Title :
A low loss frequency scanning planar array using hybrid coupling
Author :
Wang, H. ; Ge, P. ; Fang, D.G. ; Ma, X.F. ; Sheng, W.X.
Author_Institution :
Millimeter Wave Tech. Lab., Nanjing Univ. of Sci. & Technol., Nanjing, China
Abstract :
An X-band frequency scanning microstrip array is proposed in this paper. In the structure, an E-plane bent rectangular waveguide is used as slow-wave structure to achieve the low loss. The array is fed by using a combination of aperture coupling from the slotted waveguide and microstrip line feeding. The simulated results show that the range of the scanning angles is (-48°, 45°), the gain is above 21.6dBi at the working bandwidth and the peak gain is 23.2dBi. In addition to low feed loss and wide angle scanning capability in one dimension under limited bandwidth, this proposed design is with compact structure.
Keywords :
aperture-coupled antennas; microstrip antenna arrays; planar antenna arrays; rectangular waveguides; slow wave structures; X-band frequency scanning microstrip array; Zs-plane bent rectangular waveguide; aperture coupling; frequency scanning planar array; hybrid coupling; microstrip line feeding; slotted waveguide; slow wave structure; wide angle scanning; Antenna arrays; Apertures; Bandwidth; Costs; Feeds; Frequency; Microstrip antenna arrays; Millimeter wave technology; Phased arrays; Planar arrays; Microstrip array; frequency scan; slot coupling; waveguide;
Conference_Titel :
Microwave and Millimeter Wave Technology (ICMMT), 2010 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-5705-2
DOI :
10.1109/ICMMT.2010.5524897
