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:
Dec. 26, 2017
Filed:
Nov. 06, 2015
GM Global Technology Operations Llc, Detroit, MI (US);
Timothy J. Talty, Beverly Hills, MI (US);
Cynthia D. Baringer, Malibu, CA (US);
Mohiuddin Ahmed, Moorpark, CA (US);
Albert E. Cosand, Agoura Hills, CA (US);
James Chingwei Li, Simi Valley, CA (US);
Peter Petre, Oak Park, CA (US);
Zhiwei A. Xu, Davis, CA (US);
Yen-Cheng Kuan, Los Angeles, CA (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A cellular radio architecture that includes a multiplexer coupled to an antenna structure and including multiple signal paths, where each signal path includes a bandpass filter that passes a different frequency band than the other bandpass filters and a circulator that provides signal isolation between the transmit signals and the receive signals. The architecture also includes a receiver module having a separate signal channel for each of the signal paths in the multiplexer, where each signal channel in the receiver module includes a receiver delta-sigma modulator that converts analog receive signals to a representative digital signal. The delta-sigma modulator includes an LC filter having a plurality of LC resonator circuits, a plurality of transconductance amplifiers and a plurality of integrator circuits, where a combination of one resonator circuit, transconductance amplifier and integrator circuit represents a two-order stage of the LC filter.