A novel 94 GHz planar integrated monopulse array antenna with hybrid feeding networks

作者：Wang Wei^*; Zou Le; Wang Xuetian

来源：IEICE Electronics Express, 2018, 15(12): 20180381.

DOI：10.1587/elex.15.20180381

• monopulse array antenna
• integrated
• low-sidelobe
• high-gain
• magic T
• substrate integrated waveguide (SIW)

A W-band low-sidelobe high-gain planar integrated monopulse array antenna is presented in this paper. The antenna comprises two PCB layers, one is 16 x 41 units series-fed patch arrays and the other is a low-loss slot feeding network based on substrate integrated waveguide (SIW) tech- nology. A W-band waveguide magic T is used in this design in order to get sum and difference beams in horizontal azimuth. Such a two-layer integrated array antenna can be fabricated with standard multi-layer PCB process. The maximal measured gain of the proposed antenna, is 26.63 dB, while the maximal null-depth is measured to be is -32.1 dB. Quarter-wavelength transformers are used to achieve Taylor's amplitude distribution in order to suppress sidelobe. The measured sidelobe level in the vertical plane is within the range of -25.7 dB to -26.4 dB. The designed monopulse array antenna has great practical value in W band portable radar.

• 出版日期2018-6-25
• 单位北京理工大学