A CMOS 3.1 - 10.6 GHz UWB LNA Employing Modified Derivative Superposition Method

Amir Homaee

Staff in Iranian Offshore Oil Company (IOOC), Tehran, Iran.

DOI: 10.4236/cs.2013.43044                

Abstract

Low noise amplifier (LNA) performs as the initial amplification block in the receive path in a radio frequency (RF) receiver. In this work an ultra-wideband 3.1 10.6-GHz LNA is discussed. By using the proposed circuits for RF CMOS LNA and design methodology, the noise from the device is decreased across the ultra wide band (UWB) band. The measured noise figure is 2.66 3 dB over 3.1 10.6-GHz, while the power gain is 14 ± 0.8 dB. It consumes 23.7 mW from a 1.8 V supply. The input and output return losses (S11 & S22) are less than –11 dB over the UWB band. By using the modified derivative superposition method, the third-order intercept point IIP3 is improved noticeably. The complete circuit is based on the 0.18 μm standard RFCMOS technology and simulated with Hspice simulator.

Keywords

Broadband; Low-Noise Amplifier (LNA); Noise Figure; Ultra-Wideband (UWB); Modified Derivative Su-perposition Method

Conflicts of Interest

The authors declare no conflicts of interest.

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