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MMIC Filter Die Stops Reflections

June 19, 2019

A line of MMIC highpass filters developed by Mini-Circuits provides reflectionless rejection of signals in the stopband.

Jack Browne

The X-Series of reflectionless monolithic-microwave-integrated-circuit (MMIC) filters includes two- and three-section filters with as much as 50-dB stopband rejection. The compact filters, with passbands from dc to 21 GHz and stopbands as high as 26 GHz, employ a patented filter topology to eliminate stopband reflections, which can be sources for intermodulation distortion (IMD). The filters team well with sensitive reflective components, such as mixers and multipliers, as well as wideband amplifiers. Model XHF-652M-D+ is one example. The RoHS-compliant highpass filter has a passband of 6.6 to 11.0 GHz and stopband of dc to 5 GHz; typical stopband rejection is 38 dB. The 50-Ω filter die, which measures 1400 × 1400 µm, operates from −55 to +105°C.

Mini-Circuits, P. O. Box 350166, Brooklyn, NY11235-0003; (718) 934-4500

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.