GB2227609A - Double aerial [daerial] - Google Patents

Double aerial [daerial] Download PDF

Info

Publication number
GB2227609A
GB2227609A GB8901944A GB8901944A GB2227609A GB 2227609 A GB2227609 A GB 2227609A GB 8901944 A GB8901944 A GB 8901944A GB 8901944 A GB8901944 A GB 8901944A GB 2227609 A GB2227609 A GB 2227609A
Authority
GB
United Kingdom
Prior art keywords
aerial
dish
dish aerial
reflecting
signals
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.)
Withdrawn
Application number
GB8901944A
Other versions
GB8901944D0 (en
Inventor
David James George Martin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB8901944A priority Critical patent/GB2227609A/en
Publication of GB8901944D0 publication Critical patent/GB8901944D0/en
Publication of GB2227609A publication Critical patent/GB2227609A/en
Withdrawn legal-status Critical Current

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
    • H01Q19/10—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 reflecting surfaces
    • H01Q19/12—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 reflecting surfaces wherein the surfaces are concave
    • H01Q19/17—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 reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/007—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing device

Abstract

A reflecting dish aerial 10 with two sensors 11 at focii enables two electromagnetic signal transmissions to be received without physical adjustment of the dish once installed and aligned. The aerial may be used to receive television signals from satellites. <IMAGE>

Description

DOUBLE REFLECTING AERIAL ( Daerial ) This invention relates to an electromagnetic aerial dish capable of receiving signals from more than one direction without moving mechanicaly or sweeping electronically.
Receiving dish aerials for electromagnetic radiation are well known, comprising a curved relecting surface with a sensing element at the "fbcus". For a dish with a regular concave curved surface the focus is at half the radius of the curvature above the surface. To receive signals these dish aerials have to be pointed accurately towards the source of the electromagnetic radiation.
In the case of a communication satellite such as those for Television, the source is in geostationary orbit above the equator. This means that a receiving dish would need to be depressed from the vertical by an angle equal to the latitude of the location where reception is required.
To receive signals from two satellites at different longitudes a steerable dish or two fixed dishes are required.
According to the present invention mounting is provided for two sensing elements on a supporting bar. By manufacturing the aerial to give the correct geometrical relationship it is possible to receive signals from more than one source without mechanical or electronic adjustment once the aerial is correctly aligned and adjusted.
A specific description of the invention is given with reference the accompanying diagrams.
Referring to the drawing, the aerial comprises a reflecting dish 10 in front of which are mounted two or more sensors 11 on a frame 12 which provides both support and adjustability. Provision is made to rotate the dish and to adjust its positioning three dimensionally ( three adjustments are provided at right angles to each other ). By suitable selection of its siting, it is therefore possible to position the dish to point in any direction.
The aerial can be mounted on a wall as shown in Fig 1 . It can be secured in an elevated position using the securing bolts with serrated washers 13. The dish can be rotated using the central securing bolt 14, as shown in Fig 2 and swept across the horizon using the vertical securing bolts 16 on the mounting brackets 17.
The sensors are secured to the horizontal bar by screws 18 as shown in fig 3, and provision is made to allow for manufacturing tolerances.
The dish is secured to the frame as shown in Fig 4.

Claims (10)

1. A reflecting dish aerial able to receive electromagnetic signals from more than one direction without mechanical or electronic steering.
2. A reflecting dish aerial as claimed in claim 1 with two or more defined directions from which electromagnetic signals can be received.
3. A reflecting dish aerial which can be positioned to receive electromagnetic signals from two or more directions without further adjustment after installation.
4. A reflecting dish aerial as claimed in any of the preceeding claims used to provide signals for domestic Television.
5. A reflecting dish aerial as claimed in any of the preceeding claims used to provide Television pictures or sound.
6. A reflecting dish aerial modified to be substantially as described herein for use in the electromagnetic spectrum at freqencies below that of light.
7. A reflecting dish aerial modified to be substantially as described herein for use at radio frequencies used for Television.
8. A dish aerial substantially as described herein used for domestic reception.
9. A dish aerial substantially as described herein used to receive signals from satellites.
10. A dish aerial substantially as described herein used to receive electromagnetic radiation of wavelengths greater than that of light.
GB8901944A 1989-01-30 1989-01-30 Double aerial [daerial] Withdrawn GB2227609A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8901944A GB2227609A (en) 1989-01-30 1989-01-30 Double aerial [daerial]

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8901944A GB2227609A (en) 1989-01-30 1989-01-30 Double aerial [daerial]

Publications (2)

Publication Number Publication Date
GB8901944D0 GB8901944D0 (en) 1989-03-22
GB2227609A true GB2227609A (en) 1990-08-01

Family

ID=10650806

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8901944A Withdrawn GB2227609A (en) 1989-01-30 1989-01-30 Double aerial [daerial]

Country Status (1)

