Abnormal transmission stopping circuit for transmitter

Details Abnormal transmission stopping circuit for transmitter Abnormal transmission stopping circuit for transmitter

1994-04-26

1996-06-11

Eisenzopf, Reinhard J.

Telecommunications

Transmitter

With electrical protection of transmitter circuit or operator

455115, 455126, 455127, 330207P, 330298, H04B 104, H02H 720

Patent

active

055265286

ABSTRACT:
An abnormal transmission stopping circuit for use in a transmitter including a base band signal processing circuit, an amplitude modulator which modulates the amplitude of a carrier signal in accordance with a base band signal, and a transmission amplifier which amplifies a signal modulated by the amplitude modulator. The stopping circuit includes an electric current detecting circuit which detects a power supply current to the transmission amplifier, and a comparator which generates and supplies a transmitting function stopping signal to the base band signal processing circuit when the detected power supply current exceeds a threshold value.

REFERENCES:
patent: 4761824 (1988-08-01), Saito
patent: 4859967 (1989-08-01), Swanson
patent: 4878034 (1989-10-01), Gross et al.
patent: 5271043 (1993-12-01), Fouche et al.
patent: 5365201 (1994-11-01), Shih et al.

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