The harmonic suppression of LNA

Author

Liu, Shen ; Su, Donglin ; Guo, Huadong

Author_Institution

Sch. of Electron. Inf. Eng., Beihang Univ., Beijing

fYear

2008

fDate

2-5 Nov. 2008

Firstpage

1142

Lastpage

1145

Abstract

In this paper, we designed an amplifier based on the transistor ATF 34143 from Agilent. Networks of input and output with appropriate I/O matching were designed through the ADS design software in order to match the impedance of input and output to 50 Ohm. In addition, special optimizations on noise figure and transmission gain were conducted. To suppress the harmonic, various circuits including LC band-pass filter, LC band-reject filter, parallel coupled microstrip transmission line band-pass filter, DGS (defected ground structure) and negative feedback were designed and verified through ADS simulating. As a result, we concluded a relatively effective method for harmonic suppression.

Keywords

electronic design automation; harmonics suppression; impedance matching; low noise amplifiers; transistors; ADS design software; I/O matching; LNA; harmonic suppression; impedance matching; noise figure; transistor ATF 34143; transmission gain; Band pass filters; Coupling circuits; Distributed parameter circuits; Feedback circuits; Harmonics suppression; Impedance; Microstrip filters; Noise figure; Power harmonic filters; Software design; ADS; Filter; Harmonic Suppression; LNA;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas, Propagation and EM Theory, 2008. ISAPE 2008. 8th International Symposium on

Conference_Location

Kunming

Print_ISBN

978-1-4244-2192-3

Electronic_ISBN

978-1-4244-2193-0

Type

conf

DOI

10.1109/ISAPE.2008.4735427

Filename

4735427