A Performance Comparision of OTA Based VCO and Telescopic OTA Based VCO for PLL in 0.18um CMOS Process

Design of Gate-Driven Quasi Floating Bulk OTA-Based Gm–C Filter for PLL Applications

The advancement in the integrated circuit design has developed the demand for low voltage portable analog devices in the market. This demand has increased the requirement of the low-power RF transceiver. A low-power phase lock loop (PLL) is always desirable to fulfill the need for a low power RF transceiver. This paper deals with the designing of the low power transconductance- capacitance (Gm-...

A LOW POWER SERO BASED VCO IN 0,18-μm CMOS PROCESS

Original scientific paper A 3-stage single-ended ring oscillator (SERO) based voltage controlled oscillator (VCO) has been proposed to operate from 2,4 GHz to 5,42 GHz for short range wireless communication systems, such as Wi-Fi, Bluetooth and Zigbee. Single-ended delay cell has been adopted to form the proposed VCO in standard 0,18-μm CMOS process. This VCO consumes only 664,51 μW of power. T...

Design of CMOS Ring VCO for PLL based Frequency Synthesizer using different aspect ratios of MOS transistors

Low Noise Low Power CMOS Telescopic-OTA for Bio-Medical Applications

The preamplifier block is crucial in bio-medical signal processing. The power intensive Operational Transconductance Amplifier (OTA) is considered, and the performance of preamplifier is studied. A low noise and low power telescopic OTA is proposed in this work. To reduce the noise contribution in the active load transistors, source degeneration technique is incorporated in the current stealing...

Diierential Pll for Wireless Applications Using Diierential Cmos Lc-vco and Diierential Charge Pump

ADi erentially controlled monolithic LC-VCO along with a di erential charge pump are used to implement a di erential PLL for substrate noise immunity. The di erential VCO control is achieved with minimal increase in the power consumption and without sacri cing the tuning range. In a 0.5 m CMOS technology the measured VCO phase noise is -119dBc @1.0MHz and the tuning range is 26% of the 1.25GHz ...