GB1311620A - Slot antenna - Google Patents
Slot antennaInfo
- Publication number
- GB1311620A GB1311620A GB4585071A GB4585071A GB1311620A GB 1311620 A GB1311620 A GB 1311620A GB 4585071 A GB4585071 A GB 4585071A GB 4585071 A GB4585071 A GB 4585071A GB 1311620 A GB1311620 A GB 1311620A
- Authority
- GB
- United Kingdom
- Prior art keywords
- slot
- sections
- mast
- wavelength
- radiation
- 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
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
-
- 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
- H01Q11/04—Non-resonant antennas, e.g. travelling-wave antenna with parts bent, folded, shaped, screened or electrically loaded to obtain desired phase relation of radiation from selected sections of the antenna
-
- 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
-
- 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
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
- Details Of Aerials (AREA)
Abstract
1311620 Aerials AMPEX CORP 1 Oct 1971 [12 Oct 1970] 45850/71 Heading H4A An aerial comprises a slot having a length equal to an odd number, greater than one, of half-wavelengths at the operating frequency. A transmission line is connected to the slot at a point along its length, and means are provided for causing all radiation relative to said aerial to be associated only with sections of said slot of like field polarity without significantly affecting the phase velocity of signals as they pass between the said point and all other points along said slot. As described, a single continuous and narrow slot 12, Fig. 1, is formed in a planar sheet 10. A coaxial feed cable 18 is connected at the midpoint of the slot, which has a length of five halfwavelengths at the operating frequency. The central and end half-wavelength sections 12a, 12c, 12e of the slot are of one polarity, whilst the intermediate half-wavelength sections 12b, 12d are of the opposite polarity. U-shaped sheet metal half-wave chokes are provided along the sections 12b, 12d which effectively prevent radiation therefrom in the forward direction 22, while not interfering with power transmission to the sections 12a, 12b. A further half-wave choke 28 over the whole length of the slot prevents any radiation in the backward direction. In a second embodiment (Fig. 6, not shown) co-linearstraight half-wavelength sections of a continuous slot alternate with folded or U-shaped halfwavelength sections. The straight sections are of one polarity and radiate constructively, whilst there is little or no radiation from the folded sections, which are of the opposite polarity. In a third embodiment (Fig. 5, not shown), a transverse slot is interposed between each adjacent pair of half-wavelength sections of a single straight continuous slot. Said transverse slots are symmetrical about the axis of the main slot, and each has an overall length of a half-wavelength. At each intersection, opposite comers are connected by diagonal wires or bars. In this way, all half-wavelength sections of the main slot are made of the same polarity. A fourth embodiment features a radiating structure which is generally similar to that shown in Fig. 1. A continuous slot with a length of five half-wavelengths is defined by the aperture of a choke 52, Figs. 3, 4, and two forward facing chokes 56a, 56d are provided over the halfwavelength sections adjacent the central halfwavelength section 48. The structure is mounted upon a flanged vertical pipe or mast 40, the choke 52 being displaced to form an obtuse angle with the chokes 56 for this purpose, and a bracket 64 being provided. A coaxial fed cable 68 is run inside the mast 40, and is connected to the centre of the slot section 48. Radiation from the aerial is horizontally polarized, and in order to obtain an omni-directional radiation pattern, or one of another required shape, a pair of directors 70, 72 is associated with each radiating section of the slot. These directors are symmetrically arranged at the rear of the mast 40, and each comprises a pair of plate, mesh, or skeleton members 74 mounted on a rod 78 which extends from a bracket on the mast. A fifth embodiment, Fig. 7 (not shown), features a radiating structure similar to that described above with reference to, Fig. 5 (not shown), which is mounted on a vertical mast. The sheet containing the main and transverse slots is folded towards the mast so that it has a generally V-shape, and a coaxial feed cable is connected to the centre of the lowest half-wavelength section of the main slot. Directors are provided, as in the previous embodiment, except that there are common elements, extending along the structure, instead of separate elements for each radiating halfwavelength section of the slot.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7989370A | 1970-10-12 | 1970-10-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1311620A true GB1311620A (en) | 1973-03-28 |
Family
ID=22153478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4585071A Expired GB1311620A (en) | 1970-10-12 | 1971-10-01 | Slot antenna |
Country Status (5)
Country | Link |
---|---|
US (1) | US3757343A (en) |
DE (1) | DE2150792A1 (en) |
FR (1) | FR2110353B1 (en) |
GB (1) | GB1311620A (en) |
