Symmetrically-configured variable ratio power combiner using sep

Details Symmetrically-configured variable ratio power combiner using sep Symmetrically-configured variable ratio power combiner using sep

1982-09-21

1985-01-08

Gensler, Paul L.

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333137, 333 21A, H01P 504, H01P 518

Patent

active

044929382

ABSTRACT:
A variable ratio power combiner employs, as its major coupling component, one or more septum polarizers and associated 90.degree. differential phase shifters or quarter waveplates in place of conventional OMTs. Advantageously, a septum polarizer is a relatively simple component that serves the same function as an OMT and polarizer combination. Because it has an essentially T-shaped configuration, it can bring a pair of waveguide arms together in the same plane back-to-back, so that the resulting power combiner may provide the desired symmetrical coupling. Normally the variable ratio power combiner requires only symmetrical inputs for the sources and not both symmetrical inputs and outputs, so that only a single septum polarizer and associated quarter waveplate are employed, with an OMT used for the output. For a completely symmetrical configuration, however, the other OMT may be replaced by a separate septum polarizer/rotatable quarter waveplate arrangement.

REFERENCES:
patent: 2970284 (1961-01-01), Goubau
patent: 3109996 (1963-11-01), Allen
patent: 3588751 (1971-06-01), Paine
patent: 3668567 (1972-06-01), Rosen
patent: 4310813 (1982-01-01), Yuuki et al.
Chen et al., A Wide-Band Square-Waveguide Array Polarizer, IEEE _Trans. on AP, May 1973, pp. 389-391.

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