Diversity receiver

Details Diversity receiver Diversity receiver

1986-12-19

1989-04-18

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Plural receivers

455140, 455343, H04B 1116

Patent

active

048233986

ABSTRACT:
A diversity receiver includes first and second receivers, a first switch, a comparator, a second switch, and a controller. The first and second receiver have receiver antennas and generate demodulated signals and electric field detection outputs in accordance with received electric fields, respectively. The first switch performs switching between the demodulated signals from the first and second receivers in accordance with an output switching control signal and outputs a selected demodulated signal. The comparator compares the electric field detection outputs from the first and second receivers, respectively, and supplies the output switching control signal to the first switch. The second switch turns on/off a power source of the first receiver in accordance with a power source switching control signal. The controller receives the electric field detection output from the second receiver, calculates an average intensity of the electric field, and supplies the power source switching control signal to the second switch in accordance with the average intensity of the electric field.

REFERENCES:
patent: 4035728 (1977-07-01), Ishikawa et al.
patent: 4403343 (1983-09-01), Hamada
patent: 4494244 (1985-01-01), Arndt et al.
patent: 4633519 (1986-12-01), Gotoh et al.
patent: 4756023 (1988-07-01), Kojima

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