Low-cost broadband millimetre-wave array antenna using waveguide/microstrip feed network and slot pair |
| |
Authors: | Oh S.-S. Heo J. Kim D.-H. Lee J.-W. Song M.-S. Kim Y.-S. |
| |
Affiliation: | Dept. of Electr. & Comput. Eng., Univ. of Manitoba, Winnipeg, Man., Canada; |
| |
Abstract: | A low-cost broadband millimetre-wave planar 30/spl times/30 array antenna is presented. The antenna is fed by a microstrip feed network in the H-plane to decrease fabrication costs, and a waveguide feed network in the E-plane to reduce the feed line loss. The waveguide and microstrip feed network are coupled through the proposed slot pair. The slots are placed one quarter of a guided-wavelength distance apart, so that the reflected waves from the slots cancel each other. A conductive bar is laid above the slots to increase the coupling, which increases the antenna gain by about 1 dBi. The maximum gain is 30.5 dBi at 41.5 GHz. The measured bandwidth is as broad as 7.1%. |
| |
Keywords: | |
|
|