Wide Pass Bandwidth, High Selectivity, Continuously Tunable Notch Filters

SBIR · Phase: BOTH · Topic DAF27BZ02-DV025 · Solicitation 27.BZ

The objective of this topic is to develop miniature, low power, and high selectivity tunable notch filters capable of protecting wideband receivers from large interferers. The effort will target the largest interferers which are in L, S, C, and X bands with tunable notch filters, while allowing pass bandwidths spanning L through Ku bands. Each notch filter must be continuously tunable across a minimum of 3 of the 4 targeted bands (L, S, C, and X) while having a notch depth > 20 dB and a notch bandwidth < 1 % across all tuned frequencies. With a narrow notch bandwidth, each notch filter must be programmable and maintained with an accuracy of 50% of the notch bandwidth and should maintain this accuracy over temperature. The notch filters must be able to reject large interfering signals and therefore should be able to notch receive interference levels greater than 5 dBm. In the bandpass each filter must cover L-Ku band (1-18 GHz) while maintaining a low insertion loss and noise figure of less than 1.5 dB and low passband distortion with an IIP3 > +50 dBm. Each notch filter must be small, less than 3 cc, and should be connectable in series without interfering with one another to notch multiple frequencies in the same receive chain. Finally, the power consumption, including any tuning electronics, of each notch filter should be less than 100 mW. The required metrics are: Passband frequency range (GHz)1 – 18 Maximum passband insertion loss or noise figure (dB) ≤ 1.5 Passband IIP3 (dBm)≥ 50 Notch band tunable frequency range (GHz)1 – 12 Number of bands covered by a single, continuously tunable notch≥ 3 Minimum notch depth across all tuned notch states (dB)≥ 20 Maximum notch fractional bandwidth (%)≤ 1Size (cc)≤ 3 Power consumption (mW)≤ 100

SBIR/STTR 은 미국 중소기업만 지원할 수 있습니다(Small Business Act 법정 요건). • 계열사를 포함해 상시 종업원 500명 이하 • 미국 시민 또는 영주권자 1인 이상이 50%를 초과해 직접 소유·지배 • 미국 내 사업장을 두고 주로 미국 내에서 사업을 영위할 것 • 수행책임자(PI)의 주된 근무처가 신청 기업일 것 출처: https://www.sbir.gov/faq/eligibility-requirements

Primary country

🇺🇸 United States

Also eligible

None

Foreign companies

No

Local entity

Required

Location condition

미국 내 사업장을 두고 미국 시민·영주권자가 50%를 초과해 소유한 중소기업만 신청할 수 있습니다(법정 요건).

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Official URL

https://www.dodsbirsttr.mil/topics-app/

Application URL

https://www.dodsbirsttr.mil/topics-app/

Last fetched

2026.11.06

Human review

Not reviewed — check the official announcement

First seen

2026.11.06

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