Voltage Controlled Oscillator Realisation with Temperature and Source Independent Circuits

Authors : Müslüm Gür, Yunus Babacan

Pages : 797-810

Doi:10.18185/erzifbed.1510542

View : 55 | Download : 120

Publication Date : 2024-12-31

Article Type : Research Paper

Abstract :In this article, a square wave was generated with a voltage-controlled oscillator circuit (VCO) using a bandgap reference voltage circuit and a low drop-out (LDO) circuit. The band gap reference circuit can generate a constant 500mV voltage between -40⁰C and +125⁰C. The LDO circuit is driven by a bandgap reference voltage circuit and exhibits a stable output even at different voltage levels. The last circuit, VCO, is driven by the LDO circuit. It can generate square waves between 1200MHz and 1600MHz at the output. Simulations using 130nm TSMC technology parameters have been successfully achieved.
Keywords : Bandgap reference voltage circuit, Low dropout regulator circuit, Voltage controlled oscillator circuit.