Surface-Mount Circulator Fills 3.5-GHz WiMAX Needs

Aug. 14, 2008
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 ...

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.

About the Author

Jack Browne | Technical Contributor

Jack Browne, Technical Contributor, has worked in technical publishing for over 30 years. He managed the content and production of three technical journals while at the American Institute of Physics, including Medical Physics and the Journal of Vacuum Science & Technology. He has been a Publisher and Editor for Penton Media, started the firm’s Wireless Symposium & Exhibition trade show in 1993, and currently serves as Technical Contributor for that company's Microwaves & RF magazine. Browne, who holds a BS in Mathematics from City College of New York and BA degrees in English and Philosophy from Fordham University, is a member of the IEEE.

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