Title :
Comparison of noise properties of various microwave active filters
Author :
Zaitsev, A. ; Kapilevich, B.
Author_Institution :
Siberia State Univ. of Telecommun. & Informatics, Novosibirsk, Russia
Abstract :
In this paper, five topologies of microwave active filters (MAFs) are studied. We have considered MAFs proposed earlier in the class of filters with compensation for loss. First we have investigated theoretically the noise properties of various approaches to compensate for losses in microwave resonators. Then five third order microstrip active filters were simulated to validate a choice of the best configuration. It was shown that the use of negative resistance with minimized noise measure gives a reduced noise figure under the same conditions
Keywords :
active filters; compensation; hybrid integrated circuits; integrated circuit noise; losses; microstrip filters; microstrip resonators; microwave filters; microwave integrated circuits; negative resistance; MIC; RT Duroid substrate; loss compensation; microwave active filters; microwave resonator loss; minimized noise measure; negative resistance; noise properties; third order microstrip filters; Active filters; Active noise reduction; Electrical resistance measurement; Microstrip filters; Microwave filters; Noise figure; Noise measurement; Noise reduction; Resonator filters; Topology;
Conference_Titel :
Microwave Electronics: Measurements, Identification, Application Conference, 2001. MEMIA 2001
Conference_Location :
Novosibirsk
Print_ISBN :
0-7803-6743-X
DOI :
10.1109/MEMIA.2001.982328
