Switchable matching network for an element of a steerable antenn

Details Switchable matching network for an element of a steerable antenn Switchable matching network for an element of a steerable antenn

1987-09-14

1989-02-21

Sikes, William L.

Communications: radio wave antennas

Antennas

With variable reactance for tuning antenna

343777, H01Q 300

Patent

active

048069442

ABSTRACT:
The invention relates to a matching network which may be serially inserted in the path between a transmitter power amplifier and/or a receiver low noise amplifier and an element of a steerable array antenna to compensate for mismatching occurring when the antenna is steered away from bore sight or tuned to off resonant frequencies. The invention permits computer controlled digital setting of the matching network in accordance with the known impedance characteristics of the antenna element, to restore VSWRs which in an exemplary case may have a maximum design value of 3.0 when uncompensated to a VSWR of 1.6 with a simple matching network, or to a VSWR of 1.22 with a more highly corrected matching network.

REFERENCES:
patent: 3129386 (1964-04-01), Daly
patent: 4564843 (1986-01-01), Cooper
patent: 4656483 (1987-04-01), Jaquet

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