A Tuneable Active Inductor With High Dynamic Range for Band-Pass Filter Applications

作者：Leuzzi Giorgio^*; Stornelli Vincenzo; Del Re Stefano

来源：IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2011, 58(10): 647-651.

DOI：10.1109/TCSII.2011.2164145

• Active filter
• active inductor (AI)
• gyrator
• high dynamic range

An approach for the design of high-Q active inductor (AI) with high dynamic range is presented. The proposed AI includes a passive variable phase- and amplitude-compensating network and a highly linear inverting amplifier, forming a gyrator-C architecture. The equivalent inductance and resistance values are tunable in a wide frequency range; outside the operating frequency band, the inductor equivalent resistance increases, improving signal rejection for band-pass filter applications. As a feasibility demonstration, a first-order active band-pass filter using the high-Q active inductance has been fabricated and tested. The filter has a center frequency of 600 MHz and a measured noise figure of 11 dB with a 5-dBm 1-dB compression point and an 82-dB dynamic range.

• 出版日期2011-10