Tunable Floating Resistor Based on Current Inverting Differential Input Transconductance Amplifier
Zainab Haseeb, Dinesh Prasad, Mainuddin  , M. W. Akram

Circuits Syst. Vol.11 No.5, May 29, 2020
DOI: 10.4236/cs.2020.115005

CMOS Realization of VDVTA and OTA Based Fully Electronically Tunable First Order All Pass Filter with Optimum Linearity at Low Supply Voltage ± 0.85 V
Ghanshyam Singh

Circuits Syst. Vol.11 No.4, April 30, 2020
DOI: 10.4236/cs.2020.114004

A High-Speed DLL-Based Hybrid Phase Conjugator for 5G Beamforming
Michael Bolt, Mark Adams

Circuits Syst. Vol.11 No.3, March 31, 2020
DOI: 10.4236/cs.2020.113003

CMOS Realization of VDTA Based Electronically Tunable Wave Active Filter with Minimum Power Consumption at Low Supply Voltage ±0.82 V
Ghanshyam Singh

Circuits Syst. Vol.11 No.2, February 28, 2020
DOI: 10.4236/cs.2020.112002

A Multimedia Based Virtual Learning System: A Panacea for Nigerian Tertiary Institutions
Emmanuel Nwabueze Ekwonwune, Chidiebere Chukwuma Oparah

Circuits Syst. Vol.11 No.1, January 31, 2020
DOI: 10.4236/cs.2020.111001