Compact and low power consumption K-band differential low-noise amplifier design using transformer feedback technique

Author

Chiou, H.-K. ; Liao, Hung-Yu ; Liang, K.-C.

Author_Institution

Dept. of Electr. Eng., Nat. Central Univ., Jhongli

Volume

2

Issue

8

fYear

2008

fDate

12/1/2008 12:00:00 AM

Firstpage

871

Lastpage

879

Abstract

A compact and low power consumption three-stage differential K-band low-noise amplifier (LNA) with a 10 dB differential mode gain at 25.8 GHz and a 3 dB bandwidth of 22.8-26.8 GHz by using a transformer feedback technique with standard 0.18 mum CMOS technology is presented. The minimum input and output return losses over a 3 dB bandwidth are 11 and 7 dB, respectively. Fully differential characterisations of the noise figure (NF) and the common mode rejection ratio (CMRR) are demonstrated. The obtained NF and CMRR are 4.84 dB and 23.3 dB at 25.8 GHz. The input 1 dB compression point and input third-order intercept point are 17.8 and 5 dBm, respectively. The overall power consumption is 25.6 mW. This three-stage differential LNA only occupies an area of 0.63 x 0.88 mm².

Keywords

CMOS analogue integrated circuits; differential amplifiers; feedback amplifiers; low noise amplifiers; low-power electronics; microwave amplifiers; transformers; CMOS technology; bandwidth 22.8 GHz to 26.8 GHz; frequency 25.8 GHz; gain 10 dB; loss 11 dB; loss 7 dB; low power consumption LNA; noise figure 4.84 dB; power 25.6 mW; size 0.18 mum; three-stage K-band differential low-noise amplifier; transformer feedback technique;

fLanguage

English

Journal_Title

Microwaves, Antennas & Propagation, IET

Publisher

iet

ISSN

1751-8725

Type

jour

DOI

10.1049/iet-map:20070331

Filename

4686789