In order to operate in a satisfactory matter, a mixer needs to have well controlled amplitude, phase response, and group delay. Constant group delay is especially important in wireless and satellite communications systems and in applications involving high target resolution in surveillance systems. When mixers are used to measure group delay in frequency converters, some setbacks can occur if the local oscillator isn’t accessible...
This White Paper provides a general overview of different military and commercial radar systems. It also touches some typical measurements challenges on such systems and their components.There is a complementary application note, a new version of the 1MA127 which provides information on radar test and measurement to the main target groups A&D and Automotive. Addtionally it provides an overview of core radar-related products from Rohde & Schwarz.
With the recent introduction of the R&S®SMW200A microwave vector signal generator, Rohde & Schwarz now offers a novel approach to flexibly and conveniently generate multiple radar target echoes for systems up to 20 GHz. When used in combination with the R&S®FSW signal and spectrum analyzer, these commercial off-the-shelf (COTS) test instruments can be configured to support flexible radar target generation including range and target velocity emulation.
Differential devices offer advantages like noise immunity, low crosstalk, high integration density, and reduced power consumption. However, they also require special measurement capabilities. There are essentially two different measurement methods available: virtual measurements, and true differential measurements.
As Over The Air (OTA) measurements become more important in 5G technologies, Anritsu proposes a new measurement method for solving millimeter-wave OTA measurements that solves the current Far-Field Measurement (FFM) challenges, and helps to reduce measurement costs. Based on actual measurement results, Anritsu's Near-Field Measurement (NFM) method is capable of offering improved measurement sensitivity. Anritsu also introduces an NFM solution for the E-band using Non-Linear Transmission Line technology. This white paper discusses how Near-Field Measurement technology works, the advantages of using it, and comparisons between NFM and FFM measurement results.