US 7,321,263 B2
Class E power amplifier circuit and associated transmitter circuits
Thorsten Brabetz, Belfast (United Kingdom); and Vincent Francis Fusco, Belfast (United Kingdom)
Assigned to Queen's University of Belfast, Belfast (United Kingdom)
Filed on Feb. 24, 2005, as Appl. No. 11/65,640.
Claims priority of application No. 0404121.6 (GB), filed on Feb. 25, 2004.
Prior Publication US 2005/0218977 A1, Oct. 06, 2005
Int. Cl. H03F 3/38 (2006.01)
U.S. Cl. 330—10  [330/251; 330/207 A] 16 Claims
OG exemplary drawing
 
1. A phase shift keying signal transmission circuit comprising a phase shift keying modulator and a class E power amplifier, the class E power amplifier comprising an active device, a first inductor, a DC blocking element and an oscillating element driven by a voltage signal and comprising a parallel LC resonant circuit connected in parallel with the active device, wherein the first inductor is connected in series between the active device and the DC blocking element,
wherein the phase shift keying signal transmission circuit incorporates an analogue signal source connectable to a class E power amplifier bias voltage control means so that the analogue signal source modulates the output from the phase shift keying modulator.