A 9 - 10.6 GHz Microstrip Antenna—UWB Low Noise Amplifier with Differential Noise Canceling Technique for IoT Applications
- 1 Hawaii Center for Advanced Communication, Honolulu, HI, USA
- 2 Electronics Research Institute, El Bohous St., Giza, Egypt
- 3 Electronics Research Institute, El Bohous St., Giza, Egypt
Abstract
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 mm 3 . 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.
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