The E And H Antenna Design For Broadband Application

Nurul Hanis , Mohamad Nasir (2009) The E And H Antenna Design For Broadband Application. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The major weakness of a conventional microstrip patch antenna is its narrow bandwidth. A E and H antenna is designed based on the structure of E and H itself to have a wider bandwidth to overcome this problem. The broadband characteristic is obtained by proper selecting the E and H structure. Two parallel slots and two series slots are incorporated into the patch antenna. The parallel slots reduce the size of the antenna, while the series slots reduce the return loss of the antenna. The H antenna is designed based on stepped impedance resonator while E antenna is based on transmission line model. Then, by intersecting both antennas, the E and H antenna is obtained. The E and H antenna has a compact dimension of 2 42.36 23.77mm . The simulation of the antenna is carried out to obtain the return loss, bandwidth, gain, directivity and radiation pattern. Next, the antenna is fabricated on FR4 board. The E and H antenna offers a low profile, broadband and a compact antenna element. Measurement results also showed satisfactory performance of the antenna with an achievable bandwidth of 65.6%. The directivity of this antenna is 3.538dBi with achievable gain of -25.9dB which is an inefficient value of gain for an antenna.

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