Microstrip antenna based on rectangular patch with arms and partial ground plane for UHF RFID readers

2015 ◽  
Author(s):  
M. H. Ariff ◽  
I. Ismarani ◽  
N. Shamsuddin
Keyword(s):  
Microstrip Antenna ◽  
Ground Plane ◽  
Uhf Rfid ◽  
Rectangular Patch ◽  
Rfid Readers

scholarly journals A COMPACT MICROSTRIP ANTENNA BASED ON H-FRACTAL GEOMETRY FOR MULTI- BAND OPERATION

2021 ◽  
Vol 25 (Special) ◽  
pp. 1-49-1-55
Author(s):  
Zainab S. Muqdad ◽  
◽  
Taha A. Elwi ◽  
Zaid A. Abdul Hassain ◽  
◽  
...  
Keyword(s):  
Mobile Communications ◽  
Fractal Geometry ◽  
Microstrip Antenna ◽  
Communication Systems ◽  
Ground Plane ◽  
Wireless Communication Systems ◽  
Total Size ◽  
Antenna Structure ◽  
Rectangular Patch ◽  
Resonance Frequencies

This paper presents a compact, tri-bands, rectangular patch antenna based on H-Tree fractal slots structure for modern wireless communication systems has been introduced. The antenna structure consists of a 70.70×56mm2 rectangular patch printed on 173×173×1.6mm3 FR4 substrate. H-Tree slots fractal geometry with the defective ground plane on the other side to enhance gain and bandwidth. The suggested antenna is fed by a 50 Ω microstrip line. The antenna shows three resonance frequencies: 0.784, 1.158, and 1.772 GHz. The suggested antenna offers a total size reduction of about 75 %. The designed antenna possesses fractional bandwidths of 3.976 %, 7 %, and 2.7866 % for the first, second, and third resonances, respectively. Finally, the proposed antenna is a candidate for Global System for Mobile communications (GSM).

A Novel UHF RFID Reader Antenna

2010 ◽  
Vol 40-41 ◽  
pp. 384-387
Author(s):  
Xin Zhang ◽  
Lei Li
Keyword(s):  
Microstrip Antenna ◽  
Return Loss ◽  
Simple Structure ◽  
Ground Plane ◽  
Uhf Rfid ◽  
Radiation Characteristics ◽  
Circularly Polarized ◽  
Rfid Reader ◽  
Reader Antenna ◽  
Simulation Results

In this paper, a new ultrahigh frequency circularly polarized microstrip antenna using in RFID reader is proposed. The proposed antenna has a simple structure, it has non-symmetrical rectangular corner truncated square patch, ground plane and a probe feed. To achieve good circular polarization(CP) radiation characteristics, it uses air as the dielectric layer. Simulation results of a constructed prototype with the center operating frequency at 923 MHz showed that the antenna has a return loss S11 of about −24 dB, a gain level of about 9.48 dBi. The antenna has good impedance and radiation characteristics over the required bandwidth, 920-925 MHz (Chinese UHF RFID band).

scholarly journals A Wideband Rectangular Patch Microstrip Antenna using Quad-Slotted Ground Plane

2020 ◽  
Vol 846 ◽  
pp. 012033
Author(s):  
Rudy Fernandez ◽  
Muhammad Aulia Ilham ◽  
Hanalde Andre ◽  
Firdaus
Keyword(s):  
Microstrip Antenna ◽  
Ground Plane ◽  
Rectangular Patch

scholarly journals New Compact Wideband Microstrip Antenna for Wireless Applications

2018 ◽  
Vol 7 (4) ◽  
pp. 85-92 ◽  
Author(s):  
S. Shandal ◽  
Y. S. Mezaal ◽  
M. Kadim ◽  
M. Mosleh
Keyword(s):  
Microstrip Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Computer Applications ◽  
Impedance Bandwidth ◽  
Substrate Thickness ◽  
Resonant Frequencies ◽  
Wireless Applications ◽  
Rectangular Patch ◽  
Rectangular Microstrip Antenna

