GB619561A - Improvements in and relating to radio antennas - Google Patents
Improvements in and relating to radio antennasInfo
- Publication number
- GB619561A GB619561A GB34045/46A GB3404546A GB619561A GB 619561 A GB619561 A GB 619561A GB 34045/46 A GB34045/46 A GB 34045/46A GB 3404546 A GB3404546 A GB 3404546A GB 619561 A GB619561 A GB 619561A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cavity
- aperture
- radiators
- radiator
- fed
- 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
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/06—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
- H01Q19/08—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens for modifying the radiation pattern of a radiating horn in which it is located
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/22—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using a secondary device in the form of a single substantially straight conductive element
Abstract
619,561. Radio aerials. RUMSEY, V. H. Nov. 16, 1946, No. 34045. Convention date, June 5. [Class 40 (vii)] A radiator comprises an aperture in a cavity formed of conductive material with antenna means mounted inside the cavity and fed from outside and includes parasitically-excited radiating means associated with the aperture and arranged so that the input impedance to the antenna means is substantially constant over a band of frequencies. An array of aperture radiators (Fig. 1) have their cavities formed by a base sheet 101, a back sheet 122 and top sheet 121, and partitions 102; each cavity is approximately a wavelength long. Extensions 104 and 103 minimize back radiation. The radiators may be fed in phase by branched transmission lines or the end radiators may be energized less strongly than the centre ones, Fig. 2 (not shown). If it is desired to feed the elements of the array out of phase and with differing magnitudes, this can readily be arranged as the interaction of the radiators one on another is negligible. Radiation from each aperture has vertical polarization of the electric field and the conductive struts at the midpoint of each aperture compel operation in the proper mode. The antenna element 105 which excites the cavity is midway between the end plates and about a quarter-wavelength in front of the back plate. It is fed from the unbalanced feeder 113, 115, the outer of which 113 is in contact with the cavity and the inner of which 115 passes through insulators 106, 119 and makes contact with the centre portion of hollow tubular radiator 105. An impedance match between the transmission line and the radiator depends on the reflections inside the cavity and normally the matching is critical with frequency. However, parasitic radiators 108 serve to match the radiator over a band of frequencies by acting as capacitive loading stubs which provide shunt reactance across the wave-guide. It is stated that elements 108 not only broaden the frequency band, but serve to make any frequency matching device between antenna 105 and its transmission line necessary.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US674437A US2615132A (en) | 1946-06-05 | 1946-06-05 | Directive broad band slot antenna system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB619561A true GB619561A (en) | 1949-03-10 |
Family
ID=24706595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34045/46A Expired GB619561A (en) | 1946-06-05 | 1946-11-16 | Improvements in and relating to radio antennas |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2615132A (en) |
| GB (1) | GB619561A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3124801A (en) * | 1964-03-10 | x x x x x | ||
| US2817084A (en) * | 1953-08-05 | 1957-12-17 | Hughes Aircraft Co | Broadband antenna |
| US2973518A (en) * | 1957-09-25 | 1961-02-28 | Jack H Jensen | Corner reflector antenna |
| US4533884A (en) * | 1983-02-23 | 1985-08-06 | Hughes Aircraft Company | Coaxial line to waveguide adapter |
| US5714964A (en) * | 1995-11-07 | 1998-02-03 | Condor Systems, Inc. | Horned interferometer antenna apparatus |
| US6864851B2 (en) * | 2002-09-26 | 2005-03-08 | Raytheon Company | Low profile wideband antenna array |
| RU2727348C1 (en) * | 2019-04-26 | 2020-07-21 | Акционерное общество "Всероссийский научно-исследовательский институт радиотехники" | Stripline slot linear antenna array |
| IT202100002273A1 (en) * | 2021-02-03 | 2022-08-03 | Free Space SRL | COMPACT AND BROADBAND SLOT ANTENNA WITH CAVITY. |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE696986C (en) * | 1934-11-21 | 1940-10-03 | Julius Pintsch Kom Ges | Ultra short wave group transmitters |
| US2283935A (en) * | 1938-04-29 | 1942-05-26 | Bell Telephone Labor Inc | Transmission, radiation, and reception of electromagnetic waves |
| US2275646A (en) * | 1939-07-18 | 1942-03-10 | Rca Corp | Antenna |
| US2286839A (en) * | 1939-12-20 | 1942-06-16 | Bell Telephone Labor Inc | Directive antenna system |
| US2408435A (en) * | 1941-03-01 | 1946-10-01 | Bell Telephone Labor Inc | Pipe antenna and prism |
| US2415807A (en) * | 1942-01-29 | 1947-02-18 | Sperry Gyroscope Co Inc | Directive electromagnetic radiator |
| US2414266A (en) * | 1942-06-27 | 1947-01-14 | Rca Corp | Antenna |
| US2400867A (en) * | 1942-06-27 | 1946-05-21 | Rca Corp | Antenna |
| US2516921A (en) * | 1946-04-29 | 1950-08-01 | Farnsworth Res Corp | Electrostatic device for measuring radiant power |
-
1946
- 1946-06-05 US US674437A patent/US2615132A/en not_active Expired - Lifetime
- 1946-11-16 GB GB34045/46A patent/GB619561A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2615132A (en) | 1952-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2455403A (en) | Antenna | |
| GB680512A (en) | Antenna assembly | |
| US3582951A (en) | Helmet antenna | |
| GB709351A (en) | Radio frequency antennae | |
| US2820965A (en) | Dual polarization antenna | |
| GB619561A (en) | Improvements in and relating to radio antennas | |
| GB635343A (en) | Improvements in radio antennas | |
| GB580569A (en) | Improvements in aerial systems | |
| IT8320225A1 (en) | Biconical omnidirectional antenna | |
| GB1338753A (en) | Multimode antenna | |
| US2485457A (en) | Antenna system | |
| US2512137A (en) | Antenna | |
| GB1182724A (en) | Combined Radar Antenna System | |
| US2459768A (en) | Apparatus for the radiation or reception of electromagnetic waves | |
| GB712265A (en) | Improvements in or relating to aerials | |
| US2691730A (en) | Wide band antenna | |
| US2962716A (en) | Antenna array | |
| GB874656A (en) | Improvements in or relating to cross polarized dual feeds | |
| US2860339A (en) | Ultra-high frequency antenna unit | |
| GB600327A (en) | Improvement in directive antennae | |
| GB654935A (en) | Improvements in and relating to high frequency antennae | |
| Chin et al. | LTCC differential-fed patch antennas with rat-race feeding structures | |
| GB1105354A (en) | Improvements in radio antennas | |
| US2552146A (en) | Duplex directive antenna system | |
| GB579778A (en) | Improvements relating to radio antennae |