Surface-Mount Circulator Fills 3.5-GHz WiMAX Needs

A company well known for its work with waveguide components for millimeter-wave frequencies through 110 GHz, Dorado International Corp., has developed a tiny surface-mount-technology (SMT) microwave circulator for WiMAX applications at 3.5 GHz. Designed for use from 3.2 to 3.8 GHz, the model 3CDM635-4 circulator maintains 18 dB isolation across the band while keeping insertion loss to only 0.5 dB. Ideal for maintaining isolation between a WiMAX antenna and its transceiver circuitry, the compact circulator can handle 10 W RF power and exhibits VSWR of 1.30:1. The lead-free, RoHS-compliant component is compatible with standard reflow processes and automated pick-and-place machinery, and meets the IEEE 802.16 WiMAX specifications. It is designed for operating temperatures from -40 to +70C.

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