On slotted waveguide antenna design at Ka-band
Date
1998
Authors
Theron Isak Petrus
Cloete Johannes Hendrik
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Abstract
This paper deals with the design of slotted waveguide arrays at Ka-band (38 GHz). Practical machining tolerances are considered. In order to achieve low side lobes throughout it is critical that the centre line of the waveguide broad wall is determined very accurately. An error in this position results in systematic errors in the excitation of the slots. This leads to grating lobe like side lobes, the level of which depends on the amount of misplacement. However, the angle at which the side lobe occurs is independent of the position error.
Description
Keywords
Antenna lobes, Systematic errors, Waveguides, Slotted waveguide antennas, Slot antennas
Citation
Proceedings of the South African Symposium on Communications and Signal Processing, COMSIG