Low-power UWB LNA with common-gate and current-reuse techniques
- Authors
- Lee, Jiyoung; Park, Hyun-Kyu; Chang, Hojun; Yun, Taeyeoul
- Issue Date
- May-2012
- Publisher
- INST ENGINEERING TECHNOLOGY-IET
- Citation
- IET MICROWAVES ANTENNAS & PROPAGATION, v.6, no.7, pp.793 - 799
- Indexed
- SCIE
SCOPUS
- Journal Title
- IET MICROWAVES ANTENNAS & PROPAGATION
- Volume
- 6
- Number
- 7
- Start Page
- 793
- End Page
- 799
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/165732
- DOI
- 10.1049/iet-map.2011.0415
- ISSN
- 1751-8725
- Abstract
- A common-gate (CG) low-noise amplifier (LNA) that uses the current-reuse technique and is intended to achieve both ultra-wideband and low-power consumption is proposed. The CG amplifier enables wide-band input matching with low transconductance and low frequency-independent noise figure (NF) when employed at the input stage compared with the common-source amplifier. The current-reuse technique is adopted in order to reduce the power dissipation while achieving reasonable power gain. In addition, a shunt and series peaking technique is adopted to obtain wide bandwidth. The proposed LNA achieves a 3-dB bandwidth from 2.4 to 11.2 GHz, a maximum power gain of 14.8 dB, a minimum NF of 3.9 dB and a third-order input intercept point of -11.5 dBm while consuming 3.4 mW from a 1.5 V supply. A 0.18-mu m CMOS process is utilised to fabricate the LNA.
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