Novel Miniaturized All-Metal UWB Magneto-Electric Monopole (MEM) Antenna for Multistandard Applications

We propose a novel miniaturized all-metal ultrawideband (UWB) magneto-electric monopole (MEM) antenna in this communication. The proposed antenna is composed of a half-ellipse electric monopole and a quarter magnetic loop. The half-ellipse electric monopole consists of a half ellipse with a rectangular slot, a loaded patch, and an L-shape ground fed by a coaxial connector. Enhanced robustness to severe surrounding environments and lower loss can be achieved by employing an all-metal structure instead of the structure including dielectric materials. A prototype was fabricated and measured. Results show that the proposed MEM antenna can operate in the frequency band of 2.5-13 GHz even higher frequency with the miniaturized dimensions of 0.25 lambda x 0.24 lambda x 0.17 lambda that is much smaller than a magneto-electric dipole. A unidirectional wide beam radiation pattern with a 10 dB front to back ratio can be obtained. Moreover, the group delay is analyzed which reveals the antenna with good time domain characteristics. The proposed MEM antenna can be employed as a multifunctional antenna operating for multistandard communication networks in a limited space.

Automated summary

A novel miniaturized all-metal magneto-electric monopole (MEM) antenna is proposed in this paper, featuring compact size, wide bandwidth, robustness to surrounding environments, and low loss. Experimental results demonstrate that the antenna operates in the frequency band of 2.5-13 GHz with good radiation performance.