ZA (1) | ZA716112B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8624791B2 (en) | 2012-03-22 | 2014-01-07 | Venti Group, LLC | Chokes for electrical cables |
US8803755B2 (en) | 2013-01-10 | 2014-08-12 | Venti Group, LLC | Low passive intermodulation chokes for electrical cables |
US9985363B2 (en) | 2013-10-18 | 2018-05-29 | Venti Group, LLC | Electrical connectors with low passive intermodulation |
CN111180870A (en) * | 2020-01-06 | 2020-05-19 | 武汉虹信通信技术有限责任公司 | Antenna radiation unit, base station antenna and antenna index adjusting method |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3971032A (en) * | 1975-08-25 | 1976-07-20 | Ball Brothers Research Corporation | Dual frequency microstrip antenna structure |
FR2556510B1 (en) * | 1983-12-13 | 1986-08-01 | Thomson Csf | PERIODIC PLANE ANTENNA |
US5276449A (en) * | 1992-09-16 | 1994-01-04 | The Boeing Company | Radar retroreflector with polarization control |
US6624793B1 (en) * | 2002-05-08 | 2003-09-23 | Accton Technology Corporation | Dual-band dipole antenna |
US7009571B2 (en) * | 2003-05-12 | 2006-03-07 | Bwa Technology, Inc. | Method and apparatus for forming symmetrical energy patterns in beam forming antennas |
TWI403026B (en) * | 2009-03-17 | 2013-07-21 | Richwave Technology Corp | Dual frequency band planar micro-strip antenna |
CN101847785B (en) * | 2009-03-27 | 2013-12-18 | 立积电子股份有限公司 | Dual-frequency planar microstrip antenna |
JP5660857B2 (en) * | 2010-11-10 | 2015-01-28 | 富士通テン株式会社 | antenna |
US20140253131A1 (en) * | 2013-03-05 | 2014-09-11 | Ce Liu | Apparatus and Method for Directional Resistivity Measurement While Drilling Using Slot Antenna |
JP6339319B2 (en) * | 2013-04-16 | 2018-06-06 | 日本ピラー工業株式会社 | Microstrip antenna and portable terminal |
US10164439B2 (en) * | 2014-09-05 | 2018-12-25 | Qualcomm Incorporated | Metal back cover with combined wireless power transfer and communications |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA610259A (en) * | 1960-12-13 | Alford Andrew | Slotted cylindrical antennas | |
BE381315A (en) * | 1930-07-21 | |||
DE902510C (en) * | 1941-09-23 | 1954-01-25 | Julius Pintsch K G | Arrangement for generating or transmitting and / or receiving ultra-high frequency electrical oscillations, in particular of the decimeter or centimeter wave length region, preferably with surface radiators |
US2632851A (en) * | 1944-03-23 | 1953-03-24 | Roland J Lees | Electromagnetic radiating or receiving apparatus |
US2665382A (en) * | 1947-10-16 | 1954-01-05 | Smith | Three slot cylindrical antenna |
USRE23943E (en) * | 1953-03-10 | 1955-02-08 | finneburgh | |
US2794184A (en) * | 1953-07-21 | 1957-05-28 | Rca Corp | Multiple resonant slot antenna |
US2807019A (en) * | 1956-03-02 | 1957-09-17 | Rca Corp | Omni-directional long slot antenna |
-
1970
- 1970-10-12 US US00079893A patent/US3757343A/en not_active Expired - Lifetime
-
1971
- 1971-09-13 ZA ZA716112A patent/ZA716112B/en unknown
- 1971-10-01 GB GB4585071A patent/GB1311620A/en not_active Expired
- 1971-10-11 FR FR7136421A patent/FR2110353B1/fr not_active Expired
- 1971-10-12 DE DE19712150792 patent/DE2150792A1/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8624791B2 (en) | 2012-03-22 | 2014-01-07 | Venti Group, LLC | Chokes for electrical cables |
US8803755B2 (en) | 2013-01-10 | 2014-08-12 | Venti Group, LLC | Low passive intermodulation chokes for electrical cables |
US9985363B2 (en) | 2013-10-18 | 2018-05-29 | Venti Group, LLC | Electrical connectors with low passive intermodulation |
CN111180870A (en) * | 2020-01-06 | 2020-05-19 | 武汉虹信通信技术有限责任公司 | Antenna radiation unit, base station antenna and antenna index adjusting method |
Also Published As
Publication number | Publication date |
---|---|
DE2150792A1 (en) | 1972-04-20 |
FR2110353B1 (en) | 1974-09-27 |
ZA716112B (en) | 1972-05-31 |
FR2110353A1 (en) | 1972-06-02 |
US3757343A (en) | 1973-09-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1311620A (en) | Slot antenna | |
US2364371A (en) | Double polarization feed for horn antennas | |
US5039994A (en) | Dipole arrays | |
GB893889A (en) | Improvements in or relating to wide frequency band aerials | |
US2539433A (en) | Circularly polarized antenna | |
US2611867A (en) | Slotted winged cylindrical antenna | |
US2290800A (en) | Antenna | |
GB539602A (en) | Improvements in aerial arrays particularly for short-wave communication | |
US3790950A (en) | Antenna array for minimizing co-channel interference | |
GB635343A (en) | Improvements in radio antennas | |
US3205499A (en) | Dual polarized horn antenna | |
GB1182724A (en) | Combined Radar Antenna System | |
US2485138A (en) | High-gain antenna system | |
US2267613A (en) | Broadcast antenna | |
GB558852A (en) | Improvements in directional aerial systems | |
GB801885A (en) | Improvements in or relating to directional aerials for the transmission or reception of electromagnetic waves | |
US2799017A (en) | Slotted cylindrical antennas | |
US1908595A (en) | Aerial system for use in wireless telegraphy and telephony | |
US2267945A (en) | Long wire antenna | |
US2703840A (en) | Multifrequency antenna array | |
US3087157A (en) | Composite antenna of the retarded surface wave type | |
GB1142787A (en) | Improvements in or relating to aerial systems | |
US1964190A (en) | Antenna | |
US2778015A (en) | Antenna | |
US2194554A (en) | Directive antenna system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |