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. 01, 2004
Filed:
Jul. 23, 2002
George J. Miao, Marlboro, NJ (US);
Other;
Abstract
An analog-to-digital (A/D) converter bank with digital down conversion (DDC) is used to substitute a very-high-speed A/D converter for the UWB transceiver. The A/D converter bank has flexibility and scalability operation functions including the number of low-speed A/D converters, adaptive amplifiers, digital FIR filters or one Mth frequency band digital FIR filter, with operating in parallel, as well as analyzed sequence and synthesized sequence switches. The A/D converter bank for the UWB transceiver has a aliasing free and does not have a phase distortion. The DDC, which has scalability to deal with a multirate operation, is used to shift bandpass signals into baseband signals and decimate the baseband signals according to different down samplings. The A/D converter bank with DDC is invented to decrease the computational complexity of resulting calculations, thereby making the UWB transceiver system amenable to use in a very high frequency sampling sensitive applications and in those situations where the available processor's performance is relatively limited.