Title :
Design of waveguide fed broadband circular polarization truncated horn antenna for high power applications
Author :
Gan, Theng Huat ; Tan, Eng Leong
Author_Institution :
Sch. of EEE, Nanyang Technol. Univ., Singapore, Singapore
Abstract :
This paper presents the design of a waveguide fed broadband circular polarization truncated horn antenna for high power applications. It consists of a circular polarization truncated horn antenna and a truncated-square to rectangular waveguide transition. The structure does not have any internal sharp corners and has large inner dimensions in order not to pose much limit on the maximum power-handling capacity. By truncating the corners of a horn, circular polarization modes are generated. The length of the waveguide transition is critical as it affects the axial ratio and return loss of the horn antenna. The antenna has a simulated 3dB axial ratio bandwidth of 23.6% with return loss better than 20dB.
Keywords :
antenna feeds; broadband antennas; electromagnetic wave polarisation; horn antennas; rectangular waveguides; waveguide antennas; high power application; horn circular polarization mode; maximum power-handling capacity; rectangular waveguide transition; return loss; truncated-square waveguide transition; waveguide fed broadband circular polarization truncated horn antenna design; Bandwidth; Broadband antennas; Horn antennas; Microwave antennas; Microwave theory and techniques; Rectangular waveguides; Waveguide transitions; Axial ratio; broadband horn antenna; circular polarization; high power; truncate; waveguide transition;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2011 Asia-Pacific
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4577-2034-5