An application-specific 20-dB coupler has been developed by Response Microwave for use in Long-Term-Evolution (LTE) fourth-generation (4G) cellular distribution systems. The coupler operates from 800 to 5800 MHz with typical insertion loss of 0.3 dB and minimum directivity of 23 dB. The coupling flatness is within 1 dB of the 20-dB value and the maximum VSWR is 1.15:1. The rugged coupler can handle input power levels as high as 50 W CW and is equipped with SMA female connectors. It is supplied in a compact housing measuring 3.9 x 1.5 x 1.02 in. and can operate at temperatures from -35 to +80C.
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20-dB Coupler Serves LTE
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Wednesday, April 3rd, 2013, 2:00 pm ET. Gallium nitride (GaN) has come a long way over the past few years in terms of affordability, industry acceptance and, in particular, reliability. In this webcast roundtable, a panel of expert speakers will assess the current state of GaN reliability, along with offering predictions for its future.
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