Quadrature combiner

Details Quadrature combiner Quadrature combiner

1988-02-18

1989-03-21

Gensler, Paul

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333131, H03H 748

Patent

active

048147303

ABSTRACT:
An improved, high frequency, high or low power, broadband quadrature combiner having a significant reduction in weight, and improved electrical performance such as, decreased insertion loss, improved phase linearity, reduced Intermodulation Distortion (IMD) and improved VSWR, as well as improved simplified tuning opportunities. A reduction in the number of transformers used in the prior art quadrature combiner design facilitates weight reduction and independent tuning of a zero and ninety degree phase network. Specific design improvements to the prior art quadrature combiner include: elimination of the input hybrid, scaling of the phase networks to twice its prior art impedance and optimization of values over the frequency range, and the substitution of an output hybrid utilizing a single hybrid transformer in series with an impedance matching transformer.

REFERENCES:
patent: 3454905 (1969-07-01), Winegard
patent: 3895321 (1975-07-01), Seidel
patent: 4584581 (1986-04-01), Teshirogi
Zverev, Handbook of Filter Synthesis, pp. 548-550, 524 & 525.

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