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Ultra wide band impulse-radio (UWB-IR) brings the opportunity of increased bitrates in RFID systems. This paper presents the implementation of a CMOS non-coherent UWB impulse receiver targeted for readers in RFID applications. The receiver consists of an RF-front-end and an on-off keying (OOK) 10 Mbps demodulator, which is implemented using a 0.18mum CMOS process. The receiver works for 3.1GHz-5GHz,...
In this paper, two different low noise amplifiers (LNA) for impulse-radio (IR) ultra-wideband (UWB) receivers are presented. They have been designed in a 0.18 mum CMOS process, with a central frequency of 8 GHz and about 1 GHz bandwidth. The applications considered are portable applications for very short communication distances (body area networks, BAN) with bit rates up to 200 Mbps. Therefore, a...
This paper presents an ultra-wideband (UWB) 3.1~8.2-GHz low-noise amplifier design. Resistive shunt-feedback method is used to provide wideband input matching and low noise figure (NF). The cascade configuration is employed with the inductive source degeneration and an input three-section band-pass Chebyshev filter. The LNA operates at 1.5 Volt and consumes 16.2 mW. At 3.1~8.2-GHz, this LNA has NF...
A 0.18mum CMOS direct-conversion dual-band DVB-H receiver occupies 9.7mm2 and achieves a 4dB/5dB NF at UHF/L-band, eliminating the need for an external LNA. By using a fractional-N synthesizer, the 470 to 890MHz and 1.4 to 1.8GHz bands are supported while achieving an integrated phase noise of <-41dBc. 6th-order LPF support channel bandwidths from 4 to 10 MHz. The overall power consumption is 295mW/280mW...
This paper presents a wide operation range 0.18mum CMOS frequency divider for 60GHz wireless applications. The direct injection lock technique is used to perform the signal division at millimeter-wave frequency. The deep n-well is implemented under the NMOS switch transistor to improve the lock range of the frequency divider. Combined with band switching and analog frequency tuning, the operation...
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