On a Demonstration of Tuneable Active Filters in X-and V-bands

Tuneable Active Filter (TAF) is a microwave system which translates the "perfect" Intermediate Frequency (IF) filter bandwidth to the tune-able RF to notch the interference or to pick up a narrowband signal for a frequency-hoping receiver. TAF is useful in a considerable number of use cases. TAF on market offer a room for miniaturisation hence, we carried out laboratory simulations to address TAF practicalities, to prepare for a follow-on integration. We explain the TAF concept, list (some of) market examples, describe the working principle and provide laboratory simulation examples to address TAF practicalities. We provide the foreseen application's high-level requirements. We demonstrate TAF's successful operation in both X-band (L-band IF filter), V-band (crystal filter IF) clarifying particularities to access for the follow-on miniaturization, such as the signal leakage, the LO leakage, the harmonic suppression. Two built TAF demonstrators might serve for the follow-on work.