Microelectronics, Volume. 53, Issue 3, 425(2023)
A High Linearity Active Inductor with Enhanced Q-f and L-f Characteristics
A novel high linearity active inductor with enhanced characteristics of quality factor (Q)-frequency (f) and inductance value (L)-frequency (f) was proposed, which is mainly composed of a negative transconductor, a novel positive transconductor, a Q-enhanced modulation module, a feedback resistance, a two-stage level shift circuits and a negative transconductor shunt branch. By the cooperation among the above multiple circuit units and the joint tuning of the constructed three external bias terminal voltages, the active inductor not only had a high Q values and had ability to make the Q values be able to be ajusted independently relative to the inductance values, but also the high Q peaks and inductance values could remain almost unchanged at different frequencies, and at the same time had high linearity. The verification results show that at 6 GHz, the Q value can vary from 275 to 4 471 with the tuning percentage of 1768%, while the inductance value variation is only 15%; at the operating frequencies of 48 GHz, 52 GHz, 56 GHz and 6 GHz, the Q peak values of 4 480, 4 469, 4 473 and 4 471 with a variation of only 024% are obtained, respectively, while the inductance values are 7532 nH, 7467 nH, 7909 nH and 7977 nH with a change of only 63% respectively; the -1 dB compression point of the inductance value is -13 dBV.
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GAO Wenjing, ZHANG Wanrong, WANG Xiaoxue, LI Nanxing, REN Yangui, WU Yinfeng. A High Linearity Active Inductor with Enhanced Q-f and L-f Characteristics[J]. Microelectronics, 2023, 53(3): 425
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Received: Jul. 26, 2022
Accepted: --
Published Online: Jan. 3, 2024
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