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US 6,388,537 B1Granted
Antenna feeding system
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorSoichi Matsumoto
Life of this patent
Estimating the term…
Abstract
In order to receive simultaneously signals with different polarizations, the antenna feeding system is adapted to comprise diplexers and a hybrid circuit for synthesizing signals, which are transmitted through signal paths allocated to the frequency of a circularly polarized wave from the diplexers, upon giving 90° phase difference therebetween and for selectively outputting the synthesized signal to either one of signal terminal for right handed circularly polarized wave or for left handed circularly polarized wave.
Claims5
An antenna feeding system comprising:
- a plurality of orthomode transducers for resolving a simultaneously received circularly polarized wave signal and a linearly polarized wave signal into a vertically polarized wave signal and a horizontally polarized wave signal and for outputting each of said vertically polarized wave signal and said horizontally polarized wave signal with respect to each polarization;
- a first diplexer for dividing said vertically polarized wave signal outputted from one of said orthomode transducers into at least two divided signals with respect to frequency and for outputting a divided vertically polarized wave signal having the same frequency as said circularly polarized wave signal to a signal path, which is allocated to the frequency of said circularly polarized wave signal, and for outputting a divided vertically polarized wave signal having the same frequency as said linearly polarized wave signal to a signal terminal provided for said vertically polarized wave signal,
- a second diplexer for dividing said horizontally polarized wave signal outputted from one of said orthomode transducers into at least two divided signals with respect to frequency and for outputting a divided horizontally polarized wave signal having the same frequency as said circularly polarized wave signal to a signal path, which is allocated to the frequency of said circularly polarized wave signal, and for outputting a divided horizontally polarized wave signal having the same frequency as said linearly polarized wave signal to a signal terminal provided for said horizontally polarized wave signal, and
- a hybrid circuit for synthesizing said signals transmitted from said first diplexer and from said second diplexer through said signal paths, which are allocated to the frequency of said circularly polarized wave signal, into a synthesized signal upon imparting a phase difference of ninety degrees between said signals and for outputting said synthesized signal selectively to either of a signal terminal provided for a right-handed circularly polarized wave signal or a signal terminal provided for a left-handed circularly polarized wave signal with respect to a type of said circularly polarized wave signal.
1 more element
An antenna feeding system comprising:
- orthomode transducers for resolving simultaneously received circularly polarized wave signal and linearly polarized wave signal into a vertically polarized wave signal and a horizontally polarized wave signal and for outputting each of said vertically polarized wave signal and said horizontally polarized wave signal with respect to each polarization;
- a first diplexer for dividing said vertically polarized wave signal outputted from said orthomode transducer with respect to frequency and for outputting said vertically polarized wave signal having the same frequency with that of said circularly polarized wave signal to a signal path, which is allocated for the frequency of said circularly polarized wave signal, and for outputting said vertically polarized wave signal having the same frequency with that of said linearly polarized wave to a signal terminal provided for said vertically polarized wave signal;
- a second diplexer for dividing said horizontally polarized wave signal outputted from orthomode transducer with respect to frequency and for outputting said horizontally polarized wave signal having the same frequency with that of said circularly polarized wave signal to a signal path, which is allocated to the frequency of said circularly polarized wave signal, and for outputting said horizontally polarized wave signal having the same frequency with that of said linearly polarized wave signal to a signal terminal provided for said horizontally polarized wave signal, and
- first orthomode transducers being connected to said first diplexer and to said second diplexer through said signal paths being allocated to the frequency of said circularly polarized wave signal and for synthesizing said signals, which are transmitted through said paths from said diplexers, to a circularly polarized wave signal terminal;
- a first 90° polarizer for outputting a vertically polarized wave signal when said circularly polarized signal transmitted from said first orthomode transducers is right-handed, and for outputting a horizontally polarized wave signal when said circularly polarized wave signal transmitted from said first orthomode transducers is left-handed, and
- a second orthomode transducer for outputting a signal to a predetermined signal terminal depending on wave signal outputted from said 90° polarizer being vertically polarized or being horizontally polarized.
3 more elements
Dependencies are inferred from the claim text.