A novel non-coherent binary phase shift keying (BPSK) demodulator featuring ultra-low power and high data rate is presented for inductively powered biomedical implants. The circuit is designed in the 0.18μm standard CMOS technology. Simulation results show that at a data transmission rate of 16Mbps, the power consumption of the circuit is as low as 6.3μW and 1.96μW at a supply voltage of 1.8V a...

A single sideband (SSB) demodulation method is described, in which frequency mixing is not required. The proposed method is based on the phase shift method, but no local oscillator is employed. The IQ demodulator is replaced with an envelope detector and an FM demodulator. It can replace the synchronous demodulation method, whch requires an expensive phase-locked loop for carrier recovery. Not ...

This works presents an integrated 0.18μm CMOS 2-PPM demodulator based on a switched capacitor network for an Energy Detection Impulse-Radio UWB receiver. The circuit has been designed using a top-down methodology that allows to discover the impact of low-level non-idealities on system-level performance. Through the use of a mixed signal simulation environment, performance figures have been obta...

We report on a novel cancellation technique, for reducing the nonlinearity associated with the tracking phase-modulator in recently proposed phase-locked coherent demodulator for phase modulated analog optical links. The proposed cancellation technique is input RF signal power and frequency independent leading to a significant increase in dynamic range of the coherent demodulator. Furthermore, ...

Quadrature modulator (demodulator) is used in transmitting (receiving) part of many devices. Modulator (demodulator) output signal can be influenced by unwanted amplitude, phase or DC offset imbalances. MATLAB simulations of imbalances compensation methods and the implementations of simulated methods on the programmable logic filed is a main subject of the paper. Implementations were done with ...

A direct conversion modulator-demodulator with even harmonic mixers for fixed wireless applications is presented. The circuits consist of even harmonic mixers (EHMs) realized with antiparallel diode pairs (APDPs). A communication link is set up to examine the overall performance of proposed modulator-demodulator. The transmission of 16-QAM signal with 110Mbps data rate over fixed wireless link ...

We demonstrate 3-Gb/s wireless link using a 60-GHz receiver front-end fabricated in 0.25-μm SiGe:C bipolar complementary metal oxide semiconductor (BiCMOS) and a mixed-mode quadrature phase-shift keying (QPSK) demodulator fabricated in 60-nm CMOS. The 60-GHz receiver consists of a low-noise amplifier and a downconversion mixer. It has the peak conversion gain of 16 dB at 62 GHz and the 3-dB int...

This report provides an introduction to the problem of analyzing the performance of satellite on-board regenerative repeaters. Two speci c group demodulator architectures are discussed: one based on a polyphase network followed by an FFT processor, and the other based on a chirp Fourier transform implemented using surface acoustic wave (SAW) devices. Due to imperfect ltering and channel separat...

 In this paper, we investigate, for the first time, the performance of a fullduplex (FD) relaying protocol, where a single-RF Spatial Modulation (SM) Multiple-Input MultipleOutput (MIMO) system is employed at the relay node. We refer to this protocol as SM-aided FD relaying (SM-FDR).  At the destination, a demodulator that takes advantage of the direct connectivity between the source and dest...

Pulse-Driven Gaussian Minimum Shift Keying (PDGMSK) was introduced[1] to facilitate a trade between bandwidth efficiency and receiver complexity when using the classical GMSK waveform. The waveform was purposely devised to converge, as data rate decreases, to SDPSK or DPSK without expanding the absolute bandwidth. This paper studies the optimal coherent demodulation of the PDGMSK waveform, and ...