Effects of Slots On Resonant Frequencies of a Microstrip Patch Antenna

2018 ◽  
Author(s):  
Rina Parikh ◽  
Bharati Singh
Keyword(s):  
Patch Antenna ◽  
Microstrip Patch Antenna ◽  
Resonant Frequencies ◽  
Microstrip Patch

Microstrip Hexagonal Fractal Antenna for Military Applications

Frequenz ◽  
2019 ◽  
Vol 73 (9-10) ◽  
pp. 321-330 ◽  
Author(s):  
Manisha Gupta ◽  
Vinita Mathur ◽  
Arun Kumar ◽  
Virendra Saxena ◽  
Deepak Bhatnagar
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Microstrip Patch Antenna ◽  
Antenna Design ◽  
Substrate Thickness ◽  
Fractal Antenna ◽  
Resonant Frequencies ◽  
Microstrip Patch ◽  
Military Applications ◽  
Microstrip Feed

Abstract Novel and miniaturized hexagonal Microstrip patch antenna design is presented in this paper. Patch is fractured using Sierpinski and Koch structures to make the antenna applicable for multiband applications. Additionally ground is defected to enhance the bandwidth and further size is reduced. Material FR-4 (εr = 4.4)has been chosen to design proposed antenna and substrate thickness as 1.59 mm. Microstrip feed technique is used as it provides better results. Gain obtained in this case is 5.57 dB, 7.49 dB and 4.02 dB with bandwidth as 606.8 MHz, 507 MHz and 2 GHz at 8.3 GHz, 12.6 GHz and 17.6 GHz resonant frequencies. The antenna is better to other designs in terms of parameters like bandwidth, directivity, polarization, gain, return loss and dimension. The antenna provides application for military appliances. A good concord is obtained in Simulated and measured results.

scholarly journals Miniaturization of Strips loaded Hexagonal Microstrip Patch Antenna for Advanced Communication

2019 ◽  
Vol 8 (12) ◽  
pp. 2753-2757
Keyword(s):  
Patch Antenna ◽  
Coplanar Waveguide ◽  
Wide Band ◽  
Microstrip Patch Antenna ◽  
Ultra Wide Band ◽  
Radiation Characteristics ◽  
Resonant Frequencies ◽  
Microstrip Patch ◽  
X Band ◽  
Epoxy Material

A spiral fork shaped hexagonal micro strip patch antenna is designed to operate at different frequencies, which are in ultra-wide band range (3.1-10.6GHz). The newly presented antenna is simulated on a Flame Retardant - 4 (FR4) epoxy material with dielectric constant 4.4and overall size of structure is 28*28mm2 . Coplanar waveguide feeding (CPW) is used in this design for easy simulation. This proposed triband structure resonates at 1.36GHz, 5.74GHz and 8.8GHz. The proposed pentaband antenna resonates at 2.38GHz, 3.64GHz, 6.76GHz, 7.36GHz and 8.98GHz with corresponding impedance bandwidths are 200MHz, 70MHz, 170MHz, 520MHz and 420MHz. The peak gains at their resonant frequencies are 1.77dB, 2.45dB, 3.53dB, 4.54dB and 2.28dB respectively with good radiation characteristics. These antennas are suitable for S - , C - and X - band applications.

scholarly journals Frequency tuning varactor-loaded reconfigurable antenna for m-WiMAX and WLAN applications

2019 ◽  
Vol 13 (2) ◽  
pp. 779
Author(s):  
S. M. Shah ◽  
K. Hamdan ◽  
Z. Z. Abidin ◽  
F. C. Seman ◽  
S. A. Hamzah ◽  
...  
Keyword(s):  
Patch Antenna ◽  
Frequency Tuning ◽  
Microstrip Patch Antenna ◽  
Dual Band ◽  
Reconfigurable Antenna ◽  
Resonant Frequencies ◽  
Varactor Diode ◽  
Microstrip Patch ◽  
Tunable Device ◽  
Tan Δ

A design approach for a microstrip patch antenna to achieve the reconfigurable dual-band operation with a tunable device is presented in this work. The approach uses a BB833 varactor diode in the middle of a slotted patch antenna which which is able to produce dual-band resonant frequencies. The reconfigurable antenna is designed and simulated in CST Microwave Studio® software and is later, fabricated on a FR-4 substrate with a dielectric constant,  of 4.5, loss tangent, tan δ of 0.019 and thickness, h of 1.6 mm. By changing the DC voltages of the varactor diode, different capacitance values of the varactor diode are obtained which dictate the specific resonant frequencies. From the simulation results, the capacitance value of 0.5 pF with a bias voltage of 2.0 V is chosen as it produces the required dual-band resonant frequencies at 3.38 GHz and 5.37 GHz for desired applications in the m-WiMAX and WLAN bands.

