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SPDT Switches Control 18 GHz

Feb. 19, 2014
A pair of high-speed surface-mount SPDT switches exhibit low insertion loss from DC to 18 GHz.

A pair of single-pole, double-throw (SPDT) nonreflective GaAs switches has been developed for applications from DC to 18 GHz. Both are supplied in compact 3 × 3 mm RoHS-compliant surface-mount-technology (SMT) housings, differing essentially in insertion-loss performance. Model CMD195C3 exhibits typical insertion loss of 2 dB across its full frequency range, with typical isolation of 37 dB. It has switching speed of typically 1.8 ns and handles +25 dBm typical input power at 1-dB compression. It is controlled with 0 and -5-VDC voltage lines and requires no bias supply. Model CMD196C3 trims typical insertion loss to 1.5 dB through 8 GHz and 1.8 dB through 18 GHz, with similar electrical performance across an operating temperature range of -40 to +85°C. The switches boast typical input third-order intercept point (IP3) of +37 dBm and are well suited for use in broadband microwave radios.

Custom MMIC Design Services, Inc., 1 Park Dr., Unit 12, Westford, MA 01886; (978) 467-4290, FAX : (978) 467-4294.

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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