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The spectrum allocated for the operation of cellular services is country dependent and fragmented in several frequency bands. Mobile phones, to be usable globally, are therefore required to support many bands. The lack of suitable tuneable pre-selection filters and duplexers mandates the use of a large number of low-noise amplifiers (LNAs) in the receiver section of the transceiver. Minimization of...
The paper investigates the feasibility of the latest CMOS technology for the design and analysis of the emerging 60-GHz wireless applications. Recent developments in millimeter-wave CMOS systems have begun to address the integration of building blocks to form transceivers. With the availability of 7 GHz of unlicensed spectrum around 60 GHz, there is growing interest for new consumer applications requiring...
This paper presents the design of a fully integrated receiver front-end for a 2.4 GHz RF transceiver. The proposed receiver front end (low-noise amplifier and mixer) is based on a direct conversion architecture designed in 0.18 mum CMOS technology. The chip provides a down conversion gain to the 50 MHz IF of 13.2 dB, SSB noise figure (NF) of 7.65 dB and a 3rd-order input intercept point (IIP3) of...
This paper presents the integrated circuit design of an ultra-wideband (UWB) transceiver for a wireless endoscope that enables real-time diagnosis with high resolution images. The implemented UWB transceiver is a non-coherent transmit reference (TR) architecture with differential binary phase shift keying (DBPSK) modulation. All-digital pulse generator (PG) and merged radio frequency (RF) front end...
A 0.18-mum CMOS tri-band MIMO transceiver for fixed and mobile WiMAX applications is presented. The transceiver supports operation in the 2.3-2.7 GHz, 3.3-3.8 GHz, or 4.9-5.95 GHz bands. A novel DC-offset removal scheme is used to enable a low-cost direct-conversion architecture. The transmitter exhibits an EVM of -38 dB, -36 dB, and -33 dB @ 0 dBm output power for the 2G, 3G, and 5G bands respectively...
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