Featured Articles

31. Implementation Margin Of A Satellite Communication System 2/19/2020

    Learn how to determine a satellite communication system's implementation margin, defined as signal degradation after traveling through the up and downlink equipment, using an EbNo generator.
     

32. Quickly Evaluate High Performance Oscillators With A Phase Noise Analyzer 12/4/2017

    The process of evaluating the performance of ultra-low-phase noise oscillators requires phase noise test systems with lower measurement times, lower noise floor capabilities, and high reliability and repeatability of test data.

33. Testing High Power Amplifiers For Radar Signals Using Peak Power Meters 12/1/2016

    As new power amplifier (PA) technologies are released, the latest being GaN technology, an amplifier’s behavior must be thoroughly tested and evaluated to ensure the highest performance under the stress of high power pulsing signals. 

34. USB HID Software Architecture 12/15/2011

    The Human Interface Device is as type of USB that uses a low bandwidth with a high update rate USB transfer. This application note indicates how Holzworth’s instrument products and the DLLs work with USB HID.

35. Holzworth Cross Correlation In Phase Noise Analysis 4/26/2011

    Cross correlation is a method used in phase noise analysis to extend the range of any single channel measurement by introducing a second channel and utilizing signal processing to locate the noise that is common to the DUT, yet uncommon to each individual channel. This article presents the mathematics with an example of how cross correlation can accurately identify signals or noise that is below the level of the measurement instrument. 

36. Coherent Multi-Channel RF Synthesis 4/7/2010

    Holzworth Instrumentation is a provider of high-performance, multi-channel RF synthesizers that are known for ultra low phase noise performance. In addition, these non-PLL based synthesizers have unique phase characteristics, which add great value to certain applications. This article addresses some frequently asked questions about multi-channel synthesis and provides insight to the engineering trade-offs that go into a synthesizer design.

37. Phase Coherent Multi-Channel RF Synthesis 9/23/2009

    Multi-channel synthesis applications require specific performance parameters that are often overlooked with the design of single channel synthesizer systems. Performance specifications for multi-channel synthesis applications typically require channel to channel, short and long term phase coherence that is not possible with phase-locking an N-number of single channel synthesizers together. This configuration only creates a long term phase-lock ‘average’ between the outputs. Each individual synthesizer also contributes to the short term stability of this system, which is problematic with traditional phase locked synthesizers. By Jason Breitbarth and Joe Koebel, Holzworth Instrumentation

38. Ultra Low Phase Noise — Phase Coherent Synthesizers 9/23/2009

    Holzworth has released a product line of ultra low phase noise, multi-channel CW sources that incorporate up to eight independently tunable channels inside a single 1U high housing. One example is the HS3008A, 3 GHz RF synthesizer, which is capable of tuning frequencies from 8 MHz to 3 GHz in 0.001 Hz steps. Like all Holzworth synthesizers, the HS3008A demonstrates industry leading phase noise with excellent channel-to-channel phase stability. The non-PLL-based synthesis architecture is currently available with bandwidths up to 6 GHz while enabling tight stability, phase coherency and extremely fast tuning speeds.

39. The Characterization Of Gaussian Noise Sources 2/28/2008

    Key applications in high-rate serial data technologies assume that random jitter (RJ) follows a Gaussian distribution and require that receivers be tested under the stress of a calibrated level of Gaussian RJ. However, the most commonly available noise sources have never been rigorously characterized- until now. 

40. IBOC Signal Measurement Using Boonton’s 9102 Handheld Spectrum Analyzer 2/28/2008

    IBOC (In-Band On-Channel) technology is the development of new digital communication technologies which sends high quality digital signals that analog AM and FM radio use today. These digital signals can be picked up by new digital radios, while they have no impact on traditional analog reception and provide for enhanced sound fidelity, improved reception, and news data services...