Limitations of a LC-ladder and capacitive feedback LNA and scaling to mm-wave frequencies

Author

Weststrate, Marnus ; Sinha, Saurabh ; Neculoiu, Dan

Author_Institution

Dept. of Electr., Electron. & Comput. Eng., Univ. of Pretoria, Pretoria, South Africa

Volume

1

fYear

2009

fDate

12-14 Oct. 2009

Firstpage

315

Lastpage

318

Abstract

Simulation results of a LC-ladder and capacitive feedback low noise amplifier over the 60 GHz unlicensed band is presented. A gain of 14.8 dB was obtained with S11 less than -7.6 dB and a noise figure of 6 dB. These results deviate significantly from theory however and as such possible explanations for these deviations are presented. Other design trade-offs present in very wideband designs at lower frequencies are also quantified and equations for the maximum corner frequency and bandwidth as a function of noise figure are derived.

Keywords

circuit feedback; ladder networks; low noise amplifiers; millimetre wave amplifiers; LC ladder circuit; capacitive feedback LNA; frequency 60 GHz; gain 14.8 dB; low noise amplifier; millimeter wave frequency; noise figure 6 dB; unlicensed band; Bandwidth; Broadband amplifiers; Consumer electronics; Equations; Feedback; Frequency; Low-noise amplifiers; Noise figure; Noise measurement; Wideband; LC-ladder filter; capacitive feedback; frequency limitations; low noise amplifier; mm-wave; performance trade-offs;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Conference, 2009. CAS 2009. International

Conference_Location

Sinaia

ISSN

1545-827X

Print_ISBN

978-1-4244-4413-7

Type

conf

DOI

10.1109/SMICND.2009.5336534

Filename

5336534