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SALES@QUINSTAR.COM         +1 310.320.1111         

ISO9001:2015 & AS9100D         SUBMIT RFQ          CAREERS



Low pass-band insertion loss, high out-of-band rejection, wide range of bandwidth options.

For further information, please contact us at



Specifications and Ordering

Our designs are built onsite and upon request. We tailor each order through our sales engineers to better serve your purchase.


QuinStar’s QFB Bandpass Filters are available in ten waveguide bands covering the frequency range of 18 – 220 GHz. A bandpass filter allows signals between two specific frequencies to pass, but blocks signals at other frequencies. Bandwidths may be specified from 2% to 20% of center frequency. The filters can handle up to one Watt (CW) of RF power. Standard versions are for 2%, 5%, and 10% passband bandwidth. The design ripple is typically 0.1 dB with a Chebychev (equal ripple amplitude) response. We offer high out-of-band rejection with customer-specific attenuation characteristics on bandpass filters.

Since filter requirements vary widely, QuinStar Technology customizes products in a short turnaround time. Contact or submit an RFQ.

In addition to QFB, see our complete lineup of filter products here.

Ordering Information


Contact us at for ordering information or submit an RFQ.