JPS62141233U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a block diagram of the main part showing an embodiment of this invention, FIG. 2 is a block diagram showing the configuration of a general diversity receiving device, FIG. 3 is a block diagram of a conventional diversity receiving device, and FIG. 4 is a block diagram of a conventional diversity receiving device. 5 is a diagram showing the waveforms of the instantaneous value and average value of the signal meter, and the output waveform of the comparator, respectively, and FIG. 5 is a diagram showing the waveform of the output signal of the signal meter with respect to electric field strength. 1A, 1B...Antenna, 2...Switch, 3...Receiver, 4...Diversity controller, 5...First
level shift circuit, 6...first comparator,
7...Flip-flop, 8...Drive circuit, 9...Second
10... Second comparator, 11... Trigger signal switching circuit, 12... Buffer circuit, 13... Electric field threshold circuit.

Claims (1)

[Claims for Utility Model Registration] In a diversity receiving device that detects the electric field strength of a received signal and selectively switches between a plurality of antennas to supply the received signal to a receiver, the instantaneous value of the signal meter output signal of the receiver and a first average value offset with respect to the instantaneous value; and a second average value offset with respect to the first average value and the first average value. a second comparator for comparing the output signal of the first comparator and the second comparator;
The diversity receiving device controls switching of the plurality of antennas based on the instantaneous value signal of the comparator.