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:
Apr. 13, 2010
Filed:
Jun. 28, 2004
Osama Sami Haddadin, Salt Lake City, UT (US);
Brad Terry Hansen, Salt Lake City, UT (US);
David S. Nelson, Salt Lake City, UT (US);
Roland Richard Henrie, Provo, UT (US);
Osama Sami Haddadin, Salt Lake City, UT (US);
Brad Terry Hansen, Salt Lake City, UT (US);
David S. Nelson, Salt Lake City, UT (US);
Roland Richard Henrie, Provo, UT (US);
L-3 Communications, New York, NY (US);
Abstract
A demodulator, suitable for use in a communication system and in a modem, has a block polyphase circuit with circuit blocks for different signal processing functions, particularly filtering, delay, and frequency conversion. The circuit blocks are arranged for parallel processing of different portions of an input sequence of signals. Signals of the input sequence to be filtered are divided among the blocks by a demultiplexer for processing at a clock frequency lower than a clock frequency of the input signal sequence. Signals outputted by groups of the circuit blocks are summed to produce an output signal of the group. Output signals of all of the groups are multiplexed to provide an output signal sequence such that the repetition frequency of the outputted signals may be higher, lower, or equal to that of the input signal sequence. This enables use of programmable circuitry operative at reduced clock rates.