3.5GHz RF couplers target 5G applications

4th August 2020
Mick Elliott

Design and sales support for a series of surface mount couplers from RN2 have been announced by distributor RFMW.

The RN2 CMX35 series of couplers offer power handling and coupling factor options for 3.5 GHz, 5G radio systems.

Offered in three different sizes, the P series is the smallest at 2 x 1.25 mm and can handle 5 Watts of RF power over a span of 3.3 to 4.2 GHz.

The E Series measures 5.08 x 3.18 mm with power handling to 25 Watts over the same frequency span and the Q Series is 6.35 x 5.08 mm with power handling to 100 Watts from 3.3 to 3.8 GHz.

As an example, the CMX35P03 is a hybrid, 3 dB coupler spanning 3300 to 4200 MHz with 20 dB isolation, 0.3 dB insertion loss and capable of handling 5 Watts average power.

RN2 offers coupling factors of 2, 3, 5, 10, 20 and 30 dB as well as asymmetric 2/5 dB coupling for asymmetric Doherty power amplifier designs.

The variety of sizes, power handling and coupling factors offer splitting and combining in standard and Doherty power amplifier designs, RSSI circuits and feedback loops for 5G NR.

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