作者: Karl R. Brusen
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摘要: A diversity signal strength indicator for transmission site selection in a cellular-like mobile radio system produces an output indication which is proportional to the logarithm of average two input signals. The signals are time multiplexed together form composite signal, and log amplifier/envelope detector then intermediate envelope signal. operated on by peak produce passed through low pass filter detection thus preferably comprised capacitor charged diode storing levels current source draining charge at substantially uniform rate independent magnitude stored during periods between In another embodiment, first detected squaring circuit, amplifier circuit employed combination with selecting suitable ones plurality transceiver sites actuation reception be transmitted remote portable unit.