Title :
The harmonic suppression of LNA
Author :
Liu, Shen ; Su, Donglin ; Guo, Huadong
Author_Institution :
Sch. of Electron. Inf. Eng., Beihang Univ., Beijing
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;
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
DOI :
10.1109/ISAPE.2008.4735427
