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:
Sep. 02, 2008
Filed:
Sep. 28, 2006
Ming-lin Tsai, Taipei, TW;
Ming-Lin Tsai, Taipei, TW;
Via Technologies, Inc., Taipei, TW;
Abstract
A power amplifier amplifying an input signal to generate an output signal, comprising a cascode unit and a bias circuit. The cascode unit comprises a cascode stage, a first input stage, and a second input stage. The cascode stage generates the output signal. The first input stage, in cascode with the cascode transistor, has a first signal input to be biased to provide a first amplifier gain. The second input stage, in cascode with the cascode transistor, has a second signal input to be biased to provide a second amplifier gain. The bias circuit, coupled to the first and the second input stages comprises first and second switches. The first switch, coupled to the first input stage, is switched on to bias the first input stage with a bias voltage. The second switch, coupled to the second input stage, is switched on to bias the second input stage with the bias voltage.