A 11GHz differential LNA integrated with on-chip antenna for wireless receivers

Author

He, Xiaowei ; Zhang, Minxuan ; Li, Jinwen ; Li, Shaoqing

Author_Institution

Sch. of Comput., Nat. Univ. of Defense Technol., Changsha, China

fYear

2010

Firstpage

761

Lastpage

763

Abstract

A fully differential common-source cascode low noise amplifier(LNA) is presented for wireless receivers. The capacitive cross-coupling technique combined with cascode transistor is introduced to enhance LNA gain and reduce noise figure as well as the nonlinearity influence of cascaded transistors. A 2.6 mm long on-chip folded dipole antenna is integrated with this LNA and co-design is performed for impedance conjugate matching and power transmission. The experimental results by ADS indicate that this LNA, implemented in a 0.18 μm CMOS process, has achieved 4.1 dB noise figure and 12 dB power gain at 11 GHz. The whole system consumes 24 mW under 1.8 V supply with 1.9 mm² effective chip area.

Keywords

CMOS image sensors; differential amplifiers; dipole antennas; low noise amplifiers; radio receivers; CMOS process; capacitive cross-coupling technique; cascode transistor; differential LNA; frequency 11 GHz; fully differential common-source cascode low noise amplifier; gain 12 dB; impedance conjugate matching; noise figure 4.1 dB; on-chip folded dipole antenna; power 24 mW; power transmission; size 0.18 mum; wireless receivers; Dipole antennas; Impedance; Linearity; Noise; System-on-a-chip; Transistors; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2010 10th IEEE International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-5797-7

Type

conf

DOI

10.1109/ICSICT.2010.5667409

Filename

5667409