A 10–18 GHz Current-Reused LNA MMIC With Feedback and Gain-Compensation Techniques

This letter presents a broadband current-reused low-noise amplifier (LNA) monolithic microwave integrated circuit (MMIC) for wireless communication. Feedback and gain-compensation techniques are applied in the design of the proposed LNA MMIC to obtain the performance of high gain and low in-band gain ripple with ultralow noise figure (NF) in wide operational bandwidth. For verification, the proposed LNA is fabricated in 0.15-
$\mu \text{m}$
gallium arsenide (GaAs) technology with a size of 1.21 mm2, realizing the measured gain of over 27 dB, NF of less than 1.1 dB, output 1-dB compression point (OP
$_{1\,\mathrm {dB}}$
) of greater than 9.2 dBm at 18 GHz and in-band gain ripple of about ±0.17 dB from 10 to 18 GHz. The total power dissipation of the proposed LNA MMIC is less than 125 mW.