A meandering substrate integrated waveguide with slots for frequency scanning array

作者：Chiu, Leung^*

来源：Microwave and Optical Technology Letters, 2014, 56(6): 1478-1483.

DOI：10.1002/mop.28358

• doppler radar
• frequency scanning array
• substrate integrated waveguide

A meandered substrate integrated waveguide (SIW) has been proposed for the frequency scanning array that has potential application of the low cost 24-GHz Doppler radar system. All radiating slots are connected in series using a short circuit ended SIW; therefore, its radiation beam can be steered with frequency. The modified antenna with meandering structure is proposed to enhance the scanning range. The physical slot spacing is kept at about half free space waveguide, whereas the electrical spacing is about 540 degrees at the center frequency of 24 GHz. A broadside radiation is achieved at 24-GHz frequency and a +/- 30 degrees continuous scanning range is experimentally confirmed with the frequency band from 23 to 25 GHz. Another antenna with center frequency of 77 GHz is designed and tested. It also achieves a +/- 30 degrees continuous scanning range with the frequency band from 75 to 79 GHz.

• 出版日期2014-6
• 单位香港城市大学