Substrate-Suspended Air Cavity Resonator and Its Application in Low Phase Noise Oscillator

Ultra-low-noise Cavity-stabilized Microwave Reference Oscillator Using an Air-dielectric Resonator

Ultra-low-noise microwave oscillators are often required to serve as reference signals in precision phase modulation (PM) noise measurement systems and in a host of other applications. We have significantly improved the spectral purity of NIST’s traditional cavity-stabilized microwave oscillator design, which uses a conventional air-dielectric cavity resonator as a frequency discriminator. We d...

Low-Power, Low-Phase-Noise CMOS Voltage-Controlled- Oscillator with Integrated LC Resonator

The recent rapid growth in demand for wireless communications has been a strong motivation for designing more highly integrated RF ICs like low-noise amplifiers (LNAs), upand down-frequency converters, voltagecontrolled oscillators (VCOs), and frequency synthesizers into a single die with low power consumption and cost, while meeting performance requirements for wireless communications systems....

Voltage-Controlled Ring Oscillator for Low Phase Noise Application

A design for a voltage-controlled ring oscillator (VCO) is presented. The design allows an implementation of low frequency ring oscillator using relatively small devices and less stage. It is implemented using .18um technology provided by TSMC technology using 3.3V power supply. The VCO topology exhibits a very wide tuning range from few Hz to 368.9 MHz. It also features the rapid voltage swing...

Low Phase Noise Voltage - Controlled Oscillator

A Low Power Low Phase Noise Oscillator for MICS Transceivers

A low-power, low-phase-noise quadrature oscillator for Medical Implantable Communications Service (MICS) transceivers is presented. The proposed quadrature oscillator generates 349~689 MHz I/Q (In-phase and Quadrature) signals covering the MICS band. The oscillator is based on a differential pair with positive feedback. Each delay cell consists of a few transistors enabling lower voltage operat...