An integrated capacitively coupled transformer and its application for RF IC´s

Author

Wong, Lai-Pong ; Snyder, Chris ; Manku, Tajinder ; Kovacic, Stephen

Author_Institution

Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada

fYear

2000

fDate

2000

Firstpage

349

Lastpage

352

Abstract

This paper describes a low voltage topology that uses a passive element that is described as a “capacitively coupled transformer” (CCT). This structure can be easily implemented using an IC technology that supports both on chip MIM capacitors and high Q-inductors. The structure is used to design a low noise amplifier at 1.9 GHz. The LNA consumes 4 mA of current has a input IP3 of -4.5 dBm, a noise figure of 2.3 dB for a source resistance of 50 Ω, a minimum noise figure of 1.9 dB, and a gain of 10.1 dB. The topology maintains a high linearity without sacrificing noise figure and gain for a supply voltage of 1 V

Keywords

UHF amplifiers; UHF integrated circuits; high-frequency transformers; integrated circuit design; 1 V; 1.9 GHz; 1.9 dB; 10.1 dB; 2.3 dB; 4 mA; 50 ohm; IC technology; LNA design; RF ICs; RFIC application; high linearity; integrated capacitively coupled transformer; low noise amplifier; low voltage topology; onchip MIM capacitors; onchip high Q-inductors; passive element; Application specific integrated circuits; Circuit topology; Coupling circuits; Inductors; Linearity; Low voltage; MIM capacitors; Noise figure; Radio frequency; Radiofrequency integrated circuits;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference, 2000. CICC. Proceedings of the IEEE 2000

Conference_Location

Orlando, FL

Print_ISBN

0-7803-5809-0

Type

conf

DOI

10.1109/CICC.2000.852682

Filename

852682