Wifi Patch Antenna For Free Public Full

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The proposed antenna resonates at 1. 65 GHz frequency and has freq uency range from 1.01 to 2. 62 GHz giving a wide band width of 8 8.57. Figure 5- shows the smith chart plot figure 9- shows the 3D radiation pattern w hich is obtained from IE3D.

The antenna is mainly intended to be used for WiMAX (2.2-3.4 GHz) WLAN (2.402.48 GHz) wireless applications.

Measurement shows that wide bandwidth of 88.57 is obtained covering the frequency range from 1.01 to 2.62 GHz.

Next, the results of this microstrip feed line patch antenna is designed by using Zeland IE3D software.

Geometry of proposed microstrip antenna Fabricated model of the proposed antenna Measured Return loss Vs frequency of proposed microstrip antenna shows the return loss plot of proposed microstrip antenna.

The proposed antenna resonates at 1.65 GHz frequency and has frequency range from 1.01 to 2.62 GHz giving a wide band width of 88.57.

Figure 5-shows the smith chart plot figure 9-shows the 3D radiation pattern which is obtained from IE3D.

Gain Vs frequency graph is shown at figure 8 and have high gain up to 6 dBi and good radiation efficiency of about 99 shown in figure 7.

Smith chart plot of the proposed microstrip antenna Figures - uploaded by V.

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Wifi Patch Antenna For Free Public Full

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The antenna is mainly intended to be used for WiMAX (2.2-3.4 GHz) WLAN (2.40 2.48 GHz) wireless a pplications.

Measure ment shows that wide bandwidth of 88.57 is o btained covering the frequency range from 1.01 t o 2.62 GHz.

INTRODUCTION Due to the advancement in the design and production range in the electronics d evices and wirele ss technology, they have greater emphasis on the antenna designs for future development.

Wideband refers to signal or syste m that either has a large relative bandwidth (BW) o r a large absolute bandwidt h.

These bandwidths give some advantages with respect to signal robustness, information content andor implementation simplicit y.

These systems also have some fundamental di fferences from the conventional narrowband system s.

Microstrip patch antennas ha s conformal and planar structure, compactness, low-profile, directive with high transmission efficiency, light weight, lo w profile, low cost and ease of integration with microwave circuit and po rtable co mmunication equipments, thats why it finds place in much applications since 1970s.

A rectangular patch is a most commonly employed microstrip antenna.

The rectangular patch antenna is approximately a one-half wavelength long section of rectangular microstrip transmission line.

We have taken ref.

It is easy to model and easy to match by controlling the inset position.

Also easier to fabricate as it is a just conducting strip connecting to the patch and therefore can be considered as extension of patch.

The proposed antenna has bee n designed on glass epox y substrate to give a wide bandwidth o f 88.57, and maximum radiating efficiency of about 99.

II. DESIGNING THE PROPOSED ANTENNA A microstrip antenna and its coordinate system are illustrated in Fig.1.

T he microstrip antenna t hat has the patch length L along the x - axis and the patch width W along the y -axis is located on the surface of a grounded dielectric substrate with the thickness of h.

The di-electric material of the substrate ( r ) selected for this design is glass epo xy which has a dielectric co nstant of 4.4 and loss tangent equal to 0.001.

Figure 1- Geometry of proposed microstrip antenna.

The low value of dielectric constant increases the fringing field at the patch periphery and thus increases the radiated power.

The height of t he substrate is kept small 1.6 mm is used here in the proposed design.

RESULT AND DISCUSSION Figure 4 shows the ret urn loss p lot of proposed microstrip antenna.

The proposed antenna resonates at 1.

GHz frequency and has freq uency range from 1.01 to 2.

GHz giving a wide band width of 8 8.57.

Figure 5- shows the smith chart plot figure 9- shows the 3D radiation pattern w hich is obtained from IE3D.