An on-chip low power low phase noise VCO with frequency divider for low jitter low phase noise applications (original) (raw)

Design of a 2.2-4.0 GHz Low Phase Noise and Low Power LC VCO

This paper reports a design of an integrated Voltage Controlled Oscillator (LC-VCO) with high oscillation frequency, Low power consumption and Low Phase noise. For obtaining the performance parameters, the design was simulated in 0.18µm CMOS technology. Results of the present deign shows that the oscillation frequency of VCO is 2.2GHz to 4.0 GHz; the power consumption of the VCO at oscillation frequency of 2.2GHz is 16.13 mw and phase noise-143 mdb/HZ. In addition at 3.3 GHz and 4.0 GHz is 15.76 mW and 15.31mW with phase noise -151 mdb/Hz and -207mdb/Hz respectively. We have compared the results of the present design with earlier published work and is presented in table 1.

A Completely Integrated 2.7GHz Voltage Controlled Oscillator with Low Phase Noise

2001

The implementation of a low-phase-noise and low-cost VCO is discussed. The VCO uses on-chip schottky diode varactors and regular bondwires for its resonator. The VCO was implemented for the local oscillator (LO) of a GPS receiver. The VCO oscillates at 2.7-GHz which is double the LO. This frequency is divided to generate I and Q components of the LO. The core VCO uses MOS devices and can easily be integrated in any standard CMOS process with better performance. Regular bondwires used to form the resonator makes the design compact and cost-effective. Also the high-Q bondwire inductance helps reduce the power and phase noise. An automatic amplitude control (AAC) loop has been used to control the amplitude of the oscillation. The implemented VCO has a phase noise of -112dBc/Hz at an offset of 200kHz from the 2.7GHz carrier and the core consumes 2.5mA from a 3V supply.

A Low Phase Noise, Power Efficient Voltage Controlled Oscillator using 0.18-µm CMOS Technology

2015

— A low phase noise, power efficient VCO using UMC 0.18µm CMOS technology has been proposed in this paper. The proposed VCO has a tuning range of 9.71GHz to 9.9GHz, with a phase noise of-79.88 dBc/Hz @ 600kHz offset. The Vtune ranging between 1V- 1.5V generates sustained oscillations. The maximum power consumption of the VCO is 11.9mW using a supply voltage of 1.8V with ±10 % variation.

FULLY-INTEGRATED 2.4GHz VCO WITH LOW PHASE-NOISE

This paper presents a fully-integrated voltage controlled oscillator working in the 2.45GHz ISM band. It uses the standard differential design as it gives major advantageshigh suppression of noise on the power supply lines, better start-up for a given power consumption. The oscillator achieves very low phase noise of -123dBc/Hz at 1MHz offset from the carrier. Emitter degeneration technique is used to improve the phase noise over the standard design. The power consumption of the oscillator is 8mA from a 3V power supply. The output voltage amplitude is 800mV. The tuning frequency range is 2.38-2.68GHz and the tuning voltage is from 2V to 3 V.

Design method for low-power, low phase noise voltage-controlled oscillators

2007 European Microwave Integrated Circuit Conference, 2007

This paper presents a design method for voltage controlled oscillators (VCOs) with simultaneous small size, low phase noise, DC power consumption and thermal drift. We show design steps to give good prediction of VCO phase noise and power consumption behavior: (1) measured resonator frequencydependent parameters; (2) transistor additive phase noise/ noise figure characterization; (3) accurate tuning element model; and (4) bias-dependent model in case of an active load. As an illustration, the design of a 3.4-GHz bipolar transistor VCO with varactor tuning is presented. Oscillator measurements demonstrate low phase noise (-40dBc@100Hz and better than-100dBc@10kHz) with power consumption on the order of a few milliwatts with a circuit footprint smaller than 0.6cm 2. The temperature stability is found to be better than +/-10ppm/°C from-40°C to +30°C. The oscillators are implemented using lowcost off-the-shelf surface-mountable components, including a micro-coaxial resonator. The VCO directly modulates the current of a laser diode and demonstrates a short-term stability of 10 2 10 / τ − ⋅ when locked to a miniature Rubidium atomic clock.

