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Making RF-to-Baseband Noise Figure Measurements
 


Making RF-to-Baseband Noise Figure Measurements
Article Reprint: Evaluation Engineering, January 2008 
 
Demystifying production test of UWB devices
Article Reprint: Test and Measurement World, January 2008 
 

Press Releases

Verigy Reports Financial Results for its Fourth Quarter and Fiscal Year 2009
CUPERTINO, Calif., Nov. 19, 2009 - Verigy Ltd. (NASDAQ: VRGY), a premier semiconductor test company, today reported financial results for its fourth quarter and fiscal year ended Oct. 31, 2009. 
 
Ten Asian Editors to Tour Verigy’s Silicon Valley Operations
CUPERTINO, Calif. - Nov. 17, 2009 - On November 30, Verigy (NASDAQ: VRGY), a premier semiconductor test company, will host a visit to its Silicon Valley headquarters by a delegation of 10 journalists from technology and business media throughout Asia and the Pacific Rim. 
 
Verigy Announces Fourth Quarter and Fiscal Year 2009 Earnings Release Date and Conference Call
CUPERTINO, Calif., Nov. 3, 2009 – Verigy Ltd. (NASDAQ: VRGY) will release its fourth quarter and fiscal year 2009 financial results after the stock market close on Thurs., Nov. 19, 2009. The company will host a live webcast of its earnings conference call in listen-only mode. 
 

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Feature Stories

Technical Note - Centering Pulse Waveform
In a settling time measurement, rise/fall time calculation, and tests known as template fitting test, samplers are used to record waveforms. The test signal waveform in such applications is usually a clock signal with 50% duty ratio. You may want to shift this waveform in the unit test period window to a position so you can analyze and parameterize it. This technical note describes how to shift ("center") your waveform to any desired phase. 
 
Question: "Why does my Total Harmonic Distortion result look poor?"
The THD result of an ADC is bad. I expected -58 dB THD of 1 MHz signal at 10 MHz bandwidth but it only has -41 dB. What is wrong?  
 
Mixed-signal Lecture Series: DSP-Based Testing Fundamentals 4 - Multi-tone Data Generation
Multi-tone is a popular stimulus signal in mixed signal tests. By using a multi-tone you can capture gain and phase information at multiple frequency points with a single measurement so that it is very effective in frequency response analyses. As discussed in the last newsletter, when a multi-tone is programmed and generated by a DAC, it has a gain shaping of SINC function. In this issue, let’s look at the waveform and think of the point of appropriate multi-tone signal generation. 
 

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