Transactions of Nanjing University of Aeronautics & Astronautics
A Current Mode Low-Noise Gm-C Filter with a Cut-Off Frequency of 5 GHz in Telecommunication System
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Abstract:
The high linearity low-noise filter is an indispensable key circuit in the communication system. Based on the structure of current-reuse source-degradation operational transconductance amplifier （OTA）， a 5 GHz current-mode low-noise Gm-C filter suitable for high-speed communication systems is proposed. Thanks to the proposed current mode structure and the OTA’s high-power efficiency and high linearity， the filter obtains good noise and high linearity performance with very low power consumption. The filter is designed in standard 65 nm CMOS technology and occupies a core area of 0.06 mm2. The simulation results show that the operating bandwidth is 5 GHz， the IIP3 is 35 dBm， and the power consumption is only 3.2 mW.
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This work was supported in part by the National Key R&D Program of China （No.2018YFE0205900） and in part by the Natural Science Foundation of Jiangsu Province of China （No.BK20180368）.
Clc Number:
TN925
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