A spectral built-in self test (BIST) solution for integrated cellular RF transmitters is presented that enables on-chip verification of PLL spectral performance. Multi-tone FM test signals with a spurious-free dynamic range (SFDR) of 60 dB are generated without compromising the performance of the RF transmitter itself. The RF signal is demodulated and digitized in an on-chip digital FM discrimi...

This paper describes a feedthrough reduction technique for a track-and-hold (T/H) circuit with a body-bias control circuit. We propose a T/H circuit with a feedthrough canceller. This circuit cancels a leaking signal to the output node through the parasitic capacitance by using an opposite-phase signal. The simulation results using 90-nm CMOS technology demonstrate a feedthrough of −89.4 dB and...

This paper describes a 14-bit 2OMSPS switched-capacitor Stage Stae21t Sage N pipelined ADC that employs digital background calibration to N correct capacitor mismatch. The calibration concept is amenable to Digital correction Logic l_ Y implementation in SOC because it is digital in nature. The Digitalout calibration concept is demonstrated offline though in principle it can be included on-chip...

Substrate noise generated by digital circuits on mixed-signal ICs can disturb the sensitiveanalog/RF circuits, such as Low Noise Amplifier (LNA), sharing the same substrate. This paperinvestigates the adverse impact of the substrate noise on a high frequency cascode LNA laid out on alightly doped substrate. By studying the major noise coupling mechanisms, a new and efficientmodeling method is p...

Efficient simultaneous transmission of light with a power more than 2 W at wavelength 976 nm and an optical carrier for transmitting high-frequency analog signal 1550 over distance 1 km standard single-mode fiber was experimentally demonstrated. Electrical up to 350 mW (5 V, 70 mA) obtained from multi-junction silicon photocell, resulting in the efficiency about 70% photocell 25%. The did not a...

At the Paul Scherrer Institute (PSI) we are developing a high precision instrument to measure muon electric dipole moment (EDM). The experiment is based on frozen-spin method in which spin precession induced by anomalous magnetic suppressed, thus increasing signal-to-noise ratio for EDM signals achieve sensitivity otherwise unattainable using conventional g - 2 storage rings. expected statistic...

This paper proposes a new method for rejecting the Continuous Wave Interferences (CWI) in the Global Positioning System (GPS) receivers. The proposed filter is made by cascading an adaptive Finite Impulse Response (FIR) filter and a Wavelet Packet Transform (WPT) based filter. Although adaptive FIR filters are easy to implement and have a linear phase, they create self-noise in the rejection of...

Speech constitutes much of the communicated information; most other perceived audio signals do not carry nearly as much information. Indeed, much of the non-speech signals maybe classified as ‘noise’ in human communication. The process of separating conversational speech and noise is termed voice activity detection (VAD). This paper describes a new approach to VAD which is based on the Wavelet ...

Background: The electrocardiogram artifact is a major contamination in the electromyogram signals when electromyogram signal is recorded from upper trunk muscles and because of that the contaminated electromyogram is not useful.Objective: Removing electrocardiogram contamination from electromyogram signals.Methods: In this paper, the clean electromyogram signal, electrocardiogram artifact and e...

We have developed the effective algorithm for detecting digital binary phase-shift keyed signals. This algorithm requires a small number of arithmetic operations over the signal period. It can be relatively easy implemented based on the modern programmable logic devices. It also provides high interference immunity by identifying signal presence when signal-to-noise ratio is much less that its w...