WIRELESS

Digital Wireless Repeater

Wireless repeaters are the most often used devices in modern wireless communication systems. Owing to the advantages of lower cost and less complexity than base stations, they have been widely used in shopping malls, hotels, subways, airports to eliminate the signal blind/weak areas to expand signal coverage.

Wireless repeaters receive signals with their antennas, filter out noise by the functions such as filtering and low noise amplification, and then amplify desired signals’ power before transmission. Wireless repeaters can be classified into analog, fiber optical and digital types. Among them digital repeaters are built on software defined radio (SDR) technology and use digital IF (Intermediate Frequency) units instead of analog ones, allowing relay for different wireless protocols just by adjusting software configuration of digital IF units.

A digital repeater is basically made up with RF and digital IF circuits. The RF circuit is built with a low-noise amplifier, analog up and down converters, analog filter, and power amplifiers; it is mainly responsible for low-noise amplification, analog up and down conversion, power amplification, and analog filtering. The digital IF circuit includes an ADC, DAC, digital up and down converters and digital filters to implement A/D and D/A conversions, digital up and down conversion, as well as digital signal filtering, respectively. FPGAs could be used as an integrated solution for digital IF units.

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	AD8339-EVALZ Analog Devices The AD8339 board illustrates the capabilities of the demodulator with programmable phase shifter. AD8339 is a key component of a phase shifter system that aligns time-skewed information contained in RF sigmnals. The AD8339 can be configured using the software provided with the board, or using an external digital pattern generator via the 20-pin flat-cable connector.	BUY
	CFTL-CN0134-EVALZ Analog Devices This circuit is an implementation of the analogue portion of a broadband transmitter - analogue baseband in / RF out. Its designed to evaluate CN0134, utilizing ADF4350, a fully integrated fractional-N PLL IC, that behaves as a local oscillator, upconverting analogue I/Q signals to RF.	BUY
	EVAL-AD5504EBZ Analog Devices This is an evaluation board for AD5504 allowing the user to fully evaluate all the functions and performance of the device prior to designing it into a system. The evaluation board can be used in a standalone mode with control coming from an external DSP or microcontroller, or it can be connected to a PC using the USB cable supplied with the evaluation board kit. Software is provided that allows the user to program the various registers of the AD5504 with ease.	BUY
	AD9284-250EBZ Analog Devices This is a fully featured board that supports various modes of operation for the AD9284 Analogue-to-Digital Converter with application software	BUY
	KSZ8873MLL-EVAL MICREL SEMICONDUCTOR The Kit allows for development with KSZ8873MLL, an integrated 3-port switch on a chip , designed to enable 10/100Mbps switch systems, with advanced power management with energy detect mode that shuts the transceiver down when a port is idle.	BUY

Manufacturer	Product Type	AN Title	AN Number	Part Number	URL
ALTERA	FPGA	Designing Remote Radio Head Applications with Transceiver FPGAs		Arria II GX FPGA	Click here
ALTERA	FPGA	Tool Flow for Design of Digital IF for Wireless Systems	AN442	Cyclone III	Click here
ALTERA	FPGA	Digital IF Modem Design with the DSP Builder Advanced Blockset	AN544		Click here
ALTERA	FPGA	Accelerating DUC & DDC System Designs for WiMAX	AN421		Click here
ANALOG DEVICES	DAC/ADC	Multicarrier CDMA2000 Feasibility	AN808	AD9779A	Click here
ANALOG DEVICES	DAC/ADC	Multicarrier TD-SCDMA Feasibility	AN0974	AD9779A	Click here
ANALOG DEVICES	DAC	Understanding High Speed DAC Testing and Evaluation	AN928		Click here
ANALOG DEVICES	ADC	Understanding High Speed ADC Testing and Evaluation	AN835		Click here
ANALOG DEVICES	ADC	Little Known Characteristics of Phase Noise	AN741		Click here
ANALOG DEVICES	DDC/ADC	A WiMax Double Downconversion IF Sampling Receiver Design	AN851	AD6636/AD9246	Click here
ANALOG DEVICES	DUC	The Advantages of Using a Quadrature Digital Upconverter (QDUC) in Point-to-Point Microwave Transmit Systems	AN-0996	AD9857	Click here
BROADCOM	LNA	LNA Design with the MGA-16516 Matched Pair, Low Noise Amplifier	AN5441	MGA-16516	Click here
BROADCOM	LNA	LNA Design with the MGA-17516 Matched Pair, Low Noise Amplifier	AN5442	MGA-17516	Click here
BROADCOM	LNA	MGA-633P8 GaAs MMIC LNA Enables 900 MHz BTS Amplifier with Industry Best Noise Figure and Linearity	AN5457	MGA-633P8	Click here
BROADCOM	LNA	MGA-635P8 GaAs ePHEMT MMIC 2.5 GHz Low Noise Amplifier with Superior Noise and Linearity Performance	AN5479	MGA-635P8	Click here
BROADCOM	LNA	Using the MGA-87563 GaAs MMIC in Low Noise Amplifier Applications in the 800 Through 2500 MHz Frequency Range	AN1116	MGA-87563	Click here
BROADCOM	RF Amplifier	AVT-50663 / 52663 Darlington Amplifier for Broadband Application (DC to 6GHz)	AN5473	AVT-50663/52663	Click here
BROADCOM	RF Amplifier	AVT-51663 / 53663 Darlington Amplifier for Broadband Application (DC to 6GHz)	AN5474	AVT-51663/53663	Click here
BROADCOM	Mixer	AMMP-XXXX, Production Assembly Process	AN5386	AMMP-XXXX	Click here
BROADCOM	Mixer	The IAM-93516 for 1.9 GHz Down converter for Cellular Infrastructure Application with Integrated IF Amplifier	AN5112	IAM-93516	Click here
FREESCALESEMICONDUCTOR	RF Amplifier	General Purpose Amplifier and MMIC Biasing	AN3100		Click here
FREESCALESEMICONDUCTOR	RF Amplifier	Thermal Measurement Methodology of RF Power Amplifiers	AN1955		Click here
INTERSIL	DDC	Use of HSP50216 QPDC for CDMA Applications (IS-95 and CDMA2000)	AN9928	HSP50216	Click here
INTERSIL	DDC	Use of HSP50216 and ISL5216 QPDC in Wideband Applications - UMTS	AN9927	HSP50216	Click here

