Telecommunications – Receiver or analog modulated signal frequency converter – Plural output
Reexamination Certificate
2007-08-14
2007-08-14
Nguyen, Duc M. (Department: 2617)
Telecommunications
Receiver or analog modulated signal frequency converter
Plural output
C455S130000, C455S144000, C330S296000
Reexamination Certificate
active
10418905
ABSTRACT:
Apparatus for detecting the envelope of an RF signal that comprises an RF transistor operating essentially at a non-linear operating point at the RF frequency range; a DC power supply for feeding the RF transistor; a dummy load for terminating the output of the RF transistor; and at lease one impedance, through which the DC power supply feeds the RF transistor, for obtaining an indication signal developed across the impedance. The indication signal represents the envelope, from the fluctuating current drawn by the RF transistor from the DC power supply during the time period when the RF signal is applied to the feeding input.
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A.A.M. Saleh et al, Improving The Power Added Eficiency of FET Amplifiers Operating With Varying-Envelope Signals, Jan. 1983, IEEE, vol. MTT-31 No. 1, pp. 51-56.
Bar-David Israel
Veinblat Alexander
Lee Justin
Marsteller & Associates, P.C.
Nguyen Duc M.
Paragon Communications Ltd.
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