Title :
Four-arm 2nd-mode conical spiral antenna feeding with split tapered coax balun
Author :
Xu Zhao ; Ming Li ; Ning Chen ; QingYu Hou
Author_Institution :
Nanjing Electron. Equip. Inst., Nanjing, China
Abstract :
A novel coaxial line is presented to feed the second mode four-arm conical spiral antenna. Against the conventional 3dB bridge beamformer, the proposed scheme simplifies the design and fabrication, and makes it more flexible in the optimization of the parameters such as the feeding amplititude and phase. The simulated and experimented results are provided which show a bandwidth of 2.25:1 in terms of voltage standing wave ratio better than 2 and radiation pattern beamwidth.
Keywords :
antenna feeds; antenna radiation patterns; array signal processing; baluns; coaxial cables; conical antennas; optimisation; spiral antennas; coaxial line; feeding amplititude; feeding phase; four arm second mode conical spiral antenna feeding; radiation pattern beamwidth; split tapered coax balun; voltage standing wave ratio; Antenna feeds; Antenna measurements; Impedance; Impedance matching; Spirals;
Conference_Titel :
Microwave Conference (EuMC), 2013 European
Conference_Location :
Nuremberg
