Design of transmitarray compact antenna test range at millimetre wave band

In this paper, a novel compact antenna test range based on transmitarray (TA), transmitarray compact antenna test range (TACATR), is proposed. A non-negligible parameter, central cell reference phase (CRP), is defined to harmonize the disturbance field. The CRP not only determines the physical structure of TA, but also can adjust the phase of the desired plane wave field of the quiet zone (QZ). Several strategies are proposed to enhance the performance of QZ of TACATR. The strategies include selecting CRP and the layout of TACATR. To validate the feasibility of TACATR, a 169.6 mm × 169.6 mm TA working at 28 GHz is designed, simulated and fabricated. The measured amplitude peak to peak value (P2P) of the middle QZ plane field is 1.5 dB and the phase P2P is 9.4°.