1
Shoichi Narahashi, Toshio Nojima, Makoto Maeta, Kazuaki Murota: Feed-forward amplifier. Nippon Telegraph and Telephone Corporation, Pollock Vande Sande and Priddy, November 24, 1992: US05166634 (51 worldwide citation)

In a feed-forward amplifier which has an error detection circuit for detecting a nonlinear distortion component of a main amplifier and an error rejection circuit for amplifying the detected distortion component by an auxiliary amplifier and injecting it into the main amplifier to cancel an error co ...


2
Hironori Sakamoto, Satoru Ohara, Toshio Nojima, Shoichi Narahashi, Makoto Maeta: Receiver capable of reliably detecting a failure. Japan Radio, Nippon Telegraph & Telephone Corporation, NTT Mobile Communication Network, Frishauf Holtz Goodman & Woodward, May 17, 1994: US05313657 (8 worldwide citation)

In a receiver comprising a receiver filter (12) with a frequency attenuation band and a pilot oscillator (25) for generating a pilot oscillation signal with a pilot frequency in the frequency attenuation band, a coupler (26) couples the pilot oscillation signal and a filtered receiver signal of the ...