Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent
1977-12-23
1979-11-27
Gensler, Paul L.
Wave transmission lines and networks
Plural channel systems
Having branched circuits
333 21A, 333135, H01P 116, H01P 120, H01P 520
Patent
active
041763300
ABSTRACT:
A microwave diplexer apparatus for handling simultaneously two independent polarized transmitted signals at one frequency and two independent polarized received signals at a lower frequency. In the transmit mode of operation, a pair of input signals are applied to a first orthogonal mode transducer wherein the electric fields of the signals are established at right angles to each other. The orthogonal, linearly-polarizer signals are then transformed by a pin/ridge-loaded circular polarizer device to oppositely-rotating circularly-polarized signals and coupled via an antenna port of a second orthogonal mode transducer to an antenna for transmission to a desired target.
In the receive mode of operation, a pair of independent oppositely-rotating circularly-polarized signals from the target are received and coupled via the antenna port of the second orthogonal mode transducer to other ports of the second orthogonal mode transducer to which two pairs of arms are coupled for the passage therethrough of orthogonal vectoral components of the circularly-polarized signals. The two pairs of arms are coupled to corresponding magic tee hybrid devices wherein the orthogonal vectoral components derived from the circularly-polarized signals in the pairs of arms are combined and applied to corresponding pin-loaded polarizer devices wherein a phase shift differential of 90.degree. is introduced to the vectoral components in the pairs of arms. The vectoral components from the polarizer devices are applied to another magic tee hybrid device wherein a pair of resultant signals corresponding to the two circularly-polarized signals are derived.
REFERENCES:
patent: 3978434 (1976-08-01), Morz et al.
patent: 4030048 (1977-06-01), Foldes
patent: 4047128 (1977-09-01), Morz
patent: 4100514 (1978-07-01), DiTullio et al.
DiTullio Joseph G.
Parad Leonard I.
Sommers Donald J.
Gensler Paul L.
GTE Sylvania Incorporated
Xiarhos Peter
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