Dual-Mode Patch Filter with Metal Wall Structures

<table>Simulated frequency response relative to changes in the height  <svg height="16.3125" id="M27" style="vertical-align:-3.27605pt" version="1.1" viewbox="0 0 15.225 16.3125" width="15.225" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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International Journal of Antennas and Propagation

Dual-Mode Patch Filter with Metal Wall Structures

Figure 3