a cheaper design. Since an LC-oscillator topology is mandatory to achieve a minimal current draw, the reduction of the number of coils has to be done in the LNA, the mixer and the quadrature generator. In this work, starting from the LNA-Mixer and VCO (LMV) cell topology [2], a single-coil low-power receiver shares the bias current among all the RF blocks of the analog front-end. The receiver p...

This paper presents a fully integrated multi-band frequency-synthesizer architecture. The synthesizer is a ∆Σ based fractional-N frequency synthesizer with three on-chip LC tuned VCOs to cover the entire frequency bands specified in IEEE802.11b, and 802.11a WLAN standards. The synthesizer includes a ∆Σ noise shaper, a dead-zone-free phase frequency detector and a fully differential charge pump....

(ABSTRACT) The explosive growth in wireless communications has led to an increased demand for wireless products that are cheaper, smaller, and lower power. Recently there has been an increased interest in using CMOS, a traditional digital and low frequency analog IC technology, to implement RF components such as mixers, voltage controlled oscillators (VCOs), and low noise amplifiers (LNAs). Fut...

High Tc superconductor (HTS) technology has been used to develop an advanced high Q resonant circuit and its devices. With a HTS, a very high Q circuit can be achieved; consequently special aspects such as high voltage generation and high current control can be theoretically and practically realized. Theoretical study has been carried out, as well as a practical approach has been made for the c...

Quadrature voltage-controlled oscillators (VCOs) with current-weight-average and voltage-weight-average phase-adjusting architectures are studied. The phase adjusting equalizes the oscillation frequency to LC-resonant frequency. merits of equalization explained by using Leeson's noise equation impulse sensitivity function (ISF). VCOs fabricated 180-nm TSMC CMOS show low-phase-noise performances...