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.
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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. [-LESS]
Hover over the diagram blocks to view more recommended solutions.
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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. |
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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. |
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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. |
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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 |
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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. |
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| ALTERA |
FPGA |
Designing Remote Radio Head Applications with Transceiver FPGAs |
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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 |
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Click Here |
| ALTERA |
FPGA |
Accelerating DUC & DDC System Designs for WiMAX |
AN421 |
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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 |
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Click Here |
| ANALOG DEVICES |
ADC |
Understanding High Speed ADC Testing and Evaluation |
AN835 |
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Click Here |
| ANALOG DEVICES |
ADC |
Little Known Characteristics of Phase Noise |
AN741 |
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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 |
| AVAGO TECHNOLOGIES |
LNA |
LNA Design with the MGA-16516 Matched Pair, Low Noise Amplifier |
AN5441 |
MGA-16516 |
Click Here |
| AVAGO TECHNOLOGIES |
LNA |
LNA Design with the MGA-17516 Matched Pair, Low Noise Amplifier |
AN5442 |
MGA-17516 |
Click Here |
| AVAGO TECHNOLOGIES |
LNA |
MGA-633P8 GaAs MMIC LNA Enables 900 MHz BTS Amplifier with Industry Best Noise Figure and Linearity |
AN5457 |
MGA-633P8 |
Click Here |
| AVAGO TECHNOLOGIES |
LNA |
MGA-635P8 GaAs ePHEMT MMIC 2.5 GHz Low Noise Amplifier with Superior Noise and Linearity Performance |
AN5479 |
MGA-635P8 |
Click Here |
| AVAGO TECHNOLOGIES |
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 |
| AVAGO TECHNOLOGIES |
RF Amplifier |
AVT-50663 / 52663 Darlington Amplifier for Broadband Application (DC to 6GHz) |
AN5473 |
AVT-50663/52663 |
Click Here |
| AVAGO TECHNOLOGIES |
RF Amplifier |
AVT-51663 / 53663 Darlington Amplifier for Broadband Application (DC to 6GHz) |
AN5474 |
AVT-51663/53663 |
Click Here |
| AVAGO TECHNOLOGIES |
Mixer |
AMMP-XXXX, Production Assembly Process |
AN5386 |
AMMP-XXXX |
Click Here |
| AVAGO TECHNOLOGIES |
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 |
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Click Here |
| FREESCALESEMICONDUCTOR |
RF Amplifier |
Thermal Measurement Methodology of RF Power Amplifiers |
AN1955 |
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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 |
| LATTICE SEMICONDUCTOR |
FPGA |
Multi-Channel Digital Up/Down Converter for WiMAX Systems |
RD1052 |
LatticeECP2M-35 |
Click Here |
| LATTICE SEMICONDUCTOR |
FPGA |
Wireless/Radio Head Solutions |
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Click Here |
| LATTICE SEMICONDUCTOR |
FPGA |
Low Cost, Low Power RRH Solution |
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Click Here |
| LINEAR TECHNOLOGY |
Mixer |
Fast Time Division Duplex (TDD) Transmission Using an Upconverting Mixer with a High Side Switch |
DN480 |
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Click Here |
| 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 |
| LATTICE SEMICONDUCTOR |
FPGA |
FPGAs in Next Generation Wireless Networks |
Click Here |
| LATTICE SEMICONDUCTOR |
FPGA |
The FPGA As A Flexible And Low-Cost Digital Solution For Wireless Base Stations |
Click Here |
| Manufacturer |
Product Type
| White Paper Title
| URL
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| 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 |
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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 |
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Click Here |
| TEXAS INSTRUMENTS |
DAC |
DAC5675A Evaluation Module User Guide |
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DAC5675A |
Click Here |
| TEXAS INSTRUMENTS |
DAC |
TSW4200 Demonstration Kit User's Guide |
TSW4200 |
DAC3283 |
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| TEXAS INSTRUMENTS |
DAC |
DAC3283 EVM User's Guide |
DAC328x EVM |
DAC3283 |
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| TEXAS INSTRUMENTS |
DAC |
DAC5668/88/89 EVM User's Guide |
DAC5688 EVM |
DAC5688 |
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| 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 |
| ALTERA |
FPGA |
Accelerating OFDMA-MIMO Wireless System Design |
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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 |
| LATTICE SEMICONDUCTOR |
FPGA |
LatticeECP3 RRH Solution |
LatticeECP3 |
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| LINEAR TECHNOLOGY |
Mixer |
Study on 0.4GHz to 2.7GHz High Linearity Upconverting Mixer |
LT5578 |
Click Here |
| NATIONAL SEMICONDUCTOR |
ADC |
ADC16V130 16-bit, 130 MSPS Reference Subsystem Overview |
ADC16V130 |
Click Here |
| NATIONAL SEMICONDUCTOR |
ADC |
National's Communications Infrastructure Solutions Optimize System Efficiency |
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Click Here |
| TEXAS INSTRUMENTS |
ADC |
Improving the Power Efficiency of High-Speed ADCs |
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Click Here |
| TEXAS INSTRUMENTS |
ADC |
ADS6425 Podcast |
ADS6425 |
Click Here |
| Manufacturer |
Product Type |
Training Title |
Part Number |
URL |
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