Title :
Low-noise active recursive MMIC filters
Author :
Danestig, M. ; Johansson, H. ; Ouacha, A. ; Rudner, S.
Author_Institution :
FOA, Linkoping, Sweden
Abstract :
This paper presents a novel design technique that allows the noise figure of active recursive microwave filters to be reduced to a level approaching that of low-noise amplifiers (LNA). The measured noise figure of a MESFET-based 10 GHz first order MMIC filter is 4.3 dB, less than 1 dB higher than that of the LNA included in the filter. The filter is compared to a more conventional recursive filter with respect to noise and power behavior. A fifth-order filter with a simulated noise figure of 5 dB is also presented.
Keywords :
MESFET integrated circuits; active filters; field effect MMIC; integrated circuit design; integrated circuit noise; microwave filters; recursive filters; 10 GHz; 4.3 dB; MESFET-based filter; active recursive MMIC filters; fifth-order filter; noise figure; power behavior; Active filters; Delay effects; Feedback loop; MESFETs; MMICs; Microwave filters; Noise figure; Noise measurement; Tunable circuits and devices; Voltage;
Conference_Titel :
Microwave Symposium Digest, 1997., IEEE MTT-S International
Conference_Location :
Denver, CO, USA
Print_ISBN :
0-7803-3814-6
DOI :
10.1109/MWSYM.1997.602888
