Omt type broadband multiband transmission-reception coupler-separator for RF frequency telecommuncations antennas

A technology of couplers and splitters, used in waveguide-type devices, electrical components, circuits, etc.

Inactive Publication Date: 2010-03-31
THALES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The OMT can only propagate narrow band

Method used

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  • Omt type broadband multiband transmission-reception coupler-separator for RF frequency telecommuncations antennas
  • Omt type broadband multiband transmission-reception coupler-separator for RF frequency telecommuncations antennas
  • Omt type broadband multiband transmission-reception coupler-separator for RF frequency telecommuncations antennas

Examples

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Embodiment Construction

[0014] The invention is described below with reference to three simplified examples of couplers, but it should be clearly understood that the invention is not limited to these examples and that the bodies of these couplers have a large number of other profiles, which are generally defined in terms of variations according to polynomial rules , decreasing gradually from the port with the largest cross-section to the port with the smallest cross-section.

[0015] All couplers according to the invention described below mainly comprise the following elements: a first port P1, a body connected behind and a second port P2, all three main elements having a circular cross-section and being coaxial. The inner diameter of the port P1 is greater than the inner diameter of the port P2, and at the connection between the coupling section and the port P1, the inner diameter of the coupling section is equal to the inner diameter of the port P1, and at the connection between the coupling section...

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Abstract

The present invention relates to a very broadband multiband transmission-reception coupler-separator of OMT ('OrthoMode Transducer') type for RF frequency telecommunications antennas. This coupler comprises a port (P1) for propagating all the frequencies, a body and a port (P2) for propagating the high frequency bands, these three parts being coaxial, and broadband coupling slots (24A) for propagating the low frequency bands cut in the body and each associated with a waveguide, and it is characterized in that its body (24) joining the two ports exhibits a shape of revolution whose profile evolves according to a multi-polynomial law, constantly decreasing from the port of larger cross section (P1) to the port of smaller cross section (P2). This coupler can operate so as to couple and separate very wide passbands (the overall use of this coupler-separator being greater than one octave), two or four broadband coupling slots are necessary for propagating linear polarizations as well as circular polarizations after recombination.

Description

technical field [0001] The invention relates to a multi-band transceiver coupler-separator, which has very wide bandwidth and is of OMT (OrthoMode Transducer, orthogonal mode converter) type, and is used for microwave frequency wireless communication antennas. Such devices may also be referred to as "multiplexers" or "multiplexing OMTs". To simplify the description, the device will be simply referred to as "coupler" hereinafter. Background technique [0002] figure 1 An OMT called "Linear Polarization Separator" fabricated according to microwave frequency waveguide technology is presented. The OMT, referenced 1, mainly comprises a first port 2 designed to be connected to a corner antenna oriented towards a microwave frequency wireless communication antenna, and two other ports 3, 4 designed to be connected to a transmitter or a receiver . This OMT works only with linear polarization. These three ports are coaxial. Port 3 corresponds to horizontal polarization and port ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/161
CPCH01P1/161
Inventor P·佩罗蒂诺P·勒佩尔捷
Owner THALES SA
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