Design a compact multiband PIFA antenna design for wireless communication with mimo implementation

The goal is to design a compact antenna for a wireless communication application.

This thesis presents a design of compact multiband Planar Inverted F Antenna

consist of a radiating patch with a hook shaped slot and FR4 substrate is used

with dielectric constant 4.4. By cutting a hook-shaped slit at radiating patch

good dual-band property can be achieved which can operated at microwave access

(WiMAX) band from [url removed, login to view] to [url removed, login to view] and local area network (WLAN) band 5.2

GHz ( w.r.t S11  -10dB) In addition, by using a modi ed ground plane with a ro-

tated I-shaped an the pair of square-ring slot, additional resonances at the higher

frequencies are generated which suitable for [url removed, login to view] GHz downlink of X-band

satellite communication systems and 8.02-8.4 GHz international telecommunica-

tion union (ITU) applications and measured Return loss power, gain, directivity,

current distribution, radiation pattern etc. The antenna was studied with para-

metric study approach to gain the required speci cations. Slot and Shorting Plates

element techniques were used to reduce the size and an increase bandwidth of the

antenna. Then verify the simulated results. Fairly Omnidirectional and Direc-

tional patterns are obtained which are desired for all communication devices.

A major disadvantage of the PIFA antenna is its narrow impedance bandwidth.

Hence, it is desirable to nd methods that can enhance the bandwidths of the

PIFA antennas. by adding an inverted-U-shaped parasitic element Lambda/2 along with patch then bandwidth enhance in upper band and lower band of dual band PIFA

Antenna and comparative analysis of dual band PIFA with Parasitic and without

Parasitic element and measured its Return loss power, gain, directivity, current

distribution and radiation pattern etc.

It is a demand for the wireless devices to own more than one antenna part

to realize higher information rates, therefore e orts were created to implement

quite one part of same size Ground plane so, a two element design was studied

for the MIMO con guration. The most challenging task was to own lower mutual

coupling and also the Envelope correlation (EC) value  0.5. A detailed studied

was created on the position of the second antenna and best position was selected

from the di erent cases. The planned style operates at each bands maintaining a

value of EC below 0.5 over the band of operation and calculating Mean E ective

Gain(MEG)that is improve diversity performance of MIMO.

Keywords: Planar Inverted Folded Antenna, Slot Antenna, Parasitic Ele-

ment, Bandwidth Enhancement, MIMO, Diversity Parameters

Taidot: Mobile App Development, Langaton

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Projektin tunnus: #8650985

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