This paper provides a quantitative comparison and explores the design space of lead zirconium titanate PZT –only and PZT-on-silicon length-extensional mode resonators for incorporation into radio frequency microelectromechanical system filters and oscillators. We experimentally measured the correlation of motional impedance RX and quality factor Q with the resonators’ silicon layer thickness tS...

Just when it seemed like the market for short-range RF technologies had become synonymous with Bluetooth, Wi-Fi and other products reaching commodity status, there will soon be another signal to contend with: ZigBee. This pervasive wireless networking environment adds to the challenge that engineers designing these systems have to provide a receiver that delivers valid, uncorrupted data packets...

This paper describes a CMOS analog baseband circuits for directconversion receiver of5GHz IEEE 802.11a. The analog baseband consists of I/Q signal paths which have channel selection filter, programmable gain amplifier (PGA). An active-RC channel selection filter for WLAN is described whose cut-off frequency is tunable from 6MHz to 20MHz. For high linearity, the PGA is constructed with op-amp an...

In this paper, a low-power up-conversion current-mode mixer, designed in the chartered 0.18-μm RFCMOS technology, is proposed to realize the transmitter front-end in the frequency band of 2.4 GHz. The proposed mixer can convert a 10 MHz intermediate frequency (IF) signal to a 2.4 GHz RF signal, with a local oscillator power of 2 dBm at 2.39 GHz. A comparison with conventional voltage-mode up-co...

144606-7171-IJET-IJENS © December 2014 IJENS I J E N S Abstract— This paper shows the design of a broadband low noise amplifier (LNA) for ultra-wideband (UWB) applications. The proposed LNA uses cascode configuration technique followed by an inductive inter-stage network to realize the flat gain throughout the UWB band. The inductive inter-stage network is cascaded to a common source amplifier ...

This paper presents an ultra-wideband (UWB) low noise amplifier (LNA) consuming 2.2-mW core dc power for 6-8.5GHz wireless applications. A common-gate input stage is cascaded with a common-source second stage to perform input impedance matching and wideband stagger-tuning amplification, while the current-reuse topology minimizes the dc power dissipation. The design method used to achieve flat-g...

This paper describes a 2.4-GHz fully-integrated front-end receiver including single-pole triple-throw (SP3T) switch and low-noise amplifier (LNA) with bypass function, which was fabricated in 0.25 μm GaAs pHEMT process. An asymmetrical SP3T architecture is incorporated to enable the operate four modes. The exploration of impedance voltage gain behavior proposed LNA help establish matching netwo...

Passive mixers have insertion loss that requires compensation in either the RF or IF gain stages to establish the overall desired receiver noise figure performance. For these passive mixers, the user must not only consider the third-order input intercept points (IIP3), but should also consider the output third-order intercept point (OIP3) when comparing the performance to integrated mixers. Pas...

Design of Global Positioning System (GPS) receiver with a low noise amplifier (LNA) in the front end remains a major design requirement for the success of modern day navigation and communication system. Any LNA is expected to meet the requirements like its ability to add the least amount of noise while providing sufficient gain, perfect input and output matching, and high linearity. However, mo...

A square-law harmonic-rejection mixer (SL-HRM) driven by a sine local oscillator (LO) is proposed for wideband and tunable rejection of all LO harmonics. The key performances including the gain, noise figure (NF), input-referred third-order intercept point (IIP3), and harmonic rejection ratio (HRR) with respect to the amplitude and purity of the sine-LO are analyzed. In the circuit level, the S...