Design of a Flexible Minkowski-Like Pre-Fractal (MLPF) antenna with different ground planes for VHF LMR
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Date
2011-03-07Author
Lee, E. C.
Soh, Ping Jack
Nur Baya, Mohd. Hashim
Vandenbosch, G. A. E.
H., Mirza
Ismahayati, Adam
Ooi, S. L.
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This work investigates the suitability of a flexible Minkowski-like pre-fractal antenna (MLPF) for
application in the Very High Frequency (VHF) Land and Mobile Radio (LMR) frequency bands (136-174 MHz). The
proposed center-fed, third iteration antenna has been manufactured using both copper tape and ShieldIt Super, a
conductive textile. It has been tested on four types of ground plane, i.e. rectangular, fractal Minkowski, meander line
and L-shaped. It is observed that an L-shaped ground plane performs the best, and provides an additional frequency
tuning parameter to the overall structure. Simulated and measured S11 show a good agreement and the proposed antenna
is working within the desired frequency range. A simulated gain and efficiency of more than 1.9 dB and 76 %,
respectively, are obtained. The measurement in a Satimo SG64 anechoic chamber provided 0 dB gain and about 48 %
efficiency.
URI
https://lirias.kuleuven.be/bitstream/123456789/301220/1/PS1-25.pdfhttp://dspace.unimap.edu.my/123456789/14074