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:
Mar. 04, 2014
Filed:
Feb. 08, 2013
Broadcom Corporation, Irvine, CA (US);
Ehsan Adabi, Newport Beach, CA (US);
Tirdad Sowlati, Irvine, CA (US);
Broadcom Corporation, Irvine, CA (US);
Abstract
A circuit for a reflection-type variable attenuator may include a hybrid module including an input port, an output port, a first reflection port, and a second reflection port. The hybrid module may be configured to split an incident signal received at the input port into a first and a second input signal. A first and a second reflection circuit may be coupled to the first and the second reflection ports, respectively. The first and the second reflection circuits each may include one or more transistors, and may be configured to, respectively, reflect the first and the second input signals to generate a first and a second reflected signal, which are directed to the output port to be constructively combined to form an output signal that is an attenuated replica of the incident signal. A variable attenuation may be achieved by controlling amount of reflection through the reflection circuits.