An 18–19.2 GHz Voltage-Controlled Oscillator with a Compact Varactor-Only Capacitor Array

A 2.4 GHz Voltage Controlled Oscillator

Voltage controlled oscillators are essential building blocks in communication systems and are used as local oscillators to up and down-convert signals in an RF mixer. Despite the continuous improvement in the state of the art of CMOS VCO’s, they still remain the most critical blocks of RF transceivers. The most important parameters of a VCO are phase noise, power consumption and frequency tunin...

10-GHz wide tuning-range linear voltage- controlled oscillator

Simulation analysis of 2.4 GHz MEMS/NEMS voltage controlled oscillator

This paper presents the design and analysis of a novel 2.4 GHz Voltage Controlled Oscillator (VCO), with amplitude control and Q enhancement circuit, for wireless communication applications. The variable capacitors and the inductors were designed using ANSYS and imported through DAC components in ADS (Advanced Design software). Accurate simulation of the VCO was performed in the software enviro...

LOW-POWER 2.4/5.15-GHz DUAL-BAND VOLTAGE-CONTROLLED OSCILLATOR

We proposed a 2.4/5.15 GHz dual-band voltagecontrolled oscillator which consists of a voltage-controlled oscillator and an injection-locked oscillator. Its upper and lower band frequencies are 4.48 5.86 GHz and 2.24 2.93 GHz, respectively. With the power consumption of 3.2 mW, their phase noises are 115 and 121 dBc/Hz at 1 MHz offset. VC 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 5...

A Temperature Compensation Voltage Controlled Oscillator Using a Complementary to Absolute Temperature Voltage Reference

This paper presents a temperature compensation voltage controlled oscillator (VCO) based on Cross-Coupled pair and Colpitts structures which is suitable for military fields. Also, two inductors have been used for increasing the negative conductance. By using this method, start-up condition has been improved. Two varactors and a simple capacitor bank are applied for covering a wide tunning range...