Title :
Matching networks synthesis using small reflection theory
Author_Institution :
Dept. of Electron. Eng., Lunghwa Univ. of Sci. & Technol., Taoyuan, Taiwan
Abstract :
A synthesizing method is proposed to design and implement low noise amplifiers (LNA) in the microwave frequency range. The LNA is implemented by using Chebyshev matching transformers (CMT). In particular, the effective bandwidth and noise figure of CMT LNA is larger than balance LNA 2.2 GHz and 2.7 GHz, respectively. The size of CMT LNA reduces up 23.8% of balance LNA. Two types of LNA are built and tested. A CMT LNA is presented and implemented to validate this method correct by measuring.
Keywords :
UHF amplifiers; low noise amplifiers; network synthesis; transformers; Chebyshev matching transformers; UHF amplifiers; frequency 2.2 GHz; frequency 2.7 GHz; low noise amplifiers; networks synthesis; small reflection theory; Acoustic reflection; Bandwidth; Chebyshev approximation; Low-noise amplifiers; Microwave amplifiers; Microwave frequencies; Network synthesis; Noise figure; Testing; Transformers; Chebyshev matching transformers; Low Noise Amplifier;
Conference_Titel :
Wireless Communications & Signal Processing, 2009. WCSP 2009. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-4856-2
Electronic_ISBN :
978-1-4244-5668-0
DOI :
10.1109/WCSP.2009.5371454
