FM DETECTORPURPOSE: To reduce pulse noise at a weak electric field of an FM detector employing a PLL detector. ;CONSTITUTION: An FM modulation signal amplified by a broad band amplifier 1 and outputted is inputted to one input terminal of a narrow band filter 3 and a signal selection ...
4117406Muting arrangement for AM synchronous detector using a PLL circuit1978-09-26Takahashi et al.325/348 408177182 Detent manual varactor tuning system1978-03-28Hendrickson334/15 3231822Frequency modulation feedback receiver1966-01-25Tillotson
;CONSTITUTION: This AM/FM receiver provided with double conversion type AM and FM receiving circuits is constituted of a PLL circuit 50 for generating a local oscillation signal for the 2nd AM mixer 4 and a test signal for an FM detector 24, an A/D converter 39 for A/D-converting the ...
Internal digital logarithmic IF AGC amplifier with up to 48 dB gain and 68 dB control range Peak search tuner IF AGC for optimal adaptive drive of the IF ADC Switchable IF PLL and IF AGC loop bandwidths Precise AFC and lock detector Accurate group delay equalization for all standards Very ro...
The performance and specifications of an IC which combines the functions of am rf amplifier, am mixer, am local oscillator, am if amplifier, am agc, fm if limiter, fm detector, fm level detector, fm tuning meter drive, fm muting, multipl... D Murakami,K Yamamoto,M Hasegawa,... - 《...
An apparatus for receiving broadcast FM waves using an FM (Frequency Modulated) detector is disclosed in which an output signal level of an automatic gain controller (AGC) is controllable so that when the C/N ratio is reduced and the output level of the automatic gain controller is reduced, ...
The performance of PCM/FM using a delay-line detector in multipath interference is analyzed. In aeronautical telemetry applications, the multipath interfer... Rice,M. - 《IEEE Transactions on Aerospace & Electronic Systems》 被引量: 37发表: 2002年 大动态多普勒频移下PCM/FM解调算法的研究 modulation...
Modulation apparatus, modulation method, modulated wave receiving apparatus, and modulation systemReceiving levels of electric waves in a peripheral area are detected by an FM level detector in an FM modulator A reference frequency band in ... Y Miyahara - US 被引量: 2发表: 2003年 加载更多0关...
A phase-locked loop (PLL) can be used to create a complex but high-performance circuit for FM demodulation. A PLL can “lock onto” the frequency of an incoming waveform. It does this by combining a phase detector, a low-pass filter (aka “loop filter”), and a vo...
using H/V PLL or peak IF AGC (I2C-bus selectable)Internal digital logarithmic IF AGC amplifier with up to 48 dB gain and 68 dB control rangePeak search tuner IF AGC for optimal adaptive drive of the IF ADCSwitchable IF PLL and IF AGC loop bandwidthsPrecise AFC and lock detectorAccurate ...