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A 9 - 10.6 GHz Microstrip Antenna—UWB Low Noise Amplifier with Differential Noise canceling Technique for IoT Applications

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International Journal of Communications, Network and System Sciences 2019年第11期12卷 189-197页

作者： Dalia Elsheakh Heba Shawkey Sherif Saleh Electronics Research Institute El Bohous St. Giza Egypt Hawaii Center for Advanced Communication Honolulu HI USA

An ultra-wide band (UWB) receiver front-end that operates at the UWB frequency range, starting from 9 GHz - 10.6 GHz is proposed in this paper. The proposed system consists of an off-chip microstrip antenna and CMOS differential low noise amplifier with a differential noise canceling (DNC) technique. The proposed antenna is trapezoidal dipole shaped with balun and printed on a low-cost FR4 substrate with dimensions 10 × 10 × 0.8 mm3. The balun circuit integrated with the ground antenna to improve the antenna impedance matching. Noise canceling is obtained by using a differential block with each stage having 2 amplifiers that generate differential signals, subtracted to improve total noise performance. The proposed DNC block improves NF by 50% while increasing total power consumption with only 0.1 Mw. The differential CMOS cascode LNA with DNC block is implemented using UMC 0.13 μm CMOS process, exhibits a flat gain of 19 dB, maximum noise figure of 2.75 dB, 1 dB compression point −16 dBm and 3rd order intercept point (IIP3) −10 dBm. The proposed system has total DC power consumption of 2.8 mW at 1.2 V power supply.

关键词： Ultra-Wideband (UWB) Low Noise Amplifier (LNA) Differential Noise canceling Low Power Low Noise Figure

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A single-ended wideband reconfigurable receiver front-end for multi-mode multi-standard applications in 0.18μm CMOS

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High Technology Letters 2019年第1期25卷 1-7页

作者：陶健 Fan Xiangning Bao Kuan Institute of RF&OE-ICs School of Information Science and EngineeringSoutheast University

This paper presents a reconfigurable RF front-end for multi-mode multi-standard(MMMS) applications. The designed RF front-end is fabricated in 0.18 μm RF CMOS technology. The low noise characteristic is achieved by the noise canceling technique while the bandwidth is enhanced by gate inductive peaking technique. Measurement results show that, while the input frequency ranges from 100 MHz to 2.9 GHz, the proposed reconfigurable RF front-end achieves a controllable voltage conversion gain(VCG) from 18 dB to 39 dB. The measured maximum input third intercept point(IIP3) is-4.9 dBm and the minimum noise figure(NF) is 4.6 dB. The consumed current ranges from 16 mA to 26.5 mA from a 1.8 V supply voltage. The chip occupies an area of 1.17 mm^2 including pads.

关键词： reconfigurable multi-mode multi-standard (MMMS) receiver front-end gate inductive peaking noise canceling CMOS

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Active Power Filter Based on Adaptive Detecting Approach of Harmonic Currents

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Journal of Electromagnetic Analysis and Applications 2009年第4期1卷 240-244页

作者： Yu ZHANG Yupeng TANG 不详

The ip-iq detection method based on instantaneous inactive power theory has been applied widely in active power filter because of its good real-time. But it needs large computation, and three-phase currents are processed as integrity, thus calculation accuracy can't be ensured. Based on adaptive interference canceling theory, this paper presents a new ad- aptive detection method for harmonic current, it is a continuously regulated closed-loop system, and its operating characteristics are almost independent of the parameter variations of the elements, thus it performs better than that based on traditional theory. At last this paper provides the simulation of active power filter including the detecting cir-cuit which proved the design is feasible and correct.

关键词： Adaptive Interference canceling Adaptive Harmonic Detecting Active Power Filter

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