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Class Information
Number: 332/168
Name: Modulators > Amplitude modulator > Suppressed carrier double sideband type > Including discrete semiconductor device
Description: Subject matter containing an electrical device whose constituent portions are constructed from solid material having room temperature conductivity between that of a conductor and an insulator and which conductivity is typically modified through the addition of small amounts dopant.

Patents under this class:

Patent Number Title Of Patent Date Issued
5973576 Mixer for mixing carrier signals and data signals Oct. 26, 1999
5686870 Mixer Nov. 11, 1997
5434546 Circuit for simultaneous amplitude modulation of a number of signals Jul. 18, 1995
5214397 Modulator using low-pass filter as delay element May. 25, 1993
5200715 Waveform modulation and demodulation methods and apparatus Apr. 6, 1993
5172079 Balanced modulator designed for low supply voltage Dec. 15, 1992
5153536 Suppressed carrier modulator formed from two partial modulators each including a phase delay path Oct. 6, 1992
4633195 Balanced oscillator with constant emitter voltage level Dec. 30, 1986
4547817 High frequency magnetic recording method Oct. 15, 1985
4413239 Field effect transistor circuit for modulator and demodulator applications Nov. 1, 1983
4278954 Suppressed carrier modulator using differential amplifier Jul. 14, 1981
4180785 Modulator for forming the product of two input signals Dec. 25, 1979
4142162 Low-distortion double sideband suppressed carrier monolithic modulator Feb. 27, 1979
3986146 Double balanced modulator-demodulator Oct. 12, 1976
3940716 Double-balanced modulating and demodulating apparatus Feb. 24, 1976

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