Millimetre wave antenna for tracking applications in 60GHz band

Abstract

In this thesis, the design, fabrication, and characterization of a 2 x 8 corporate feed antenna array operating at the 60 GHz band for applications of directional purposes like automated vehicle. To design our desired antenna, we are using Microstrip Patches with feed line and we are working on CST. We are creating an array by square patches with one feed line. To design array we considered about array spacing, impedance matching, length and width of feed line with most importance. We have implemented 2 x 8 element array. We had proceeded step by step by designing and analysing of single patch, 4 element array and 8 element array. Then we implement our proposed design and got the desired result. In all those designs we use Roger5880 substrate. We used square patches in our design and we feed them with quarter wave transformer. All the transmission line bands are 90 degree bands in our design. The array pattern is symmetry of our proposed design. We match our whole design with 50-ohm feedline where input impedance is 86.1-ohm. The main purpose of this thesis is to reduce the complexity of making antenna array of higher number of element. We got our desired result at 59.76 GHz which is in unlicensed band (57-64 GHz) and has a maximum realized directivity is 14.3 dB. The bandwidth is roughly 4.2 GHz, with 61.9 GHz the high end and 57.7 GHz the low end of the frequency band. The antenna design will be fabricated later.