Abstruct-A new LC voltagecontrolled oscillator circuit topology is proposed, in which the flicker noise generated by the tail transistor is noticeably reduced by utilizing the phenomenon of flicker noise intrinsic reduction due to switched biasing. A macro model of MOSFET under switched biasing is used to prove the idea. Circuit simulations are done on two oscillators with the same tail current...

The design of a double balanced CMOS downconversion mixer is presented with a novel calibration scheme for pulse injection flicker noise reduction. This self-biasing calibration technique enables the reduction of the mixers’ noise figure by over 20dB at baseband frequencies without any additional reference voltages, manual adjustment, or large inductors. This results in simpler IC testing and m...

20 Flicker perception was investigated using two-alternative forced-choice detection and discrimination tasks with four different 21 types of external noise: (1) broadband noise, (2) 5-Hz notched-noiseVbroadband noise with a 5-Hz band centered on the 22 signal frequency removed, (3) 10-Hz notched-noise, and (4) no external noise. The signal was a burst of 10-Hz sinusoidal 23 flicker presented i...

This paper describes a novel time domain noise model for voltage controlled oscillators that accurately and efficiently predicts both tuning behavior and phase noise performance. The proposed method is based on device level flicker and thermal noise models that have been developed in Simulink and although the case study is a multiple feedback four delay cell architecture it could easily be exte...

: Low-frequency flicker noise has been measured in a metal-semiconductor-metal (MSM) device made from a single strand of a single crystalline Si nanowire (diameter approximately 50 nm). Measurement was done with an alternating current (ac) excitation for the noise measurement superimposed with direct current (dc) bias that can be controlled independently. The observed noise has a spectral power...

We present the characterization of commercial tunnel diode low-level microwave power detectors at room and cryogenic temperatures. The sensitivity as well as the output voltage noise of the tunnel diodes is measured as functions of the applied microwave power. We highlight strong variations of the diode characteristics when the applied microwave power is higher than a few microwatts. For a diod...

with K, γ, constants, and γ ≈ 1. It is quite well accepted that the sources of low frequency noise are mainly carrier number fluctuations due to random trapping–detrapping of carriers in energy states, named ‘traps’, near the surface of the semiconductor. From some time ago, switched biasing has been proposed as a technique for reducing the flicker noise itself in MOSFET’s [1]. An intuitive exp...

The article deals with algorithms for signal and image processing in presence of interference from the underlying surface, flicker noise, and other types of interference with fractal properties. Models of fractal interference are considered on the basis of the statistical approach. Application of the fractal Brownian motion model with fractional dimension is proved for the statistical descripti...

T growing market of portable wireless communication systems, such as wireless (cordless and cellular) phones, wireless local area network (WLAN) and the global positioning system (GPS) has increased the need for low-cost and high-performance receivers. The zero intermediate frequency (ZIF) receiver is often used to avoid the image-frequency, but this architecture suffers from the flicker noise ...