KRYTAR Inc. has developed a directional coupler covering 10 to 110 GHz with an exceptionally flat 10 dB coupling across the full bandwidth. The model 1100110010 achieves coupling of 10 ±1.5 dB from 10 to 90 GHz and 10 ±1.8 dB from 90 to 110 GHz. Frequency sensitivity (amplitude flatness) is typically ±1.25 dB from 10 to 90 GHz and ±1.80 dB from 90 to 110 GHz. Directivity is ≥ 10 dB from 10 to 55 GHz and ≥ 7 dB - typically 10 dB - from 55 to 110 GHz.
This stripline design with standard 1 mm SMA female connectors has an insertion loss of 5.5 dB maximum across the band, including the coupled power. At any port, the maximum VSWR is 1.8:1 from 10 to 50 GHz and 2.5:1 from 50 to 110 GHz. For applications requiring multiple couplers on multiple channels, such as antenna beamforming, the unit-to-unit coupling tolerance is within ±1.50 dB across the full 10 to 110 GHz.
This new directional coupler is extremely compact, measuring 1.55 in. x 0.38 in. x 0.80 in., and weighs 1.2 ounces. It will withstand an input power of 20 W average and 3 kW peak. The operating temperature range is from −54°C to +85°C.
The 1100110010 is well-suited for wireless designs and test and measurement systems for the emerging mmWave and 5G markets, antenna beamforming and electromagnetic compatibility (EMC) testing. The coupler can be manufactured to meet military specifications, for use in electronic warfare (EW) and other military systems.
Founded in 1975 and privately owned, KRYTAR develops broadband microwave components and test equipment for commercial and military applications. Products include directional couplers, detectors, hybrids, power dividers/combiners, terminations, coaxial adapters and a power meter and power sensors.