Open-End Waveguide Array Antenna

WIPL-D Pro offers easy parametric modelling and fast simulation of waveguide structures in general. Such purely metallic structures require very low number of unknowns.

The abilities of the tool are demonstrated in this application note for simulation of the array antenna with large number of waveguide open-end elements.

Owing to efficient modelling by using canonical BoR objects, simulations were carried by using very low number of unknowns. The hardware platform is every day work PC or laptop, without the need for using any expensive hardware. Usage of two symmetry planes yields simulation time in seconds per frequency point.

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Series-fed Travelling Wave Patch Array

A detailed convergence study of the series-fed travelling wave patch array is shown. The simulations are performed at 77 GHz in the WIPL-D Software suite – a full 3D EM simulation tool based on the method-of-moments.

Simulated travelling wave patch antenna array has 10 elements. The focus was to investigate the return loss of the array with absolute accuracy. In addition, the patch array is simulated with finite thickness metallization (18 um) which produces important effects at such high frequencies. The metallization thickness of the traveling wave patch array elements was introduced along with the feeding mechanism which emulates the realistic coaxial feeding.

Owing to the efficient WIPL-D EM Software simulations, the entire simulation runs in under 10 seconds at regular desktop PC or laptop. This enables users of WIPL-D EM software to run numerous simulations and investigate important EM effects. The specific attribute of the array is high frequency (77 GHz) and modern real-life application of similar antenna array structures.

At the end, WIPL-D Team successfully showed the series fed travelling wave patch array antenna beam squint by displaying the radiation pattern at the 3 selected frequencies.

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