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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Pidgeon, Jr.; Rezin E.
Address:
Atlanta, GA
No. of patents:
11
Patents:












Patent Number Title Of Patent Date Issued
6204718 Method and apparatus for generating second-order predistortion without third-order distortion March 20, 2001
An embodiment includes an input node, a shunt impedance electrically connected to the input node, and at least one shunt diode connected in series with the shunt impedance. The input node receives an electrical signal from a signal generator. A bias current is applied to the shunt di
6185232 Wavelength modulated laser for minimizing effects of Rayleigh backscattering February 6, 2001
An optical transmitter (405) includes a distributed feedback semiconductor laser (100) operated in a linear regime below a threshold associated with stimulated Brillouin scattering to generate an optical signal. A resistor (125) or other heater is physically coupled to the semiconductor
5963352 Linearization enhanced operation of single-stage and dual-stage electro-optic modulators October 5, 1999
A distortion circuit for linearizing third-, fifth- and seventh-order distortion components in a non-linear optical communications system includes at least one group of series connected diodes coupled to a common input terminal for receiving a signal source at one end and to an inductor
5500758 Method and apparatus for transmitting broadband amplitude modulated radio frequency signals over March 19, 1996
An optical communications system including a plurality of modulated radio frequency carriers which span more than an octave in bandwidth. In one implementation, the carriers are grouped into ranges which span less than an octave in bandwidth and the individual groups are transmitted over
5471492 Broadband matching network November 28, 1995
A broadband matching network closely matches the output impedance of a broadband amplifier to the input impedance of a laser over a broad frequency band to facilitate efficient transfer of power therebetween. As a result, the broadband amplifier does not have to generate high output
5436749 Method and apparatus for predistortion July 25, 1995
A predistortion circuit for an optical communications system includes a main path for an RF modulating signal and a predistortion path for a predistortion signal, which signals are combined to modulate a laser diode. The distortion path includes a distortion generator which generates
5379141 Method and apparatus for transmitting broadband amplitude modulated radio frequency signals over January 3, 1995
An optical communications system including a plurality of modulated radio frequency carriers which span more than an octave in bandwidth. In one implementation, the carriers are grouped into ranges which span less than an octave in bandwidth and the individual groups are transmitted over
5191459 Method and apparatus for transmitting broadband amplitude modulated radio frequency signals over March 2, 1993
An optical communications system including a plurality of modulated radio frequency carriers which span more than an octave in bandwidth. In one implementation, the carriers are grouped into ranges which span less than octave in bandwidth and separately transmitted over uique optical lin
5140603 Overmodulation protection for amplitude modulated laser diode August 18, 1992
A laser diode protection circuit which monitors the r.f. modulation level of the input modulating signal to the laser diode and disconnects the laser diode from the r.f. modulating signal when it exceeds an acceptable level. The circuit further monitors the output of the d.c. power suppl
4965534 Channel frequency generator for use with a multi-frequency output generator October 23, 1990
An apparatus and method is disclosed which phase locks a frequency-agile modulated output signal to any selected channel of a comb generated output. The phase error of an input signal is tracked, the input signal is modulated up to a carrier output frequency, and the modulated output
4912721 Cable television spread spectrum data transmission apparatus March 27, 1990
Apparatus for transmitting data spread across at least a portion of the bandwidth of a cable television channel comprises a carrier signal oscillator, a frequency divider, a pseudorandom sequence generator and two exclusive OR gates. A first exclusive OR gate serves to spread a data










 
 
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