Dielectric Properties and Microstrip Patch Antenna Performances of 0.95MgTiO3-0.05CaTiO3 Microwave Ceramics

2013 ◽  
Vol 706-708 ◽  
pp. 64-68 ◽  
Author(s):  
Zhao Xian Xiong ◽  
Guo Feng Zhang ◽  
Hao Xue ◽  
Jin Bao Huang ◽  
Qiang Zheng ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Patch Antenna ◽  
Return Loss ◽  
Microstrip Patch Antenna ◽  
Substrate Thickness ◽  
Zero Temperature ◽  
Microwave Ceramics ◽  
Resonant Frequencies ◽  
Microstrip Patch ◽  
Quality Factor Q

τMicrowave dielectric properties of 0.95MgTiO3-0.05CaTiO3 ceramics and their performances as H-shaped microstrip patch antenna were investigated. Best values of dielectric constant (εr) and quality factor (Q×f) of 19.00 and 66800GHz, respectively, were obtained for the microwave ceramics sintered at 1300°C for 3h. A near-zero temperature coefficient of resonant frequency (τf) of -4.7ppm/°C was obtained for the ceramics with sintering 1280°C for 3h. A new kind of H-shaped microstrip patch antenna with two resonant frequencies was fabricated by using of this kind of ceramics as antenna substrate. The return loss bandwidth of the patch antenna was extended with the increasing of substrate thickness at both resonant frequencies of the antennas, around 1.530GHz and 2.750GHz, respectively.

scholarly journals ANALYSIS OF A MODIFIED GROUND PLANE MICROSTRIP PATCH ANTENNA USING CO-AXIAL FEED

2020 ◽  
Vol 5 (2) ◽  
pp. 194-200
Author(s):  
Rahul Tiwari ◽  
Dr. Ashish Bagwari ◽  
Dr. Vivek Singh Kushwah ◽  
Abhishek Senger
Keyword(s):  
Patch Antenna ◽  
Dielectric Material ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Impedance Bandwidth ◽  
Resonant Frequencies ◽  
Microstrip Patch ◽  
Rectangular Microstrip Patch Antenna

A wandered probe-fed rectangular microstrip patch antenna (RMPA) with rectangular slots on a finite ground plane with dielectric material substrate (4.4) is proposed in this paper. The proposed antenna finite ground plane dimension is only 18mm x 21mm. The simulated result shows two distinct resonant frequencies at 4.5 and 9.5 GHz. A 10-dB wide-impedance bandwidth of 1000 MHz and 4100 MHz ranging from 3.8-4.8 GHz and 5.9–10 GHz is achieved. The proposed antennas have achieved wider bandwidth (51.3%) with reasonable gain (4 dBi).

scholarly journals Study of two-layered circular patch using moment method and genetic algorithms

2019 ◽  
Vol 9 (6) ◽  
pp. 5368
Author(s):  
Ahmed Mahamdi ◽  
Siham Benkouda ◽  
Mounir Amir ◽  
Sami Bedra
Keyword(s):  
Patch Antenna ◽  
Moment Method ◽  
Present Model ◽  
Microstrip Patch Antenna ◽  
Effective Radius ◽  
Resonant Frequencies ◽  
Microstrip Patch ◽  
Proposed Model ◽  
Layered Substrate ◽  
Fringing Capacitance

<table width="356" border="1" cellspacing="0" cellpadding="0"><tbody><tr><td valign="top" width="387"><table width="593" border="1" cellspacing="0" cellpadding="0"><tbody><tr><td valign="top" width="387"><p>In this paper, new expressions for the effective radius and fringing capacitance have been derived to predict accurately the resonant frequency of the two-layered circular microstrip patch antenna. These expressions are obtained based on genetic algorithm and the data base is generated using moment method (MOM). The proposed model is very simple, fast, and valid for an entire range of permittivities and thicknesses of two-layered substrate. The present model has been validated by comparing our numerical results obtained for the resonant frequencies with measurements. Finaly, the effect of the two-layered substrate on the resonant charateristics of the circular microstrip patch antenna has been presented.</p></td></tr></tbody></table></td></tr></tbody></table>

Metamaterial Structure with Negative μ and ε for reduction of return loss of Microstrip Patch Antenna

2012 ◽  
Vol 2 (8) ◽  
pp. 130-133
Author(s):  
Amandeep Singh Amandeep Singh ◽  
◽  
Sankul Agarwal ◽  
Vaibhav Sharma ◽  
Shivam Pandita
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Microstrip Patch Antenna ◽  
Metamaterial Structure ◽  
Microstrip Patch
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