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Rohde & Schwarz App Note: Generating Multiple Phase Coherent Signals

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Rohde & Schwarz App Note: Generating Multiple Phase Coherent Signals

Rohde & Schwarz App Note: Generating Multiple Phase Coherent Signals - RF CafeTesting multi-antenna systems such as phased array or beamforming antennas requires a test system capable of providing multiple signals with constant phase relationships between them. The coherent test signals must have a specific or definable phase difference (relative phase) and definable amplitude. Some of the challenges for such a test system include compactness, phase control capability and simplicity in handling. In particular, phase stability between the channels is of importance.

This application note explains how to generate phase coherent signals. It details what to consider and how to configure the test setup and describes in detail how to best calibrate the relative phases and timing between the individual channels and when to repeat the calibration.

About Rohde & Schwarz

Founded more than 80 years ago, Rohde & Schwarz is one of the world's leading manufacturers of information and communications technology products for professional users. Initially focusing on RF engineering and RF applications in test and measurement, radiocommunications and broadcasting, the company has continually expanded its fields of activity over the past decades. In the meantime Rohde & Schwarz has also become one of Germany's largest manufacturers of IT security products.

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Rohde & Schwarz USA, Inc.
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Posted April 17, 2018

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