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A FREQUENCY RECONFIGURABLE MEANDERED SLOT CUT RECTANGULAR PATCH ANTENNA USING PIN DIODES

By R. Baruah and N. S. Bhattacharyya

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Abstract:
A frequency reconfigurable patch antenna is proposed. The antenna has a rectangular patch with two meandered slots. It can be switched between four bands using two PIN diodes by altering current distribution across the slot edges. The overall dimension of the antenna patch is 11.51 mm × 8.37 mm and fabricated on an FR4 substrate. The design is investigated by simulation and measurement, and the result includes S11 parameters, radiation patterns, measured directivity and gain. With different combinations of PIN diode biasing conditions, the antenna can be set to 6.80 GHz, 7.34 GHz, 7.80 GHz and 8.18 GHz, which collectively covers a continuous frequency range of 1.80 GHz (- 10 dB band width). The antenna also shows consistent radiation patterns at all the reconfigured frequency bands with an average beam width of about 75°. In the accessible frequency range an average gain of 5.14 dBi and low level of cross polarizations are also recorded. A good agreement between measured and simulated results validates the presented concept of frequency reconfiguration.

Citation:
R. Baruah and N. S. Bhattacharyya, "A Frequency Reconfigurable Meandered Slot Cut Rectangular Patch Antenna Using PIN Diodes," Progress In Electromagnetics Research C, Vol. 77, 81-89, 2017.
doi:10.2528/PIERC17061201
http://www.jpier.org/pierc/pier.php?paper=17061201

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