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Topic: Direct conversion receiver

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	Encyclopedia topic: Software-defined radio (Site not responding. Last check: 2007-09-17)
		Its cryptographic (additional info and facts about cryptographic) processor could not change context fast enough to keep several radio conversations on the air at once.
		The typical amateur software radio (see amateur radio (additional info and facts about amateur radio)) uses a direct conversion receiver (see the ARRL Handbook, 1999 for a suitable dual mixer design).
		A direct descendent of this device is now, and other companies are developing RFID readers that use SDR.
	www.absoluteastronomy.com /encyclopedia/s/so/software-defined_radio.htm (1910 words)

	CITES Glossary
		Conversion of an Internet address to the corresponding physical address.
		The protocol used determines the way errors are checked, the type of compression, the way the sender indicates the end of the transmission, and the way the receiver indicates that the message has been received.
		Protocols can describe low-level details of machine-to-machine interfaces (e.g., the order in which bits and bytes are sent across a wire) or high-level exchanges between allocation programs (e.g., the way in which two programs transfer a file across the Internet).
	www.cites.uiuc.edu /glossary (3406 words)

	Articles - Software-defined radio (Site not responding. Last check: 2007-09-17)
		The basic arrangement of the radio receiver used an antenna feeding an amplifier and down-converter (see mixer) feeding an automatic gain control, which fed an analog to digital converter that was on a computer VME bus with a lot of digital signal processors (Texas Instruments C40s).
		In 2001, the Massachusetts Instititute of Technology's Auto-ID Center sponsored research by ThingMagic Corporation to develop an RFID reader that used SDR.
		A direct descendant of this device is now available commercially, and other companies are developing RFID readers that use SDR.
	www.zgrey.com /articles/Software_radio (1791 words)

	Electronics and Amateur Radio Links
		NuMorse is a feature packed array of training aids that will hone your code receiving skills in the least possible time.
		This is a page devoted to the R-390 and R-390A state of the art receivers.
		Hands Electronics produce a range of ham radio kits for receivers, transceivers and test equipment, for RF constructors.
	www.aade.com /links.htm (7116 words)

	Sonnet Software- References / Bibliography
		Chi-Yang Chang, Chin-Hsiung Chen, and Shih-Ming Wang, " A Study of Meandered Microstrip Coupler with High Directivity," IEEE MTT Symposium Digest Philadelphia, June 8 - 13, 2003, pp.
		Rodolfo Lucero, Anthony Pavio, David Penunuri, and Jon Bost, " Design of An LTCC Integrated Tri-band Direct Conversion Receiver Front-end module," IEEE MTT-S 2002 Microwave Symposium Digest Volume 3, May 2002, pp.
		Loskot, S. Leppaevuori, A. Kourbanov, I. Vendik, A. Lapshin, and E. Jakku, " A miniaturized branch-line directional coupler on low temperature cofired ceramic board," Proceedings of 31st European Microwave Conference, London Vol.
	www.sonnetsoftware.com /products/static_references.asp (10468 words)

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