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US 5,510,757 AGranted
Broadband miniature transfer switch matrix
AssigneeLoral Corporation
InventorsMahesh Kumar, Michael E. Knox
Life of this patent
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Abstract
Broadband, monolithic, planar m.times.m and m.times.n transfer switches with diode switching elements are disclosed. Symmetry of the switches maintain equal insertion amplitude and phase performance. Compensation of phase unbalance caused by diode parasitic capacitance is provided by inductors serially coupled between the diodes and the input and output terminals of the transfer switch. Stripline transmission lines are utilized and isolation between the transmission lines is provide in regions of stripline cross over in the plane.
Claims13
A transfer switch comprising:
- a plurality of input terminals;
- a plurality of output terminals interspersed between said input terminals so that input and output terminals alternate, providing respective path segments between input and output terminals;
- unidirectional current conductive devices positioned in each of said path segments and coupled between said input and said output terminals of said segments, said devices having inherent parasitic capacitance;
- and
- inductors positioned in said path segments coupled between said input terminal of said path segment and said unidirectional current conductive devices and between said output terminal of said segment and said unidirectional current conductive devices, said inductor tuning out said parasitic capacitance of said unidirectional current conductive devices to maintain phase balance.
2 more elements
Dependencies are inferred from the claim text.