| 摘要 |
PROBLEM TO BE SOLVED: To provide a receiver that is capable of improving an interference wave characteristic, input frequency offset resistance, and an out-of-band detection characteristic.SOLUTION: A receiver includes: a channel selection filter that receives input of an IF signal, performs filtering on the IF signal to generate a first signal, and outputs the first signal; an IF amplifier that receives input of the first signal from the channel selection filter, amplifies the first signal to generate a second signal, and outputs the second signal; a first detector that receives input of the second signal from the IF amplifier, performs delay detection on the second signal to generate a third signal, and outputs the third signal; a second detector that receives input of the second signal from the IF amplifier, performs pulse count detection or quadrature detection on the second signal to generate a fourth signal, and outputs the fourth signal; a switching circuit that selects one of the third signal and the fourth signal and outputs the selected signal as a demodulation signal to an output terminal; and a control circuit that controls the selection of one of the third signal and the fourth signal by the switching circuit. |
