218974 ⎘
Demodulation of angle-, frequency- or phase- modulated oscillations; Details of arrangements applicable to more than one type of frequency demodulator; Arrangements for reducing frequency deviation, e.g. by negative frequency feedback wherein the demodulated signal is used for controlling a bandpass filter
Bandpass filter
#2Dynamic high-pass filter cut-off frequency adjustment
#3Channel selector for a radio frequency receiver
#4Measuring device
#5Communication channel using logarithmic detector amplifier (LDA) demodulator