Comparison of two low-noise CEO frequency stabilization methods for an all-PM Yb:fiber NALM oscillator

Reducing oscillator PM noise from AM–PM noise correlation

Introduction: In most oscillators, the close-to-the-carrier amplitude modulation (AM) noise is usually lower than the phase modulation (PM) noise and does not pose serious problems. However, in highperformance systems where every decibel of PM noise is important, the AM noise cannot be neglected. Numerous applications consider AM noise effects on the overall performance of an oscillator or a sy...

Low-noise high-resolution BAW-based high-frequency oscillator

The design of a 500 MHz oscillator in a 65 nm CMOS process using a 2 GHz bulk acoustic wave (BAW) resonator is presented. A digital frequency control is implemented using a switched capacitor bank in parallel to the resonator. The tuning range is up to 500 kHz with a minimum step of 200 Hz. The oscillator core uses a differential topology and is designed for low phase noise (2128 dBc/Hz at 100 ...

THESIS FOR THE DEGREE OF LICENTIATE OF ENGINEERING GaN HEMT Low Frequency Noise Characterization for Low Phase Noise Oscillator Design

Design of an S-band Ultra-low-noise Amplifier with Frequency Band Switching Capability

In this paper, an ultra-low-noise amplifier with frequency band switching capability is designed, simulated and fabricated. The two frequency ranges of this amplifier consist of the 2.4 to 2.5 GHz and 3.1 GHz to 3.15 GHz frequency bands. The designed amplifier has a noise figure of less than 1dB, a minimum gain of 23 dB and a VSWR of less than 2 in the whole frequency band. The design process s...

Deficit irrigation for corn: a comparison of two methods