scholarly journals A Dual-Band Single-Feed Switched Beam Antenna for WLAN

2017 ◽  
Vol 63 (4) ◽  
pp. 405-410
Author(s):  
Pichaya Chaipanya ◽  
Pawarit Rattanakriengkai ◽  
Pijitra Potup ◽  
Laliphat Lapourailers
Keyword(s):  
Ieee 802.11 ◽  
Patch Antenna ◽  
Simple Structure ◽  
Signal Strength ◽  
Beam Pattern ◽  
Dual Band

Abstract This article presents the dual-band of a single patch antenna that can operate at a frequency of 2.47 to 5.04 GHz, which is available in WLANs (IEEE 802.11). The beam pattern of the antenna can be switched by changing the position of shorted-circuit points at each edge of the antenna. The advantage of the proposed antenna is that it is a simple structure which is small in size, weighs little and has an easily adjustable beam. In addition, the antenna is tested under real circumstances using the existing WLAN infrastructure. The results confirm that the signal strength can be improved when the proposed switched beam antenna is utilized.

scholarly journals A quad band planar slotted microstrip patch antenna for wireless applications

2020 ◽  
Vol 9 (4) ◽  
pp. 1477-1485
Author(s):  
Reshma Roy ◽  
Apurva Singh ◽  
Om Prakash Kumar ◽  
Tanweer Ali ◽  
Manohara Pai M. M.
Keyword(s):  
Patch Antenna ◽  
Simple Structure ◽  
Impedance Matching ◽  
Dual Band ◽  
Wireless Applications ◽  
Dual Band Antenna ◽  
Compact Size ◽  
Different Types ◽  
Rectangular Strips ◽  
Ground Part

This research paper presents two different types of multiband patch antenna. The first design is a dual-band antenna and the second design is a quad-band antenna. Both the antennas have a compact size of , and is designed on FR4 substrate with loss tangent (=0.02, height (h)=1.6 mm, with dielectric constant of 4.4. The dual-band antenna operates at frequencies 3.9 and 5.71 GHz. These dual band operations are accomplished by utilizing L-shaped slot in the ground part and T-shaped slot in the radiating part of the patch antenna. The gain corresponding to the two frequency bands are 1.27 and 1.35 dB, respectively. The quad band antenna operates at frequencies 3.6, 4.9, 7.4 and 8 GHz. The gain corresponding to these frequencies are 0.18, 1.69, 2.25 and 3.99 dB. For achieving quad band operation from the dual band antenna the back plane L-shaped slot is modified by cutting a rectangular strip in the middle, hence dividing it into two different slots. The front plane is also modified by introducing two rectangular strips to the T-shaped patch. The proposed antenna shows multiband and has the advantage of simple structure compact size and good impedance matching. All the simulations of the proposed design are carried out in HFSS v.13.0.

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