Cascaded active and passive quasi-optical grids

A general method for analyzing systems of cascaded grids is presented. The analysis is based on a full-wave theory for arbitrary periodic metal gratings printed on dielectrics and loaded with active and/or passive lumped devices. Each quasioptical component is characterized as a multiport network, i...

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Bibliographic Details
Published inIEEE transactions on microwave theory and techniques Vol. 43; no. 12; pp. 2904 - 2909
Main Authors Shiroma, W.A., Bundy, S.C., Hollung, S., Bauernfeind, B.D., Popovic, Z.B.
Format Journal Article
LanguageEnglish
Published IEEE 01.12.1995
Subjects
Capacitors
Dielectric devices
Filtering theory
Filters
Frequency conversion
Gratings
Polarization
Resistors
Transmission lines
Voltage-controlled oscillators
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Summary:A general method for analyzing systems of cascaded grids is presented. The analysis is based on a full-wave theory for arbitrary periodic metal gratings printed on dielectrics and loaded with active and/or passive lumped devices. Each quasioptical component is characterized as a multiport network, in which two of the ports represent the free-space regions on the two sides of the grid surface, and the remaining ports are connected to the devices. This approach allows cascading of quasi-optical components using transmission-line theory. Several examples are presented which demonstrate the theory: free-space filters containing lumped capacitors and resistors; an X-band transmission-mode linear-to-circular polarization converter; an S-band voltage-controlled frequency-selective surface; and a C-band mode-selective grid oscillator.
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ISSN:0018-9480
1557-9670
DOI:10.1109/22.475654