Design and performance analysis of low phase noise LC-voltage controlled oscillator

TELKOMNIKA, 2023

Voltage controlled oscillator (VCO) offers the radio frequency (RF) system designer a freedom to select the required frequency. Today's wireless communication system imposes a very stringent requirement in terms of phase noise generated in VCO. This study presents an inductive source degeneration technique to improve the phase noise performance of the inductance-capacitance (LC)-VCO. Double cross-coupled topology has been chosen for the proposed VCO. The post layout simulations with the parasitic resistance, inductance, capacitance (RLC) extracted view is carried out with united microelectronics corporations (UMC) 0.18 µm process by spectre simulator of cadence tools. The proposed VCO provides a phase noise of-124.3 dBc/Hz @ 1 MHz. The tuning range obtained is 19.87% with a centre frequency of 2.46 GHz which makes it suitable for industrial, scientific, and medical (ISM) band applications. It consumes a power of 2.10 mW. Also, a good figure of merit of-189 is achieved. The total layout area occupied is 477×545 µm 2 .

A Low Power Low Phase Noise LC Voltage-Controlled Oscillator

Progress In Electromagnetics Research Letters, 2013

A low phase noise CMOS complementary cross-coupled LC-tank voltage-controlled oscillator (VCO), implemented with TSMC 0.18 µm 1P6M CMOS technology, is presented. Double pair pseudoresistance transistors biased by the tapped center of the inductor are utilized to reduce the DC bias current. The circuit consumes 1.55 mA from a 1.5 V supply voltage which saves up to 52.4% power, compared with the conventional one. Furthermore, an adaptive body biasing technique (ABB) is used to overcome the effect of PVT variations. The VCO is tunable from 2.58 to 3.07 GHz and has a phase noise −122.7 dBc/Hz at 1 MHz offset from the 3 GHz carrier. The Figure of Merit (FOM) of the proposed VCO is −188.8 dBc, and the figure of merit including the tuning range (FOM T ) is −193.5 dBc.

Low phase noise CMOS voltage-controlled oscillators

2007

Design considerations and performance comparisons for several low phase noise CMOS voltagecontrolled oscillator (VCO) topologies are presented including the Hartley, quadrature Colpitts, Clapp, and tuned-input tunedoutput configurations. An indirect approach for high-frequency signal generation using a VCO coupled with a 2X passive frequency multiplier is also described. Several of the structures are attractive alternatives to the conventional LC tank VCO.

Design and Simulation of Low Phase Noise Voltage-Controlled Oscillator

International Journal of Machine Learning and Computing, 2011

This paper presents the design and simulation of a low phase noise voltage-controlled oscillator (VCO). The oscillator is based upon the classic LC-tuned negative-resistance topology, with a passive inductor. A fundamental relationship of the channel length of MOS transistors in LC tanks VCO and the phase noise is presented. The proposed VCO in the 0.18μm process is designed which is suitable for system integration in transceiver designs. Using this process, complete pattern VCO is designed in ADS. It operates in the 5.5 GHz frequency range with a 1.8V power supply. The power consumption is 7.592mW. The VCO’s phase noise level is -106.4dBc/Hz at 1MHz offset.

A low phase noise 10 GHz VCO in 0.18/spl mu/m CMOS process

2005 European Microwave Conference, 2005

A fully integrated 10 GHz LC voltage controlled oscillator is presented. The VCO is implemented in 6 metal 0.18 m CMOS process. The VCO achieves a wide tuning range of 20.1% (10.20 GHz to 12.48 GHz), and provides an output power of -3 dBm, while drawing 22.7mA from 2.2V power supply. The measured phase noise is -125.33 dBc/Hz at 1 MHz offset from the carrier at 10.3GHz. The VCO figure of merit is a record low -188 dBc/Hz.