Inductorless Ultra-Wide Band Front-End Chip Design with Noise Cancellation Technology for Wireless Communication Applications 10 |
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Authors: | Jhin-fang HUANG Ming-chun HSU Ron-yi LIU |
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Affiliation: | 1. Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 10672, Taiwan, China 2. ChungHwa Telecommunication Labs., Taoyuan 32601, Taiwan, China |
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Abstract: | An inductorless Ultra-Wide Band (UWB) receiver front-end chip design used in wireless communications for the frequency band of 3.1~4.8 GHz is presented. This homodyne receiver mainly consists of a differential Low Noise Amplifier (LNA) circuit followed by a down-converting mixer. The proposed LNA circuit with a noise canceling resistor is connected to the CMOS device's body to reduce the substrate thermal noise. Simulation and measurement results show that the chip can reduce the front-end Noise Figure (NF) about 0.5dB and achieve the Conversion Gain (CG) of 19.44~21.57 dB and double-sideband NF less than 7.8 dB. Also, the input third-order intercept point (IIP3) is -11 dBm, and the input second-order intercept point (IIP2) is 49 dBm. Fabricated in TSMC 0.18 μm CMOS technology, this chip occupies only 0.167 mm2 and dissipates power 59.2 mW. |
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Keywords: | ultra-wideband UWB noise cancellation |
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