Title :
A resonant type leaky-wave antenna using an image NRD guide
Author :
Yamamoto, M. ; Itoh, K.
Author_Institution :
Graduate Sch. of Eng., Hokkaido Univ., Sapporo, Japan
Abstract :
The purpose of this paper is to propose a new leaky-wave antenna constructed from an image non-radiating dielectric (NRD) waveguide. A half sinusoidal source distribution, which is very long in comparison with the free-space wavelength, is realized by using a resonant phenomenon of a leaky mode near its cutoff frequency. Thus the broadside radiation with low side lobe level and high directivity can be obtained. Experimental results measured at Ku band are presented to demonstrate the effective performance of the proposed antenna.
Keywords :
antenna arrays; antenna radiation patterns; leaky wave antennas; nonradiative dielectric waveguides; 14.2 to 14.8 GHz; Ku band; broadside radiation; cutoff frequency; directivity; half sinusoidal source distribution; image NRD guide; image nonradiating dielectric waveguide; leaky mode; resonant phenomenon; resonant type leaky-wave antenna; side lobe level; Antenna measurements; Apertures; Cutoff frequency; Dielectric measurements; Etching; Leaky wave antennas; Microstrip antennas; Planar waveguides; Radar antennas; Resonance;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1999. IEEE
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-5639-x
DOI :
10.1109/APS.1999.789435
