Logarithmic detector amplifier system for use as high sensitivity selective receiver without frequency conversion

作者: Forrest James Brown , Patrick Antoine Rada , Alexandre Dupuy

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摘要: A logarithmic detector amplifying (LDA) system is provided for use as a high sensitivity receive booster or replacement low noise amplifier in chain of communication device. The LDA includes an circuit configured to input signal having first frequency and generate oscillation based on the signal, sampling coupled terminate predetermined threshold periodically clamp restart series pulses modulated by one more resonant circuits with establish operation output second frequency, being substantially same frequency.

参考文章(147)
Yoshifumi Suzuki, Tadashi Shirato, Modulation and demodulation method, modulator and demodulator ,(1996)
James Wilson Rae, Automatic noise limiter ,(1976)
Stephen T. Janesch, Self-tuning amplification device ,(2013)
Chang Hee Hyoung, Hyung Il Park, Sung Weon Kang, Jae Hoon Shim, In Gi Lim, Jung Bum Kim, Jin Kyung Kim, Ki Hyuk Park, Tae Wook Kang, Sung Eun Kim, Kyung Soo Kim, Jung Hwan Hwang, Duck Gun Park, Apparatus for frequency modulating and demodulating of frequency selective baseband with gain of frequency diversity, and apparatus for transmitting and receiving using for this ,(2008)
William Peil, Robert J. McFadyen, Cascode FM tuner for a radio receiver ,(1975)
Matthew Robert Foster, Ryan James Orsi, Gregory Poilasne, Capacitively coupled compound loop antenna ,(2012)
Todd E. Chornenky, Security and monitoring apparatus ,(2009)
Toshiyuki Umeda, Shoji Otaka, Oscillator and radio communication device ,(2012)