A/en not_active Expired
- 1946-08-10 FR FR932141D patent/FR932141A/en not_active Expired
-
1950
- 1950-08-18 US US180108A patent/US2629051A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2719205A1 (en) * | 1976-05-03 | 1977-11-17 | Raytheon Co | ANTENNA SYSTEM, IN PARTICULAR FOR IFF RADAR SYSTEMS |
DE19624745A1 (en) * | 1996-06-21 | 1998-01-02 | Sican F & E Gmbh Sibet | Directional antenna for microwave radiotelephones |
Also Published As
Publication number | Publication date |
---|---|
FR932141A (en) | 1948-03-12 |
US2629051A (en) | 1953-02-17 |
NL71623C (en) |
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