TITLE:
Multiband Monopole Antenna with Sector-Nested Fractal
AUTHORS:
Jie Zhang, Wei Zhang
KEYWORDS:
Sector-Nested, Fractal Antenna, Trapeziform Ground Plane, Multi-Frequency
JOURNAL NAME:
Wireless Engineering and Technology,
Vol.6 No.3,
July
8,
2015
ABSTRACT: A kind of novel
multi-frequency monopole antenna with sector-nested fractal is proposed and designed,
which is nested with a series of similar circular sector elements. By means of the trapeziform ground plane with the tapered CPW
(coplanar waveguide) feeder in the middle, the antenna’s radiation performance
is greatly improved. The antennas can synchronously operate in three frequencies,
covering the working frequency bands of WLAN/WiMAX, 2.44 GHz/3.5 GHz/5.2 GHz - 5.8
GHz. The pattern and impedance measurements of antenna show a good performance over
the WLAN/WiMAX band; it possesses a near omni-directional characteristic and
good radiation efficiency. Moreover, the antenna is miniature and its design
idea can be easily applied into other types of nested structure, the features
of which make the proposed antenna have a promising application in other
fields.