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Switched Combiner

Fri, 05/30/2003 - 11:38am

Technical Research and Manufacturing announces a low loss, high power four-way switching combiner and divider in a single package. The unit offers isolation between combiner and divider module of greater than 90 dB. The power divider has more than 30 dB isolation between outputs to minimize amplitude and phase changes during switching from one to four amplifiers. The combiner, capable of 150 watts/channel, can sum coherent signals totaling 600 watts CW, with random peaks of 200 watts and is monitored by an optional internal – 50 dB coupler. The units have the ability for power summation without the loss associated with standard power combiners. This is achieved with four 50 Ω inputs connected to a compensated 50 Ω output. Each of the four RF inputs can be separately controlled with properly applied DC voltage, while maintaining good output match. Typical combiner loss is < 0.3 dB with amplitude balance of – 0.3 dB and phase balance< 4°. Operating frequency range is between 800 - 2200 MHz with a bandwidth of ± 2%.

www.technicalresearch.com; (603) 627-6000

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