Analysis to two-tone, third-order distortion in cascaded two-ports

Author

Kanaglekar, Niranjan G. ; Mcintosh, Robert E. ; Bryant, William E.

Author_Institution

Dept. of Electr. & Comput. Eng., Massachusetts Univ., Amherst, MA, USA

Volume

36

Issue

4

fYear

1988

fDate

4/1/1988 12:00:00 AM

Firstpage

701

Lastpage

705

Abstract

The third-order intermodulation distortion (IMD) of a system composed of a number of cascaded two-port networks is considered. The two-tone, third-order intercept point (IP) is highly dependent on the phase angles of the IMD signals, which are usually unknown to the system designer. Consequently, worst-case design strategies are normally used in these situations. General bound formulas are developed for the IP that include the effects of mismatches between component networks. Expressions for the expected value and variance of the IP of two cascaded two-port networks are also obtained. A comparison of these results with measurements indicates that worst-case design strategies are overly conservative in many situations

Keywords

cascade networks; intermodulation; multiport networks; nonlinear network analysis; IMD; cascaded two-port networks; general bound formulas; mismatches; nonlinear multiport networks; phase angles; third-order intermodulation distortion; two tone distortion; worst-case design strategies; Filtering; Frequency; Intelligent networks; Intermodulation distortion; Nonlinear distortion; Phase measurement; Power generation; Production systems; Signal design; Statistical distributions;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.3574

Filename

3574