Microwave

Filtronic is aiming at satellite up-links with a 500W V-band linear RF amplifier. Called Prometheus, it was unveiled at the International Microwave Symposium this week. I combines gallium nitride (GaN) semiconductor with the company’s Cerus 32 solid-state power amplifiers. Bandwidth is 5.2GHz from 47.2 to 52.4GHz range, and typical saturated output power is 57dBm (500W) after a typical gain of 70dB. ...

University of British Columbia researchers are aiming at long-distance entangled quantum networks with a coherent microwave-to-optical photon converter, that can theoretically be fabricated on a silicon wafer. Such a network would have fibre optic long-distance communication, possibly many km long, connecting microwave qubits. “The technology could serve as a translator for quantum computers, enabling them to talk to each other ...

Mouser Electronics is stocking a 5G linear RF amplifier from Qorvo. QPA9822 is designed for 32-node mMIMO (massive multiple-input and multiple-output) antenna systems found in wideband 5G NR (new radio) with instantaneous signal bandwidths up to 530MHz, “making it ideally suited for the N77 band”, according to Qorvo. Ports are internally match to 50Ω over the 3.3 – 4.2GHz operating ...

SpacePath Communications has announced a 1.5kW C-band solid-state power amplifier, intended to displace travelling wave tubes in satellite up-links. “The outdoor SSPA is suited for replacing aging indoor TWTAs, enabling service providers to eliminate long waveguide runs by installing high-power amplifiers closer to the antenna,” according to the company. “An indoor rack mount version is also available that is only ...

Rohde & Schwarz is claiming to have invented a new test set-up for verifying power amplifier performance when connected to an antenna, which typically shows a dispersive impedance, by swapping the vector network analyser for an oscilloscope. It is based on the company’s RTP084 scope, equipped with the wide-band modulated load-pull option (RTP-K98) and paired with its SMW200A vector signal ...

We're talking about improving images from a telescope, the President of the EC, microwave energy, and a LEO broadband satellite constellation...

Toshiba has just released a 700MHz to 5GHz single-pole, double-throw antenna switch in a 1.9 x 1.9mm WCSP package. “TCWA1225G offers an input peak power of 46dBm – at 8dB PAR,” the company said. “This has been achieved by adopting Toshiba’s original CMOS process and optimising the internal switching circuitry.” The process also reduces insertion loss, typically to 0.6dB at ...

Richardson RFPD is stocking 0402 (1005 metric) glass sandwich resistors designed to work from dc to 40GHz. Made by Kyocera AVX, and called the UBR series, they measure 1 x 0.5 x 0.5mm and have a flexible termination. “‘Flexiterm’ is a surface-mountable, automotive-qualified termination that adds an extra margin of protection against damage due to flexure during installation,” according to ...

TDK has introduced a radio wave absorber material with more than 25% or biomass by weight. Called the IS-BP series, the foams are intended to line the ceiling, walls and floor of microwave anechoic chambers used to evaluate antennas and wireless communication equipment, as well as millimeter-wave radar for automated driving. They consist of polyethylene loaded with carbon, and there are ...

A University of Pennsylvania team has turned to yttrium iron garnet to build a non-volatile microwave filter than can be tuned across 3.4 to 11.1GHz. “What’s special about YIG is that it propagates a magnetic spin wave,” said research engineer Troy Olsson. The team is researching filters for 6G communication in ‘frequency range 3’ – FR3, 7 to 24GHz. “At these ...