70% Improvement in Q-factor of spiral inductor and its application in switched K-band VCO using 0.18 um CMOS technology

Islam Mansour, Marwa Mansour, Mohamed Aboualalaa, Ahmed Allam, Adel B. Abdel-Rahman, Mohammed Abo-Zahhad, Ramesh Pokharel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A novel technique for increasing the quality factor of the on-chip inductor is proposed in this paper. A high-quality factor shunt inductor is designed using the lower layers 5 and 3 in 0.18 um CMOS technology so the top layer is valid for other circuit components. The quality factor is improved by 70 % in the Ku, K and Ka-band compared to the single layer inductor. Furthermore, the proposed inductor has a compact area of about 0.0089 mm 2 . This shunt inductor is used with a switched MOS varactor capacitors to construct a switched notch filter which has a sharp skirt characteristic and can be used in the VCO circuits. Using this switched shunt inductor resonator, the phase noise of the VCO is enhanced by 8 dB compared to single layer inductor resonator, moreover, the frequency tuning range is doubled. The VCO achieves a wide tuning range of 2.5 GHz, the first band from 18.8 to 19.97 GHz while the second band from 19.96 to 21.3 GHz. The phase noise at 1MHz is -112.4 and -112.5 dBc/Hz at the low and high band and this results FoM of-192.2 and -192.5 at 19.9 GHz and 21.3 GHz, respectively. The figure of merit considering the frequency tuning range (FoM T ) is -194.4 dBc/Hz and the active VCO core area is 0.039 mm 2

Original languageEnglish
Title of host publication2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1133-1135
Number of pages3
ISBN (Electronic)9784902339451
DOIs
Publication statusPublished - Jan 16 2019
Event30th Asia-Pacific Microwave Conference, APMC 2018 - Kyoto, Japan
Duration: Nov 6 2018Nov 9 2018

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC
Volume2018-November

Conference

Conference30th Asia-Pacific Microwave Conference, APMC 2018
CountryJapan
CityKyoto
Period11/6/1811/9/18

Fingerprint

Variable frequency oscillators
Tuning
Phase noise
Resonators
Switched filters
Notch filters
Varactors
Networks (circuits)
Capacitors

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

Mansour, I., Mansour, M., Aboualalaa, M., Allam, A., Abdel-Rahman, A. B., Abo-Zahhad, M., & Pokharel, R. (2019). 70% Improvement in Q-factor of spiral inductor and its application in switched K-band VCO using 0.18 um CMOS technology. In 2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings (pp. 1133-1135). [8617138] (Asia-Pacific Microwave Conference Proceedings, APMC; Vol. 2018-November). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/APMC.2018.8617138

70% Improvement in Q-factor of spiral inductor and its application in switched K-band VCO using 0.18 um CMOS technology. / Mansour, Islam; Mansour, Marwa; Aboualalaa, Mohamed; Allam, Ahmed; Abdel-Rahman, Adel B.; Abo-Zahhad, Mohammed; Pokharel, Ramesh.

2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2019. p. 1133-1135 8617138 (Asia-Pacific Microwave Conference Proceedings, APMC; Vol. 2018-November).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Mansour, I, Mansour, M, Aboualalaa, M, Allam, A, Abdel-Rahman, AB, Abo-Zahhad, M & Pokharel, R 2019, 70% Improvement in Q-factor of spiral inductor and its application in switched K-band VCO using 0.18 um CMOS technology. in 2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings., 8617138, Asia-Pacific Microwave Conference Proceedings, APMC, vol. 2018-November, Institute of Electrical and Electronics Engineers Inc., pp. 1133-1135, 30th Asia-Pacific Microwave Conference, APMC 2018, Kyoto, Japan, 11/6/18. https://doi.org/10.23919/APMC.2018.8617138
Mansour I, Mansour M, Aboualalaa M, Allam A, Abdel-Rahman AB, Abo-Zahhad M et al. 70% Improvement in Q-factor of spiral inductor and its application in switched K-band VCO using 0.18 um CMOS technology. In 2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2019. p. 1133-1135. 8617138. (Asia-Pacific Microwave Conference Proceedings, APMC). https://doi.org/10.23919/APMC.2018.8617138
Mansour, Islam ; Mansour, Marwa ; Aboualalaa, Mohamed ; Allam, Ahmed ; Abdel-Rahman, Adel B. ; Abo-Zahhad, Mohammed ; Pokharel, Ramesh. / 70% Improvement in Q-factor of spiral inductor and its application in switched K-band VCO using 0.18 um CMOS technology. 2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2019. pp. 1133-1135 (Asia-Pacific Microwave Conference Proceedings, APMC).
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