Slot Loaded Circular Patch Antenna
A slot loaded circular patch antenna is considered to show the manner in which a pin fed patch antenna is simulated in FEKO. It is shown in [1] that by loading a circular patch with a number of slots, the resonant frequency of the antenna can be decreased. Hence, the patch size for a required resonant frequency is reduced. Figure 1 shows the simulation model of such a slot loaded circular patch (pin feed in red) which reduces the resonant frequency from 7.7GHz to 5.17GHz. The patch resides on a dielectric with εr = 2.6 which is modeled with a Green function layer. Note the mesh refinement at the pin fed point on the cicular patch.
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Figure 1: Simulation model of slot
loaded circular patch antenna.
Pin fed shown in red. |
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Figure 2 displays the reflection coefficient at the feed point of the
slot loaded antenna to that of the unloaded circular patch.
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Figure 2: Resonant frequency of
the slot loaded antenna
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References
| [1] | C.B. Ravipati, "Compact Circular Microstrip Antenna for Conical Patterns", Antennas and Propagation Society International Symposium, 2004. |
