CST – Computer Simulation Technology

Development of Broadband Dual-Linear Polarisation Probe-Fed Microstrip Patch Antennas
José Luis Vazquez Roy, Viktor Krozer, Jørgen Dall
ESA Advanced RF Sensors for Earth Observation Workshop
December, 2006
We present design and realization of an antenna array based on cavity backed microstrip patch antenna with an operating relative bandwidth exceeding 20% at a return loss level of RL>15dB. The antenna array of 4 elements does not show any compromise in bandwidth and exhibits side-lobe levels better than 15 dB with a gain of around 12 dBi. This fact emphasizes that the excitation structure is not particularly sensitive to small variation in the geometry of excitation. Excellent agreement has been achieved between measurements and predictions for the single element design. Both predicted and measured return loss and antenna patterns show good agreement, respectively.

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