Country Link
GB (1) GB2227609A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992007394A1 (en) * 1990-10-18 1992-04-30 D-Mac International Limited Satellite antenna
FR2677815A1 (en) * 1991-06-14 1992-12-18 Chapu Claude Reception of three satellites on a fixed parabola
EP0546913A1 (en) * 1991-12-11 1993-06-16 Etablissement Public Télédiffusion de France Antenna with fixed reflector for plural beams of communication systems
FR2724058A1 (en) * 1994-08-23 1996-03-01 Servimat Sarl Satellite converter attachment device
WO2009050416A2 (en) * 2007-10-16 2009-04-23 Global View Systems Ltd Mount structure for transmitter/receiver devices

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914768A (en) * 1974-01-31 1975-10-21 Bell Telephone Labor Inc Multiple-beam Cassegrainian antenna
US4298877A (en) * 1979-01-26 1981-11-03 Solar Energy Technology, Inc. Offset-fed multi-beam tracking antenna system utilizing especially shaped reflector surfaces
US4355314A (en) * 1980-11-28 1982-10-19 Bell Telephone Laboratories, Incorporated Wide-field-of-view antenna arrangement
GB2130804A (en) * 1982-11-17 1984-06-06 Mitsubishi Electric Corp Dual reflector antenna system
EP0253425A2 (en) * 1986-07-18 1988-01-20 Siemens Telecomunicazioni S.P.A. Angular-diversity radiating system for tropospheric-scatter radio links
EP0275062A2 (en) * 1987-01-12 1988-07-20 Nec Corporation Multibeam antenna

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914768A (en) * 1974-01-31 1975-10-21 Bell Telephone Labor Inc Multiple-beam Cassegrainian antenna
US4298877A (en) * 1979-01-26 1981-11-03 Solar Energy Technology, Inc. Offset-fed multi-beam tracking antenna system utilizing especially shaped reflector surfaces
US4355314A (en) * 1980-11-28 1982-10-19 Bell Telephone Laboratories, Incorporated Wide-field-of-view antenna arrangement
GB2130804A (en) * 1982-11-17 1984-06-06 Mitsubishi Electric Corp Dual reflector antenna system
EP0253425A2 (en) * 1986-07-18 1988-01-20 Siemens Telecomunicazioni S.P.A. Angular-diversity radiating system for tropospheric-scatter radio links
EP0275062A2 (en) * 1987-01-12 1988-07-20 Nec Corporation Multibeam antenna

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992007394A1 (en) * 1990-10-18 1992-04-30 D-Mac International Limited Satellite antenna
FR2677815A1 (en) * 1991-06-14 1992-12-18 Chapu Claude Reception of three satellites on a fixed parabola
EP0546913A1 (en) * 1991-12-11 1993-06-16 Etablissement Public Télédiffusion de France Antenna with fixed reflector for plural beams of communication systems
FR2685131A1 (en) * 1991-12-11 1993-06-18 Telediffusion Fse FIXED REFLECTOR RECEPTION ANTENNA FOR MULTIPLE SATELLITE BEAMS.
FR2724058A1 (en) * 1994-08-23 1996-03-01 Servimat Sarl Satellite converter attachment device
WO2009050416A2 (en) * 2007-10-16 2009-04-23 Global View Systems Ltd Mount structure for transmitter/receiver devices
WO2009050416A3 (en) * 2007-10-16 2009-07-02 Global View Systems Ltd Mount structure for transmitter/receiver devices

Also Published As

Publication number Publication date
GB8901944D0 (en) 1989-03-22

Similar Documents

Publication Publication Date Title
US5657031A (en) Earth station antenna system
US4644365A (en) Adjustable antenna mount for parabolic antennas
CA2206647A1 (en) Composite rooftop antenna for terrestrial and satellite reception
US11258172B2 (en) Multi-beam shaped reflector antenna for concurrent communication with multiple satellites
GB1603657A (en) Systems for the transmission and/or reception of electromagnetic waves
US5434586A (en) Multibeam antenna for receiving satellite waves
US4875052A (en) Adjustable orientation apparatus with simultaneous adjustment of polar and declination angles
GB2227609A (en) Double aerial [daerial]
US4689635A (en) Apparatus for orientating TV antennas for satellite reception
EP0997803B1 (en) Satellite terminal antenna installation
US6366252B1 (en) Method and apparatus for mounting an auxiliary antenna to a reflector antenna
US6127982A (en) Apparatus and method for processing satellite and terrestrial signals
US4316195A (en) Rotating dual frequency range antenna system
WO1988010521A1 (en) Collapsible receiving antenna
WO1992007394A1 (en) Satellite antenna
GB2225902A (en) Dish antenna
JPH0669722A (en) Multi-beam antenna
GB2231445A (en) Aerial system
RU2054216C1 (en) Aerial
JP2567916Y2 (en) Dual beam antenna
JPH0728721Y2 (en) Polarization selection device for primary radiator
JPS641767Y2 (en)
GB2278020A (en) Antenna
JP2531780Y2 (en) Primary radiator support device
RU2120162C1 (en) Multibeam lens antenna

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)