Noise model for frequency translators and transposed-gain amplifiers

Author

Garcia-Nava, J.F. ; Ferre-Pikal, E.S. ; Walls, F.L.

Author_Institution

Centro Nacional de Metrol., Mexico

fYear

1997

fDate

28-30 May 1997

Firstpage

433

Lastpage

437

Abstract

This paper reports phase modulation (PM) noise measurements of mixers used as frequency translators and of mixers used in homodyne systems. The relationship of the PM noise of a mixer used in a frequency translator (heterodyne system) to that in a homodyne system is not well known. The purpose of this paper is to investigate this relationship (if any). We found that the PM noise of mixers used in heterodyne systems consists of a 1/f portion decreasing to a thermal noise floor characterized by the temperature and conversion loss. The 1/f PM noise is typically 4-7 dB lower than in a heterodyne system for the same mixer used

Keywords

1/f noise; circuit noise; demodulation; electric noise measurement; measurement errors; mixers (circuits); phase modulation; radiofrequency amplifiers; 1/f portion; PM noise; conversion loss; frequency translators; heterodyne system; homodyne systems; mixers; phase modulation noise measurements; temperature loss; thermal noise floor; transposed-gain amplifiers; Electrical resistance measurement; Frequency; Low-noise amplifiers; Mixers; Noise cancellation; Noise figure; Noise measurement; Phase modulation; Phase noise; Power measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium, 1997., Proceedings of the 1997 IEEE International

Conference_Location

Orlando, FL

Print_ISBN

0-7803-3728-X

Type

conf

DOI

10.1109/FREQ.1997.638640

Filename

638640