Power supply and ground design for WiFi transceiver
Nov 1, 2004
By Roger Bremer, Tracey Chavers, Zhongmin Yu A solid RF layout requires careful planning of board stack-up, power supply routing, supply bypassing, and grounding. These techniques, along with correct placement of filter components, can address PLL spurs as demonstrated by an IEEE-902.11a/g transceiver reference design....
Fast Rayleigh Fading Simulation with an IIR Filter and Polyphase Interpolation
Jul 1, 2004
By Christos Komninakis and Joel F. Kirshman This simulator efficiently generates correlated complex Gaussian variates with a
U-shaped power spectral density. It consists of a fixed IIR filter followed by a
variable polyphase interpolator, to accommodate different Doppler rates
specified by the user. The complex Rayleigh fading simulator is implemented as
a model in the Visual System Simulator....
Extending Benefits of 3-D Integration to Next-Generation Wireless Devices
Jun 1, 2004
By Bob Markunas Three-dimensional integration provides a methodology to address many of the
concerns confronting RF designers. Advances in 3-D can be extended to the RF
front to integrate RF, analog and digital functions in miniature IC packages and
overcome the roadblocks presented by process technology....
Versatile signal source analyzer performs multiple tests
Jun 1, 2004
From simple crystal oscillators to YIG-tuned resonators and frequency synthesizers, RF and microwave signal sources require an extensive battery of tests...
IEEE 802.11 Spectral Measurements Using Vector Signal Analyzers
Jun 1, 2004
By Jerry Archambault and Shravan Surineni The vector signal analyzer is fast becoming the instrument of choice for RF
designers working on advanced digital communications systems. They can
perform many of the same measurement and characterization tasks as the
spectrum analyzer, with the added ability to perform many useful digital
demodulation functions....
Unique RF front end allows high TOI
Jun 1, 2004
By Roy Keeney and Eiji Mori Signal analyzers are the instruments of choice for characterizing and measuring today's complex digitally modulated signals. Many required measurements...
Single test instrument eases WLAN Tx/Rx analysis
Mar 1, 2004
To offer an order of magnitude improvement over conventional instruments in conducting radio layer measurements on WLAN devices in production or during...
Silicon integration with millimeter wave phased array antenna
Feb 1, 2004
By Fred Mohamadi To achieve a reliable, efficient and high-speed Wireless LAN (WLAN, IEEE802.11) and wireless metropolitan area network (WMAN, IEEE802.16) a system must...
