CN1055448A - Microwave antenna unit - Google Patents
Microwave antenna unit Download PDFInfo
- Publication number
- CN1055448A CN1055448A CN 91101905 CN91101905A CN1055448A CN 1055448 A CN1055448 A CN 1055448A CN 91101905 CN91101905 CN 91101905 CN 91101905 A CN91101905 A CN 91101905A CN 1055448 A CN1055448 A CN 1055448A
- Authority
- CN
- China
- Prior art keywords
- antenna
- parts
- mentioned
- microwave
- reflector
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
- H01Q17/001—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems for modifying the directional characteristic of an aerial
-
- 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
- H01Q1/125—Means for positioning
- H01Q1/1264—Adjusting different parts or elements of an aerial unit
-
- 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
- H01Q19/13—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 being a single radiating element, e.g. a dipole, a slot, a waveguide termination
Abstract
The present invention is a kind of microwave antenna unit.Microwave antenna unit comprises a dish-shaped reflector and an antenna.When propagation conditions is good, provide the very wide thereby very difficult realization of the positional angle range of signal maximum accurately to aim at.The present invention be intended to need not any complexity instrument promptly realize in these cases accurately aiming at.Be provided with microwave attenuation parts 4 between reflector 1 and antenna 2,4 pairs of microwave energies from dish-shaped reflector 1 directive antenna 2 of these parts are decayed, and maximum range is narrowed down.Parts 4 can be simulated the situation when hanging down high field (when raining heavyly following).
Description
The present invention relates to one and have reflector and a microwave antenna unit that is used for the microwave energy of receiving is converted to the teledish of the signal of telecommunication.This so-called dish shape antenna is used for receiving TV or the voice signal of frequency range in 10-20GHz that satellite sends specially.In order to carry out correct reception, must do very careful and accurate the aligning to teledish in the horizontal and vertical directions and adjust.This aligning adjustment is generally undertaken by the position of adjusting teledish, makes that the output signal of antenna is a maximum.
In above-mentioned frequency range, field intensity and propagation conditions have much relations, the weather of superelevation humidity (like rain or mist) can make the big high attenuation of field intensity, and under fair-weather situation, just can receive higher electric field strength.
When propagation conditions was better, the signal that provides at very wide position angle internal antenna can both reach maximum, and therefore accurately centring is just relatively more difficult.Though also have instrument can help the people to realize accurately aiming in this situation that reaches peaked angular range broad, these instruments are very valuable, are unavailable in many instances.
Therefore, even purpose of the present invention is exactly when better causing the maximum range broad because of propagation conditions, also need not to realize the accurate aligning of teledish by any complex instrument.
According to the present invention, between reflector and antenna, removably be provided with microwave attenuation parts.
The applicant finds, parts of very simply making with the microwave attenuation material are set between reflector and antenna, the microwave energy that the antenna of just decaying in the mode of anticipation receives, thereby the influence to received signal of simulation (for example) heavy rain.By using above-mentioned parts to reduce field intensity on the antenna artificially, the maximum with respect to the antenna input signal at aerial position angle is diminished, so just can realize the correct aligning of teledish.The solution that provides of the present invention is quite simple, and reason is only to use very cheap and simple parts, need not to measure maximum and find out the maximum center with complicated instrument.No matter therefore the present invention can realize the correct aligning of teledish under weather and propagation conditions situation how.
Above-mentioned parts are preferably by glass, plastics pottery or its combination.These materials have our desirable attenuation characteristic in above-mentioned microwave receiving frequency range (10-20GHz).
In embodiment of the present invention, above-mentioned parts rotatably are fixed on the above-mentioned antenna element, like this it can move on between reflector and the antenna within the signalling channel and outside diverse location on.Give an example, the signal reception that signalling channel realizes the best is adjusted and shifted out to these parts in order to move into to aim in the signalling channel, can fix on the antenna element by hinges fixing.According to special propagation conditions and field intensity, above-mentioned parts can be on the diverse location in forwarding above-mentioned position to, thereby obtains different attenuations.
The size of these parts and the selection of material can be chosen to like this, make it that the decay of (for example) 6db can be provided exactly.These parts can also be loaded onto the device that it is installed and removed repeatedly.This device belongs to prior art, and (for one thing) is as so-called quick compactor (snap-in).
In order to make the people understand the present invention better, the form with demonstration example is described now, in the description with reference to accompanying drawing unique among the application.There is shown a teledish that is used to receive microwave.
There is shown a teledish unit, comprise a reflector 1, antenna 2 is fixed on the reflector 1 by three support arms 3.Antenna 2 comprises a transducer that is used for the microwave energy of receiving is converted to the signal of telecommunication, and the above-mentioned signal of telecommunication can obtain from output 6.Between antenna 2 and reflector 1, microwave attenuation parts 4 are by suitable device such as clamping device, screw, and compactor or magnet or the like are fixed on the support arm 3 fast.It is plate shaped that parts 4 are circle, can be made by glass plastic or pottery.4 pairs of microwave energies from reflector 1 directive antenna 2 on direction 5 of above-mentioned parts are decayed.By this device, the maximum with respect to the position angle of antenna element that obtains at port 6 places can diminish, thereby can make antenna element realize accurate aligning in the horizontal and vertical directions.
