Medium impedance RF probe is rugged and wideband
Oct 1, 2004
By Bryan Irons Arugged, low-cost RF probe can be made from materials readily available in the lab. This probe is useful for making relative measurements while troubleshooting...
Alternative approach to a low-cost wideband amplifier
Aug 1, 2004
By Geoff Stokes An alternative approach to the development of a wideband amplifier should take into account the effect of its package and its printed circuit interconnections...
Pierce-gate oscillator crystal load calculation
Jul 1, 2004
By Ramon Cerda The Pierce-gate oscillator is well recognized by most designers, but few understand how to specify the crystal correctly. The crystal used can be either a fundamental AT-CUT or BT-CUT. A BT-CUT crystal has poor frequency stability over temperature compared to an AT-CUT. This topology uses a parallel crystal and not a series crystal....
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...
Characterizing [S]-parameters of 75 circuits with 50 lab equipment
Apr 1, 2004
By James Liu and Brian Whitaker Engineers working with cable, terrestrial or satellite TV applications are frequently required to make S-parameter measurements on these circuits. But...
Broadband low-noise amplifier using GaAs FET
Mar 1, 2004
By Ashok Nawarange A broadband low-noise amplifier can be designed based on Takahasi's results. This design method bypasses the gain bandwidth theory and generates lumped-element...
Low-cost USB wireless Presentation Pal
Feb 1, 2004
By Steven Bible, principle application engineer, Microchip Technology Inc., Chandler, Ariz. This design idea creates a wireless universal serial bus (USB) presentation helper called the Presentation Pal that remotely the slides on your computer....
Optimizing LDMOS transistors' bias control
Jan 1, 2004
By Jim Pflasterer, director of applications engineering, Xicor Milpitas, CA LDMOS transistors are used for RF power amplification in numerous communications applications, with the most popular being cellular base stations. These...
