The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 18, 2002
Filed:
Jul. 05, 2000
Applicant:
Inventors:
Arshad Madni, Swindon, GB;
Lance R Trodd, Swindon, GB;
Assignee:
Mitel Semiconductor Limited, Wiltshire, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 1/36 ; H03F 3/45 ;
U.S. Cl.
CPC ...
H03F 1/36 ; H03F 3/45 ;
Abstract
A radio frequency amplifier comprises an input amplifier provided with a shunt feedback path for determining the input impedance. A first transconductance amplifier forms part of a series feedback arrangement with a resistor around the amplifier so as to boost the effective value of the resistor. An identical transconductance amplifier is connected to the output of the input amplifier and its output forms the output of the radio frequency amplifier.