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YIG Band-Reject Filters Span 2 To 18 GHz

Jan. 29, 2009

In a 1.4-in. cube package, the MLFRD series of dual-channel band-reject filters target broadband receivers and a variety of electronic-warfare (EW) system applications. These filters offer more than 40 dB rejection over tightly controlled rejection bands to suppress unwanted signals. Rejection bands can be tuned over standard frequency bands of 2 to 6, 2 to 8, 6 to 18, and 8 to 18 GHz. In standard designs, tunable 3-dB bandwidths are 120 MHz with 40-dB bandwidths of 5 to 15 MHz available. The 6-to-18-GHz MLFRD-0618, for example, provides a 40-dB rejection bandwidth of 15 MHz minimum. The 40-dB rejection bandwidths are as wide as 35 MHz with 3-dB bandwidths as wide as 100 MHz. With passband voltage standing wave ratio (VSWR) ranging to 2.10:1, the filter exhibits passband insertion loss to 2.0 dB.

About the Author

Nancy Friedrich | RF Product Marketing Manager for Aerospace Defense, Keysight Technologies

Nancy Friedrich is RF Product Marketing Manager for Aerospace Defense at Keysight Technologies. Nancy Friedrich started a career in engineering media about two decades ago with a stint editing copy and writing news for Electronic Design. A few years later, she began writing full time as technology editor at Wireless Systems Design. In 2005, Nancy was named editor-in-chief of Microwaves & RF, a position she held (along with other positions as group content head) until 2018. Nancy then moved to a position at UBM, where she was editor-in-chief of Design News and content director for tradeshows including DesignCon, ESC, and the Smart Manufacturing shows.