1. Diab H, Temcamani F, Gautier JL (2002) Microwave active filter using finite gain amplifier. In: Proceedings of the 32nd European Microwave Conference, pp 1–4
2. Chi-Chang C, Itoh T (1990) A varactor-tuned, active microwave band-pass filter. In: IEEE MTT-S International Microwave Symposium 1990, pp 499–502
3. Trabelsi H, Cruchon C (1992) A varactor-tuned active microwave band pass filter. IEEE Microw Guided Wave Lett 2(6):231
4. Jiao et al XH (1990) Microwave frequency agile active filters for MIC and MMIC applications. In: IEEE MTT-S International Microwave Symposium 1990, pp 503–506
5. Moazzam MR, Aghvami AH (1991) Analysis and design of a novel microwave active filter. In: Proceedings of Ant. and Prop. Soc. International Symposium, 24–28 June 1991, pp 230–231