Featured Articles

41. Verifying Power Integrity For DDR Memories 1/12/2018

    One of the key challenges for maintaining signal integrity with DDR memories is to keep signal integrity in the presence of power and ground rail fluctuations. The ripple and noise on the power distribution network can negatively impact clock and data jitter, which has a direct impact on data transfer performance. The R&S®RT-ZPR20 power rail probe is a specialized oscilloscope probe for very low-noise measurements on power rails that is with integrated offset, allowing for zoom in on the ripple sitting on top of the power rail voltage.

42. Noise Power Ratio Signal Generation And Measurement 11/30/2017

    There are many noise power ratio (NPR) measurement techniques used to test high performance multi-carrier amplifiers. Rohde & Schwarz offers this application note to assist as a guide to generating NPR stimulus signals and measure the resulting NPR of a device under test. 

43. Mastering Phase Noise Measurements: Part 3 7/19/2017

    No matter the level of knowledge you possess, it is important to have a good understanding of phase noise basics and to learn new measurement techniques for improving designs. This application note is the third part in a series on mastering phase noise measurements.

44. Group Delay and Phase Measurement on Frequency Converters 4/19/2017

    Frequency converters such as those found in satellite transponders need to be characterized not only in terms of amplitude transmission, but also in terms of phase transmission or group delay, especially with the transition to digital modulation schemes. 

45. Mastering Phase Noise Measurements: Part 2 3/14/2017

    No matter your level of knowledge, it is important to understand phase noise basics and to learn new measurement techniques for improving designs. This application note is the second in a series on mastering phase noise measurements. Download the full article for information on the different phase noise techniques and their advantages and disadvantages.

46. Satellite Payload Pre-Launch Testing 2/16/2017

    At the beginning of 2015, around 1,200 satellites were fully operational in orbit around the planet, half of which were communication satellites. This application note focuses on RF component and module testing of satellite communication payloads using R&S instruments at pre-launch levels.

47. Mastering Phase Noise Measurements: Part 1 2/10/2017

    No matter the level of knowledge you possess, it is important to have a good understanding of phase noise basics and to learn new measurement techniques for improving designs. This application note is the first part in a series on mastering phase noise measurements.

48. Real-Time Radar Target Generation 10/18/2016

    As radar test systems are essential for the research, development, production, and maintenance of radar systems, it would be prudent to use one that has the ability to test the entire system including the antenna front end. This application note presents a solution from Rohde & Schwarz that is capable of testing the complete radar system.

49. Measurement Uncertainty Analysis And Traceability For Phase Noise 9/30/2016

    The phase noise performance of a communication system can determine its overall quality performance. Rohde & Schwarz has developed the R&S^®FSWP Phase Noise Analyzer and VCO tester with new capabilities that will simplify phase noise testing for radar applications and when developing and manufacturing synthesizers, OCXOs, DROs, and VCOs. This application note describes a new approach for measuring phase noise using direct down-conversion with cross correlation and focuses on traceability using a derived primary measurement standard.

50. Modulation And Signal Generation With R&S Signal Generators 8/11/2016

    The first part of this educational note presents the applications for and the most important types of signal generators. This is followed by a description of the construction and functioning of analog and vector signal generators.