A miniature 4.3-7-GHz, 1-V CMOS LNA with helical inductors

A fully-integrated 4.3-7 GHz CMOS low-voltage widehand low-noise amplifier with helical inductors has been demonstrated in this paper. The CMOS LNA, operating at a supply voltage as low as 1 V, achieves a small signal gain of 14 dB and 3-dB bandwidth from 4.3 to 7 GHz. The minimum noise figure is 2.9 dB at 6 GHz. With the benefits of helical inductors, the total effective chip sue is only 0.2 mm_2.