Compact Filter Passes 3.875 GHz

Oct. 21, 2013

A bandpass filter with a center frequency of 3.875 GHz and a passband of 2.25 GHz achieves low insertion loss.

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Model BPF3D875-2D25-CD-SFF is a bandpass filter with a center frequency of 3.875 GHz and a passband of 2.25 GHz. The coaxial filter exhibits maximum VSWR of 2.0:1 across the full passband. The maximum passband insertion loss is 2 dB. The filter, which measures only 2.50 x 0.8 x 0.5 in. with SMA female connectors, is rated for input power levels as high as 2 W (+33 dBm) CW. The filter is designed for use across an operating temperature range of -55 to +90°C.

Planar Monolithics Industries, Inc., 7311-F Grove Rd., Frederick, MD 21704; (301) 662-5019, FAX: (301) 662-1731.

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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.