Title :
Planar 9-element quasi-Yagi antenna array for X-band application
Author_Institution :
Res. Inst. for High Frequency Phys. & Radar Tech., FGAN Res. Establ. for Appl. Sci., Wachtberg
Abstract :
In this paper, a new planar antenna array based on 9 identical quasi-Yagi elements is presented. In contrast to conventional designs, the feeding network is composed of 3-way power dividers, which are carefully designed in order to provide synchronised output signals over a wide frequency range. The use of spline-shaped microstrip lines suppresses coupling effects by parallel lines. Thus, signal distortions within the feeding network are minimised. Compared to conventional designs with 8 elements, the additional antenna element would enhance the gain of the array, which is between 10.5 and 13 dB in the X-Band. The input return loss of the antenna array is below -15 dB over most parts of the relevant spectrum, with a total bandwidth of 45%. The planar antenna array is well-suited as a radiating element in linear phased arrays for multifunction radars including SAR and MTI
Keywords :
Yagi antenna arrays; antenna accessories; antenna phased arrays; distortion; linear antenna arrays; microstrip antenna arrays; microstrip lines; planar antenna arrays; radar antennas; synthetic aperture radar; 10.5 to 13 dB; 8 to 12 GHz; MTI; SAR; X-band application; antenna element; linear phased arrays; multifunction radars; planar 9-element antenna array; quasi-Yagi antenna array; signal distortions; spline-shaped microstrip lines; Antenna arrays; Frequency conversion; Frequency synchronization; Linear antenna arrays; Microstrip antenna arrays; Phased arrays; Planar arrays; Power dividers; Signal design; Spline;
Conference_Titel :
Wireless Technology, 2005. The European Conference on
Conference_Location :
Paris
Print_ISBN :
2-9600551-1-X
DOI :
10.1109/ECWT.2005.1617776