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VHF CMOS integrated active inductor

VHF CMOS integrated active inductor

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The implementation of an RF CMOS active inductor is described. The circuit is based on a recently proposed CMOS GIC. The inductor loss is reduced by applying gain enhancement techniques based on cascoding. The proposed new inductors exhibit lower loss, high self-resonance frequency and wider inductive region. An RLC bandpass filter response is realised to verify the performance of the simulated inductor.

Inspec keywords: losses; VHF filters; inductors; circuit tuning; impedance convertors; active networks; poles and zeros; CMOS analogue integrated circuits; continuous time filters

Other keywords: CMOS integrated active inductor; RF active inductor; self-resonance frequency; generalised immittance convertor; inductor loss reduction; VHF tunable active inductor; CMOS GIC; simulated inductor; cascoding; RLC bandpass filter response; gain enhancement techniques

Subjects: CMOS integrated circuits; Active filters and other active networks

References

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      • K. Bult , G.J.G.M. Gielen . A fast-settling CMOS op-amp for SC circuits with 90-dB gain. IEEE J. Solid-StateCircuits , 6 , 1379 - 1384
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      • Setty, S., Toumazou, C.: `±1 Volt CMOS rail-to-rail operational amplifier', IEEE ISCAS, May 1995, 2, p. 1540–15432, .
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      • S. Hara , T. Tokumitsu , T. Tanaka , M. Aikawa . Broad-band monolithic microwave active inductor and its application tominiaturized wideband amplifiers. IEEE Trans. , 12 , 1920 - 1924
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      • Ismail, M., Wassenaar, R., Morrison, W.: `A high-speed continuous-time bandpass VHF filter in MOStechnology', Proc. 1991 IEEE Int. Symp. on Circuits and Systems, 1991, 3, p. 1761–1764.
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