scholarly journals Performance Enhancement of Rectangular Microstrip Antenna with Different Substrate Materials.

2019 ◽  
Vol 9 (2S) ◽  
pp. 577-584
Keyword(s):  
Wireless Communication ◽  
Microstrip Antenna ◽  
Performance Enhancement ◽  
Dimensional Change ◽  
Dielectric Materials ◽  
Bandwidth Enhancement ◽  
Gain Enhancement ◽  
Low Profile ◽  
Narrow Bandwidth ◽  
Rectangular Microstrip Antenna

Above 1GHz , Microstrip antenna is extensively used in Wireless communication. The demand of increased wireless communication applications, needs increase in bandwidth, gain and efficiency of microostrip antenna. Microstrip antenna is a low profile antenna but has narrow bandwidth, low gain and efficiency. In this paper amicrostrip antenna is designed with dimensional change technique to improve bandwidth, gain and efficiency. The enhanced performance of proposed design with different dielectric materials designed and are compared with reference Microstrip antenna. A bandwidth enhancement of 230MHz and gain enhancement of 8.4dB are achieved with proposed antenna.

scholarly journals Gain Enhancement of a Microstrip Patch Antenna Using a Reflecting Layer

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Anwer Sabah Mekki ◽  
Mohd Nizar Hamidon ◽  
Alyani Ismail ◽  
Adam R. H. Alhawari
Keyword(s):  
Patch Antenna ◽  
Low Complexity ◽  
Microstrip Patch Antenna ◽  
Impedance Bandwidth ◽  
Gain Enhancement ◽  
Microstrip Patch ◽  
Low Profile ◽  
Narrow Bandwidth ◽  
Military Systems ◽  
Small Antenna

A low profile, unidirectional, dual layer, and narrow bandwidth microstrip patch antenna is designed to resonate at 2.45 GHz. The proposed antenna is suitable for specific applications, such as security and military systems, which require a narrow bandwidth and a small antenna size. This work is mainly focused on increasing the gain as well as reducing the size of the unidirectional patch antenna. The proposed antenna is simulated and measured. According to the simulated and measured results, it is shown that the unidirectional antenna has a higher gain and a higher front to back ratio (F/B) than the bidirectional one. This is achieved by using a second flame retardant layer (FR-4), coated with an annealed copper of 0.035 mm at both sides, with an air gap of 0.04λ0as a reflector. A gain of 5.2 dB with directivity of 7.6 dBi, F/B of 9.5 dB, and −18 dB return losses (S11) are achieved through the use of a dual substrate layer of FR-4 with a relative permittivity of 4.3 and a thickness of 1.6 mm. The proposed dual layer microstrip patch antenna has an impedance bandwidth of 2% and the designed antenna shows very low complexity during fabrication.

scholarly journals Designing Franklin’s Microstrip Antenna with Defected Ground Structure at MMwave Frequency

2021 ◽  
pp. 559-565
Author(s):  
Ahmad Firdausi ◽  
◽  
I Made Dian Wahyudi ◽  
Mudrik Alaydrus
Keyword(s):  
Microstrip Antenna ◽  
Data Access ◽  
Microstrip Antennas ◽  
Reflection Factor ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Ground Field ◽  
Bandwidth Enhancement ◽  
Ground Structure Method ◽  
Gain Enhancement

The development of telecommunication technology is very rapid at this time has entered into 4G technology. Soon, the 5G technology has a fast data access speed of at least 1 Gbps. To support 5G technology is carried out in-depth research, especially in 5G antennas. This study aims to increase the bandwidth of Franklin's five array microstrip antennas using the DGS (Defected Ground Structure) method for 5G antenna applications at an operating frequency of 28 GHz. The research was conducted by doing rectangular defects in the ground field. This research produced an enhanced bandwidth by 1.707 GHz from 1.196 GHz without DGS (Defected Ground Structure) to 2.9 GHz with DGS (Defected Ground Structure). It means a bandwidth enhancement of 142.47%. At the same time, the design achieved a gain enhancement of 141.7 %. Franklin's microstrip antenna output with DGS (Defected Ground Structure) method from the research simulation results are the bandwidth of 2.9 GHz, reflection factor of -52.95 dB, and Gain 11.80 dB. In comparison, the results of antenna measurements that have been fabricated produce bandwidth of 2 GHz, reflection factor -27.72 dB on frequency 26.6 GHz. The deviation between the simulation and measurement may result in inaccuracies during the fabrication process.

scholarly journals Wearable antenna gain enhancement using reactive impedance substrate

2019 ◽  
Vol 13 (2) ◽  
pp. 708 ◽  
Author(s):  
A.N. Suraya ◽  
T. Sabapathy ◽  
M. Jusoh ◽  
N.H. Ghazali ◽  
M.N. Osman ◽  
...  
Keyword(s):  
Patch Antenna ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Microstrip Patch Antenna ◽  
Antenna Gain ◽  
Gain Bandwidth ◽  
Bandwidth Enhancement ◽  
Gain Enhancement ◽  
Wearable Antenna ◽  
Microstrip Patch

A microstrip patch antenna is designed for a wearable antenna. The performance of microstrip patch antenna loaded with reactive impedance surface (RIS) is described in terms of gain, bandwidth and return loss. The antenna is investigated in two conditions which are conventional microstrip antenna with RIS and without RIS. The designed antenna is also aimed at size reduction therefore it will be suitable for a wearable application. This antenna which is made fully using textile and it is designed for operation in the 2.45 GHz band. The performance of microstrip patch antenna loaded with RIS is described in terms of gain, bandwidth, return loss and radiation pattern. The antenna designed with RIS operates at 2.45 GHz. Bandwidth enhancement is achieved with RIS where the designed antenna can cater frequency from 2.4 GHz to 3 GHz. A gain enhancement is achieved of 20% is achieved compared with the conventional patch antenna. Although the size of the patch is reduced with the introduction of RIS, the overall size of the antenna with the substrate is almost similar to the conventional patch antenna. However, the performance of the antenna is greatly enhanced with the use of RIS.

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