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This paper discusses mm-wave CMOS transceiver IC design focusing on the techniques to increase the transmission data rate. Basic design key points are the increase of bandwidth, the increase of SNR, the decrease of phase noise in quadrature oscillator and frequency interleaving technique. Thus we selected the direct conversion architecture with resistive feedback amplifier to realize the wideband...
This paper presents a radio frequency front end of 5.8GHz dedicated short range communication receiver, utilizing a low-IF heterodyne architecture, which is necessary to solve the image problem and I/Q mismatches. A LC tank that is used as load of LNA can tune the resonant frequency more accurately than specific process allows. A simple but effective voltage bias for the first RF mixer is proposed,...
A modulation depth and output power tunable 5.8-GHz CMOS direct-conversion transmitter based on current-mode operation is proposed in this paper. The proposed transmitter consists of an 8bit DAC, LPF, direct up-conversion mixer, a divided-by-two circuit, and PA. The matching network of PA is outside the chip. A binary, unary, segmented current steering DAC is used with the function to achieve 16 levels...
A novel calibration algorithm called Dynamic Mismatch Compensation is proposed to reduce amplitude, delay and duty-cycle errors of MSB current cells (MSBs) in current-steering DACs. The DMC algorithm, suitable for high resolution and high speed DAC applications, can improve the SFDR by more than 10dBc, according to the behavioral-level DAC simulation results in Matlab. Transistor-level simulation...
A new DC cancellation technique for a mixer-first receiver in UHF RFID reader is presented in this paper. A band-pass filter composed of an inductor and a capacitor is proposed to cancel the large DC component caused by the carrier leakage at the output of the passive mixer where the mixer is the input stage of the receiver to achieve a high 1dB compression point. Simulation results indicate that...
A 2.2mW splitting low noise trans-conductance amplifier (split-LNTA) current-driven passive mixer for the ultra-high frequency (UHF) radio frequency identifycation (RFID) active tag is presented in this paper. The split-LNTA can alleviate the issues in the conventional current-driven passive mixer utilizing 50% duty cycle local oscillator (LO). So 50% duty cycle LO can be used instead of 25% duty...
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