Research Article

Design of Symmetrical Beam Triple-Aperture Waveguide Antenna for Primary Feed of Reflector

Table 4

Simulated beamwidths at −3 dB and at −10 dB for various lengths of the parasitic coupling apertures () in the - and -planes for the lower, center, and upper frequencies of WLAN.

Rectangular aperture lengths ()2.412 GHz2.45 GHz2.484 GHz
HPBWBeamwidthHPBWBeamwidthHPBWBeamwidth
(−3 dB)−10 dB(−3 dB)−10 dB(−3 dB)−10 dB
-plane-plane-plane-plane-plane-plane-plane-plane-plane-plane-plane-plane

65°69°210°142°65°68°206°142°65°68°202°140°
66°68°158°138°65°67°148°138°65°67°146°136°
67°67°137°137°67°67°137°137°66°66°138°138°
71°68°138°136°70°67°138°134°70°66°138°132°
75°68°138°134°74°67°140°134°73°67°140°132°