Load pull isolation switch for a fast locking synthesizer

Details Load pull isolation switch for a fast locking synthesizer Load pull isolation switch for a fast locking synthesizer

1987-07-01

1989-12-05

Tarcza, Thomas H.

Telecommunications

Transmitter and receiver at same station

With transmitter-receiver switching or interaction prevention

455 83, 307 39, 307116, 333101, H04B 144, H01P 110, H03G 900

Patent

active

048857998

ABSTRACT:
A load pull isolation switch for a signal source is discolsed which substantially eliminates the effects of load pull caused by a variable impedance load when selectively coupled and decoupled to a signal source. By judiciously choosing the timing criteria for activating the isolation switch, convention load pull isolation stages are eliminated.
In another embodiment, the load pull isolation switch is disclosed as incorporated in a mobile radio having a fast locking synthesizer. The timing of the operation of the isolation switch is controlled by a microprocessor-controller which not only handles data and control functions for the mobile radio, but also has the necessary method steps incorporated as software within the microprocessor-controller. Such an arrangement is useful for sending voice or data as in a time division multiplex system.

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