Reliable and  $Q$ -Enhanced Floating Active Inductors and Their Application in RF Bandpass Filters | Zendy

Rishab Mehra | Zendy; Vikash Kumar | Zendy; Aminul Islam | Zendy

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-Enhanced Floating Active Inductors and Their Application in RF Bandpass Filters

Author(s) -

Rishab Mehra,

Vikash Kumar,

Aminul Islam

Publication year - 2018

Publication title -

ieee access

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.587

H-Index - 127

ISSN - 2169-3536

DOI - 10.1109/access.2018.2868181

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

This paper presents three new floating active inductor (FAI)-based bandpass filter (BPF) topologies, namely, the nominal-Q BPF (NQF), Q-enhanced BPF-1 (QF₁), and Q-enhanced BPF-2 (QF₂). The filters utilize voltage differencing transconductance amplifier (VDTA) as an active building block and are implemented in a 45-nm CMOS process. Negative resistance techniques are used to enhance the quality factor and an addition-based current reference technique reduces the sensitivity of filter's design metrics to process, voltage, and temperature (PVT) variations. The performances of the filters are analyzed in the presence of parasitics and analytical expressions are derived. The proposed filters consume minimal power, possess a high Q and good dynamic range, and are reliable despite being implemented in the nanoscale regime. The NQF/QF₁/QF₂ exhibits a center frequency of 4.36/3.63/3.02 GHz, quality factor of 17.84/54/46.2, the 3-dB bandwidth of 244.4/67.22/65.36 MHz, the dynamic range of 122.49/118.58/119.46 dB, and a 1-dB compression point of -3.06/-5.48/-5.45 dBm. The filter topologies consume 0.552/0.608/0.634 mW from ±1-V supply voltage. The above-mentioned parameters translate into a figure-of-merit FOM₁(FOM₂) of 125.07 dB-Hz/mW (80.59 dB)/120.74 dB-Hz/mW (81.33 dB)/121.44 dB-Hz/mW (79.81 dB) for NQF/QF₁/QF2.

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