A Multi-Band Magneto-Electric Dipole Antenna with Wide Beam-width

A multi-band and wide beam-width magneto-electric (ME) dipole antenna is proposed in this report. The proposed antenna has a simple structure, which consists of four $\Gamma $ -shaped electric plates which can change the current distribution and realize four operating frequency bands. To explain the characteristics of the proposed antenna, some key parameters are analyzed in detail. The multi-band antenna can realize the operating frequency bands (the reflection coefficient ≤ -10 dB) from 1.86 to 1.92 GHz (3.2%) in the first frequency band, from 2.30 to 2.65 GHz (14.2%) in the second frequency band, from 3.40 to 3.80 GHz (11.1%) in the third frequency band, and from 5.30 to 6.92 GHz (26.5%) in the fourth frequency band, respectively. The measured results are in good agreement with the simulated ones by fabricating and measuring the proposed antenna. It is a good method to realize the performances of the quad-band and wide beam-width with a simple structure.