Title :
Analysis and measurement of NRD-guide leaky wave coupler in Ka-band
Author :
Niu, Dow-Chih ; Yoneyama, Tsukasa ; Itoh, Tatsuo
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
12/1/1993 12:00:00 AM
Abstract :
A new structure for a nonradiative dielectric (NRD) waveguide directional coupler has been developed. The structure combines two NRD guides and a dielectric slab guide in order to utilize a leakage mechanism for coupling. The coupling depends on this leaky mechanism, but not on field interactions as in a conventional proximity coupler. A theoretical formula for calculation of the decay constant is derived. The field along the NRD guide and the decay constant are measured at Ka band (35 GHz) and compared with the theoretical data. Reasonable agreement between the measured and theoretical data is found
Keywords :
dielectric waveguides; directional couplers; dispersion (wave); 35 GHz; Ka-band; NRD-guide leaky wave coupler; coupled mode theory; decay constant; dielectric slab guide; dispersion curve; leakage mechanism; nonradiative dielectric waveguide directional coupler; Coupling circuits; Dielectric measurements; Directional couplers; Frequency; Millimeter wave measurements; Millimeter wave technology; Power generation economics; Slabs; Waveguide components; Waveguide discontinuities;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
