Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1987-05-28
1989-08-08
Griffin, Robert L.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
329144, 329179, 330 59, 331116FE, H04B 900
Patent
active
048560952
ABSTRACT:
A field-effect transistor performs four functions, namely signal demodulation, generation of a local oscillator signal, generation of harmonics of this local oscillator signal through frequency multiplication, and mixing of the demodulated signal with either the local oscillator signal or one of its harmonics to produce a signal at a lower intermediate frequency; the field-effect transistor being the key element in a demodulator-downconversion circuit.
REFERENCES:
patent: 3972004 (1976-07-01), Libs
patent: 4503403 (1985-03-01), Taylor et al.
patent: 4631500 (1986-12-01), Rauscher
Large-Signal Technique for Designing Single-Frequency and Voltage-Control GaAs FET Oscillators, by Christen Rauscher, IEEE Transactions on Microwave Theory and Techniques, vol. MTT-29, No. 4, Apr. 1981.
High-Frequency Doubler Operations of GaAs Field-Effect Transisters, by Christen Rauscher, IEEE Transactions on Microwave Theory and Techniques, vol. MTT-31, No. 6, Jun. 1983.
Microwave Characteristics of an Optically Controlled GaAs MESFET, by Hideki Mizuno, IEEE Transactions on Microwave Theory and Techniques, vol. MTT-31, No. 7, Jul. 1983.
Efficient Simple Optical Heterodyne Receiver; DC to 80 GHz, by D. K. Donald et al., presented at 1985 SPIE Conference, Washington, DC.
The OPFET: A New High Speed Optical Detector, by J. C. Gammel et al., in Proceedings of the IEDM, 1978, pp. 120-123.
Beek Leslie Van
Griffin Robert L.
Lesniak Andrew M.
McDonnell Thomas E.
Rutkowski Peter T.
LandOfFree
OPFET demodulator-donwconverter for detecting microwave modulate does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with OPFET demodulator-donwconverter for detecting microwave modulate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and OPFET demodulator-donwconverter for detecting microwave modulate will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-912520