
IMS 2025 (IEEE MTT-S International Microwave Symposium), the world’s largest gathering and industry exhibition for RF & Microwave professionals, took place in San Francisco, California, last week from 17-19 June. The event consisted of over 500 companies showcasing their products and capabilities. This article highlights some interesting waveguide products showcased at the event.
Here is a list of interesting Waveguide Component products from various manufacturers that are being featured at IMS 2025.

High-Power S-Band Waveguide Circulators and Isolators for 2.45 GHz
Advanced line of high-power S-band waveguide circulators and isolators that operate at 2.45 GHz. These circulators and isolators are available with fast delivery in standard sizes, including WR284 (R32), WR340 (R26), and WR430 (R22). Other high-power waveguide components and RF technology solutions are available from WR90 to WR2300+.
Microwave Techniques
WR284 8-Way Coaxial Radial Power Combiner
This 8-way radial combiner plays an indispensable role in the field of microwave & space technology, serving as a crucial component in communication and military radar systems. These intricate devices are pivotal for combining power from multiple input sources into a singular high-power output signal. It can handle more than 450 kW of power, marking a massive advancement in radial combiner technology.
Scientific Microwave Corporation
Compact Tx/Rx Module for Full W-Band (75–110 GHz)
The AT-6MIX-75110L is an up-and-down fundamental mixer integrated with a 6x active frequency multiplier chain covering the full W-band. This mixer is based on GaAs MMIC technology with an IF input port frequency range from DC to 25 GHz with an SMA connector. The LO is SMA with a 6x Frequency multiplier inside, and the RF Port is WR-10.
AT Microwave
Waveguide Relay Switches from 5.85–40 GHz
Waveguide electro-mechanical relay switches for C to Ka-band (5.85–40 GHz) applications with SPDT/DPDT configurations, TTL logic, and latching self-cutoff actuators. Featuring up to 12 kW CW power handling, 0.01 dB insertion loss, and 105 dB isolation, they operate from -40°C to +85°C. Rugged, weatherized, and ready to ship, they are ideal for radar, SATCOM, and EW systems.
Pasternack
WR229 Bandpass Filter for C-band Satellite Receive Applications
The 21151 is a WR229 bandpass filter for C-band satellite receive applications and offers low insertion loss from 3.8 to 4.8 GHz and 65 dB attenuation of mid-range terrestrial 5G signals. It is ideal for eliminating interference from 5G, Radar, and virtually all out-of-band interference. This filter is 100% tested, environmentally sealed, and moisture resistant.
Microwave Filter Corporation
TVAC Waveguide to Coax Adapters up to 110 GHz
Thermal-Vacuum (TVAC) testing is increasingly demanded at the component and sub-assembly levels to demonstrate air and space worthiness. TVAC test chambers must provide temperature-controlled, high-vacuum operating environments with no outgassing from RF cables and adapters. To support the rapid development and deployment of TVAC test systems, Eravant has developed coaxial to waveguide adapters capable of operating at vacuum levels as low as 10-8 Torr at frequencies as high as 110 GHz.
Eravant