Numerical and experimental analysis of nonradiative dielectric guide modulator and mixer at Ka band

• Published in: IEEE microwave and wireless components letters Vol. 14; no. 7; pp. 322 - 324
• Main Authors: Pathak, N.P., Basu, A., Koul, S.K., Bhat, B.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-07-2004; Institute of Electrical and Electronics Engineers
• Subjects: Analytical models; Applied sciences; Circuit properties; Circuit simulation; Computer simulation; Dielectrics; Diodes; Electric, optical and optoelectronic circuits; Electronics; Exact sciences and technology; Finite element method; Finite element methods; Harmonic analysis; Linear circuits; Mathematical models; Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits; Microwaves; Mixers; Modulators; Numerical analysis; Switches; Switching circuits; Microwave mixer; Shunt; Circuit simulation; Finite element method (FEM); Harmonic analysis; hybrid system analysis techniques; Numerical method; Linear circuit; Harmonic balance; Microwave modulator; Hybrid system; Finite element method; on-off modulator; Ka band; mixer; Switching diode; Schottky barrier diode; nonradiative dielectric (NRD) guide; System analysis
• ISSN: 1531-1309; 1558-1764
• DOI: 10.1109/LMWC.2004.829263

This letter describes the numerical analysis of an on/off modulator and a single-ended mixer in nonradiative dielectric (NRD) guide configuration at Ka band. Currently, only experimental results are available for such structures. A shunt mounted diode switch in NRD guide configuration is analyzed using the finite element method (FEM) in conjunction with linear circuit simulation. A novel mixer is similarly analyzed using FEM and harmonic balance analysis. The results obtained from numerical analysis are compared with measured results. It is demonstrated that some counter-intuitive experimental results can be explained through numerical analysis.