Manufacturer	Product Type	White Paper Title	URL
ALTERA	FPGA	DSP-FPGA System Partitioning for MIMO-OFDMA Wireless Basestations	Click here
ALTERA	FPGA	Implementing Digital IF & Digital Predistortion Linearizer Functions with Programmable Logic	Click here

Manufacturer	Product Type	Evaluation Kits Title	EVKs Part Number	Part Number	URL
ANALOG DEVICES	DAC	Using the AD9708/AD9760/AD9762/AD9764-EB Evaluation Board	AD9764-EB	AD9764	Click here
ANALOG DEVICES	DUC	1 GSPS Quadrature Digital Upconverter with 14-Bit DAC Evaluation Board		AD9957	Click here
INTERSIL	DAC	HI5x60EVAL1 User’s Manual	HI5x60EVAL1	HI5960	Click here
INTERSIL	DAC	HI5760EVAL1 Evaluation Board User’s Manual	HI5760EVAL1	HI5760	Click here
TEXAS INSTRUMENTS	DSP	Four-channel cellular wideband digital repeater			Click here
TEXAS INSTRUMENTS	DAC	DAC5675A Evaluation Module User Guide		DAC5675A	Click here
TEXAS INSTRUMENTS	DAC	DAC3283 EVM User's Guide	DAC328x EVM	DAC3283	Click here
TEXAS INSTRUMENTS	DAC	DAC5668/88/89 EVM User's Guide	DAC5688 EVM	DAC5688	Click here
TEXAS INSTRUMENTS	DAC	TSW4100EVM User's Guide	TSW4100	DAC5688	Click here
TEXAS INSTRUMENTS	ADC	ADS61x9/55xxEVM User's Guide	ADS5545 EVM	ADS5545	Click here
TEXAS INSTRUMENTS	ADC	ADS64XX EVM User's Guide	ADS6425 EVM	ADS6425	Click here

Manufacturer	Product Type	Training Title	Part Number	URL
ALTERA	FPGA	Accelerating OFDMA-MIMO Wireless System Design		Click here
ALTERA	FPGA	Cyclone III FPGA Overview Part1	Cyclone III	Click here
ALTERA	FPGA	Cyclone III FPGA Overview Part2	Cyclone III	Click here
ALTERA	FPGA	Stratix FPGA Overview	Stratix	Click here
LINEAR TECHNOLOGY	Mixer	Study on 0.4GHz to 2.7GHz High Linearity Upconverting Mixer	LT5578	Click here
TEXAS INSTRUMENTS	ADC	Improving the Power Efficiency of High-Speed ADCs		Click here
TEXAS INSTRUMENTS	ADC	ADS6425 Podcast	ADS6425	Click here

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WIRELESS

Digital Wireless Repeater

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