In this paper, a miniature rectangular microstrip antenna over partial ground plane is presented by utilizing a space-filling property of fractal geometry in this design. It is simulated by High Frequency Software Simulator (HFSS) software, fabricated and tested by Vector Network Analyzer (VNA).Two types of slots are introduced in order to enhance antenna parameters such as bandwidth and return loss S1.1. This antenna is fabricated on FR4 substrate with a small size of (18 x 16 x 1.5) mm3, 1.5mm substrate thickness, 4.3 permittivity and 0.02 loss tangent. To feed this antenna,  microstrip line feed is used. This antenna is implemented for wide bandwidth (4.8-11.6) GHz, and has three resonant frequencies at 5.5GHz, 8.3GHz and 10.7GHz with impedance bandwidth of 6.8GHz. The gap value g between partial ground plane and rectangular patch at top layer is optimized in order to achieve optimal simulated return loss S1.1 is (-46,-32,-14) dB at three resonant frequencies (5.5, 8.3, 10.7) GHz and optimal radiation efficiency of 93.42% with gain of 3.63dB. The simulated results have tolerable agreement with measured results. This antenna is suitable for wireless computer applications within  C and X band  communications.

scholarly journals A compact triband microstrip antenna utilizing hexagonal CSRR for wireless communication systems

2020 ◽  
Vol 9 (5) ◽  
pp. 1916-1923
Author(s):  
Murtala Aminu- Baba ◽  
Mohamad Kamal A. Rahim ◽  
Farid Zubir ◽  
Mohd Fairus Mohd Yusoff ◽  
Adamu Y Iliyasu ◽  
...  
Keyword(s):  
Patch Antenna ◽  
Microstrip Antenna ◽  
Communication Systems ◽  
Low Cost ◽  
Ground Plane ◽  
Ring Resonators ◽  
Wireless Communication Systems ◽  
Optimal Size ◽  
Total Size ◽  
Rectangular Patch

In this paper, a compact triband printed antenna with hexagonal complementary split-ring resonators (CSRRs) for 4G applications is proposed. The proposed multiband antenna is comprised of a rectangular patch antenna on the top plane, while on the ground plane, hexagonal CSRRs are etched for size miniaturization (at the lower bands) and multiband generation. Another effect of the CSRR is the shifting of the initial resonance of the patch antenna from 5.17 GHz to the higher band of 6.18 GHz. The triband of 180 MHz 2.4~2.59, 150 MHz 2.79~2.94 and 420 MHz 6.04~6.46 GHz bands acquired can cover WLAN/Wi-Fi and WiMAX operating bands adequately. This can be achieved by choosing the optimal size and position of the CSRR on the ground plane carefully. The design occupies a total size of 45 x 45 mm2 using the low-cost FR-4 substrate. Good agreements are obtained between the measured results and the simulated, which are discussed and presented.

scholarly journals GAIN AND BANDWIDTH ENHANCEMENT OF RECTANGULAR PATCH MICROSTRIP ANTENNA

2020 ◽  
Vol 17 (34) ◽  
pp. 512-519
Author(s):  
Ahmad Hashim AL-SHAHEEN
Keyword(s):  
Tilt Angle ◽  
Microstrip Antenna ◽  
Communication Systems ◽  
Ground Plane ◽  
Satellite Communications ◽  
New Technique ◽  
Tangent Loss ◽  
Advantages And Disadvantages ◽  
Rectangular Patch ◽  
Communications Systems

Microstrip antennas are very popular for sending and transmitting electromagnetic waves in many communication systems. The microstrip antenna has advantages and disadvantages, like any other antennas. There many benefits like low weight, low profile planar configuration, low costs of fabrication, and easy to connect with microwave circuits. The patch antenna is suited for applications, which are wireless communications systems, cellular phones, pagers, radar systems, and satellite communications systems. The proposed antenna is designed and simulated via HFSS. The antenna substrate, which is between the two conductors’ patch and ground plane, is Duroid of the dielectric constant of δr = 2.2 and tangent loss of tan δ = 0.0009, the dimensions are 20 mm for both length and width; the height is 1.5 mm. The patch of sizes is 16 mm and 15 mm for length and width, respectively. In this article the new technique has been introduced to enhance the gain and bandwidth of the rectangular patch microstrip antenna, a new technique is based on creating a patch as a monopole, the parametric study done by varying the parameter δ is the height of the patch concerning the substrate. The gain and bandwidth are increased when the angle between the patch edge and the substrate is increased. While the benefit increased for tilt angle up to 20° and then decreased smoothly with angle increased, the simulated results show a significant change in the gain and bandwidth comparison with traditional rectangular patch microstrip antenna. The results show an increasing tilt angle increased bandwidth and gain. This antenna can be used in the K band for wireless communication applications.

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