Pulse or digital communications – Transmitters – Antinoise or distortion
Patent
1998-10-16
2000-11-07
Chin, Stephen
Pulse or digital communications
Transmitters
Antinoise or distortion
327317, 359337, H04K 102, H04L 2503, H04L 2549
Patent
active
061447064
ABSTRACT:
To obtain a uniform improving effect of secondary distortion over a wide frequency band with a very simple configuration and less power consumption in the distortion compensation circuit, that improves the secondary distortion circuit of an optical transmitter and a high-frequency amplifier used for a transmission line processing a high-frequency signal over a wide frequency band, such as a cable television(CATV). A fundamental passing path for passing a fundamental wave is configured by connecting an attenuation component 102 for attenuating a signal, comprising a combination of resistors in series with a delay line 103, and a distortion adding path to add distortion is configured by connecting a 1st attenuation component 104 for attenuating a signal comprising a resistor, a 1st diode 105 and a 2nd diode 106 for generating distortion in series and connecting a 2nd delay element 107 and a 2nd attenuation element 108 for setting a signal level and comprising a resistor is series between a connecting point Q of the 1st diode 105 and the 2nd diode 106 and an output terminal 109.
REFERENCES:
patent: 4109212 (1978-08-01), Donnell et al.
patent: 5132639 (1992-07-01), Blauvelt et al.
patent: 5282072 (1994-01-01), Nazarathy et al.
patent: 5600472 (1997-02-01), Uesaka
patent: 5675613 (1997-10-01), Uwano et al.
patent: 5939920 (1999-08-01), Hiraizumi
Nishizono Hiroki
Saito Yasushi
Sato Yuzo
Chin Stephen
Jiang Lenny
Yagi Antenna Co., Ltd.
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