Parts 4 can fix on the support arm 3 by hinges fixing, and like this, it can move into signalling channel and aim at adjustment, shift out signalling channel and carry out zero-decrement correct reception.Parts 4 also can constitute one by welding or with support arm 3, make a member parts of total.Use parts 4 to finish to aim at adjust after, can the artificially be pulled down from support arm 3 by parts 4, throw away or adjustment process afterwards in use.
Claims (9)
1, have a reflector and a dish-shaped microwave antenna unit that is used for the microwave energy that receives is converted to the signal of telecommunication, it is characterized in that: microwave attenuation parts removably are arranged between the above-mentioned reflector and antenna.
2, according to the antenna of claim 1, it is characterized in that: above-mentioned parts are made by glass, plastics and/or ceramic wafer material.
3, according to the antenna of claim 1, it is characterized in that: above-mentioned parts rotatably are fixed on the above-mentioned antenna, like this, it can move on within above-mentioned reflector and the signal path between the antenna and outside diverse location on.
4, according to the antenna of claim 1, it is characterized in that: above-mentioned parts fix on the above-mentioned antenna by hinges fixing.
5, according to the antenna of claim 1, it is characterized in that: above-mentioned parts can forward different positions to obtain different attenuations.
6, according to the antenna of claim 1, it is characterized in that: above-mentioned parts are connected on the above-mentioned antenna by quick compactor.
7, according to the antenna of claim 1, it is characterized in that: be subjected to the attenuation of the signal of above-mentioned component affects to be approximately 6db.
8,, it is characterized in that these parts are fixed to a fixture on the microwave antenna according to the parts of claim 1.
9,, it is characterized in that it is made by the material with suitable microwave attenuation characteristics according to the parts of claim 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB909006752A GB9006752D0 (en) | 1990-03-27 | 1990-03-27 | Microwave antenna unit |
| GB9006752.1 | 1990-03-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1055448A true CN1055448A (en) | 1991-10-16 |
Family
ID=10673279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91101905 Pending CN1055448A (en) | 1990-03-27 | 1991-03-27 | Microwave antenna unit |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0449107A3 (en) |
| JP (1) | JPH05114814A (en) |
| CN (1) | CN1055448A (en) |
| GB (2) | GB9006752D0 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0997977A1 (en) * | 1998-10-27 | 2000-05-03 | TRT Lucent Technologies (SA) | Radio link attenuator for an integrated antenna adapter terminal |
| EP0997976A1 (en) * | 1998-10-27 | 2000-05-03 | TRT Lucent Technologies (SA) | Attenuator for attenuation of a radio link for a terminal adaptor with integrated antenna |
| US6816739B1 (en) | 2000-03-03 | 2004-11-09 | Alcatel Canada Inc. | Radio system attenuator for an antenna |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1326210A (en) * | 1969-09-16 | 1973-08-08 | Kokusai Denshin Denwa Co Ltd | Antenna using at least one reflector |
| FR2180585B1 (en) * | 1972-04-21 | 1974-12-20 | Thomson Csf | |
| DE2947910C2 (en) * | 1979-11-28 | 1982-05-27 | Siemens AG, 1000 Berlin und 8000 München | Cassegrain antenna |
| DE2947987C2 (en) * | 1979-11-28 | 1982-03-04 | Siemens AG, 1000 Berlin und 8000 München | Cassegrain antenna |
| US4410892A (en) * | 1981-05-26 | 1983-10-18 | Andrew Corporation | Reflector-type microwave antennas with absorber lined conical feed |
| EP0140598B1 (en) * | 1983-10-17 | 1989-03-01 | Andrew Corporation | Horn-reflector microwave antennas with absorber lined conical feed |
| US5317328A (en) * | 1984-04-02 | 1994-05-31 | Gabriel Electronics Incorporated | Horn reflector antenna with absorber lined conical feed |
| JPS612432A (en) * | 1984-06-14 | 1986-01-08 | Mitsubishi Electric Corp | Receiving device |
-
1990
- 1990-03-27 GB GB909006752A patent/GB9006752D0/en active Pending
-
1991
- 1991-03-21 EP EP19910104405 patent/EP0449107A3/en not_active Withdrawn
- 1991-03-26 JP JP3061693A patent/JPH05114814A/en active Pending
- 1991-03-27 CN CN 91101905 patent/CN1055448A/en active Pending
- 1991-03-27 GB GB9106554A patent/GB2244600A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05114814A (en) | 1993-05-07 |
| GB9006752D0 (en) | 1990-05-23 |
| EP0449107A2 (en) | 1991-10-02 |
| EP0449107A3 (en) | 1991-10-30 |
| GB9106554D0 (en) | 1991-05-15 |
| GB2244600A (en) | 1991-12-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |