To ensure proper performance in satellite transponders in the payload, on-orbit measurements must be made as part of maintenance. This app note focuses on satellite post-launch or on-orbit measurements, and monitoring strategies used for satellite functionality checks when running maintenance routines.
Many spectrum analyzers can detect phase noise levels automatically, making phase noise measurements a task without much thought. This paper discusses key aspects in determining phase noise measurements, and presents formulas and examples that may be used for simplifying measurements.
This application note provides an introduction to the practical uses of RTSAs to reveal important information about the performance of RF/microwave components, track down sources of interference, and monitor the spectrum for activity and security threats.
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...
Bird’s 7020 Power Sensor provides forward and reflected power measurement over a 350 MHz to 4.0 GHz frequency range. It’s ideal for a myriad of applications including, but not limited to: public safety, WiMAX/WLAN, analog broadcast, analog/digital cellular, tactical military, radar, avionics, analog/digital broadcast, GPS, Bluetooth, public safety, telematics, GSM, GPRS, EDGE, UMTS, HSDPA, and more.
What makes the HiPerTUNER™ broadband preselector unique is its ability to selectively filter a signal-of-interest in front-end receiver and transmit applications. It can also be used to provide RF filtering in software defined radios, in test bed development applications, to improve co-site radio performance, and more.
The Anritsu MA24105A Inline Peak Power Sensor is designed to take accurate average power measurements from 2 mW to 150 W and peak power measurements from 2 W to 300 W over the frequency range of 350 MHz to 4 GHz. The sensor employs a “dual path” architecture that enables True-RMS measurements over the entire frequency and dynamic range allowing users to measure CW, multi-tone and digitally modulated signals such as LTE, LTE-TDD, GSM/EDGE, CDMA, W-CDMA, WiMAX, TD-SCDMA, WLAN, and LTE. The forward direction path also include a 4 MHz bandwidth channel that has peak and comparator/integrator circuits that add measurement functions such as PEP power, crest factor, CCDF, and burst average power. Another detection circuit on the reverse direction adds reverse power measurement capabilities including reverse power, reflection coefficient (magnitude), return-loss, and SWR. The presence of a micro-controller along with signal conditioning circuitry, ADC, and power supply in the sensor makes it a complete miniature power meter.
The DSA800 series of spectrum analyzers collectively covers the 9 kHz to 1.5, 3.2, or 7.5 GHz frequency range. These systems feature a widescreen display, a compact design, and a simplified interface, making it ideal for benchtop or field apps in RF and wireless testing and production. The analyzers employ a Rigol digital IF filter to allow for smaller bandwidth settings and a reduction in displayed noise levels.
