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:
Feb. 25, 2014
Filed:
Dec. 09, 2012
Phuong Thu-minh Huynh, Fairfax, VA (US);
Phuong Thu-Minh Huynh, Fairfax, VA (US);
Other;
Abstract
A quadrature bandpass-sampling receiver for an orthogonal frequency division multiplexing (OFDM) receiver is provided. A transmitted OFDM signal is received by a low-noise amplifier, has its image frequency removed by a subsequent image reject filter, and is frequency-translated to an intermediate frequency by a mixer. A quadrature bandpass-sampling delta-sigma analog-to-digital demodulator (QBS-ADD) down-converts the frequency-translated OFDM signal to baseband based on a high-frequency sampling clock equal to the intermediate frequency, and generates in-phase and quadrature outputs in the form of high-frequency bit streams. The bit streams are fed to a Discrete Fourier Transform (DFT) engine, which generates in-phase and quadrature Fourier components.