Amplifier

Details Amplifier Amplifier

2007-01-09

2007-01-09

Pascal, Robert (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including frequency-responsive means in the signal...

C330S306000

Reexamination Certificate

active

10495815

ABSTRACT:
An amplifier comprising a field effect transistor, a terminating network comprising inductors connected in series separated by capacitors connected in parallel, a filter and a load, wherein the values of the capacitors and inductors are arranged to present open circuits to a predetermined number of odd harmonics of a signal frequency being amplified, and to present short circuits to a predetermined number of even harmonics of the signal frequency, wherein the normalised values of the inductors and capacitors of the terminating network are selected using the following procedure: Let gr=Crr odd=Lrr even then g1=1, g1g2=(a); grgr+1=(b), r=2→2m−1 and g2mg2m+1=(c) where (m−1) represents the predetermined number of odd harmonics which are presented with an open circuit1m⁡(2⁢m-1)(a)4(2⁢m-1+r)⁢(2⁢m-r)(b)1m.(c)

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S. Dietsche “L'optimisation des amplificateurs de puissance á excitation d'entrée sinusoïdale en vue de leur rendement électrique et de leur linéarité”, Universite de Paris-Sud, 1995, pp. 19-36, 50-63, 75-90 and 103-104.
Steve C. Cripps, RF Power Amplifiers for Wireless Communications, 1999, pp. 126-127, Artech House, Inc., Norwood, MA.

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