Microstrip Feed Dumbbell-Shaped Patch Antenna for Multiband Applications

2018 ◽  
pp. 789-796
Author(s):  
K. Yogaprasad ◽  
R. Anitha
Keyword(s):  
Patch Antenna ◽  
Microstrip Feed

scholarly journals Varying operating frequency of concentric circular ring patch antenna using high impedance surface

2018 ◽  
Vol 7 (3.29) ◽  
pp. 57
Author(s):  
Rangarao. Orugu ◽  
Srilatha. Gundapaneni ◽  
N Maryleena ◽  
A K.Chaithanya Varma
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Circular Ring ◽  
Impédance Surface ◽  
Impedance Surface ◽  
Antenna Size ◽  
High Impedance ◽  
Circular Patch Antenna ◽  
High Impedance Surface ◽  
Microstrip Feed

In this paper, we design a concentric circular patch antenna excited by microstrip feed and operates at 5.4269 GHz and 6.9419 GHz. After designing the antenna, we would like to tune the frequency without changing antenna size. For that purpose, we use high impedance surface structure to tune the antenna at two different frequencies. A simple mushroom like structure is used as high impedance surface. We will analyze antenna parameters like return loss, gain, directivity, radiation patterns, efficiency, proposed antenna with and without high impedance surfaces and compare the results.  

scholarly journals Broadband Modified Proximity Coupled Patch Antenna with Cavity-Backed Configuration

2021 ◽  
Vol 21 (1) ◽  
pp. 8-14
Author(s):  
Deok Kyu Kong ◽  
Jaesik Kim ◽  
Daewoong Woo ◽  
Young Joong Yoon
Keyword(s):  
Patch Antenna ◽  
Center Frequency ◽  
Impedance Bandwidth ◽  
Broadband Antenna ◽  
Feed Line ◽  
Additional Resonance ◽  
Cavity Structure ◽  
Measurement Results ◽  
Microstrip Feed Line ◽  
Microstrip Feed

A modified proximity-coupled microstrip patch antenna with broad impedance bandwidth is proposed by incorporating proximity-coupled patch antenna into the rectangular open-ended microstrip feed line on a cavity structure. First we design a proximity-coupled microstrip antenna to have a wide bandwidth in the lower band centered at 7 GHz using a cavity-backed ground. To broaden the bandwidth of the antenna to the upper band, we then apply a rectangular open-ended microstrip feed line, adjusting the relative position to the cavity to generate an additional resonance close to 10 GHz. The combination of lower and upper band design results in a broadband antenna with dimensions of 30 mm × 30 mm × 9 mm (0.9λ<sub>0</sub> × 0.9λ<sub>0</sub> × 0.27λ<sub>0</sub>) is designed where λ<sub>0</sub> corresponds to the free space wavelength at a center frequency of 9 GHz. The measurement results verify the broad impedance bandwidth (VSWR ≤ 2) of the antenna at 77% (5.6–12.6 GHz) while the broadside gain is maintained between 6 dBi and 8 dBi within the operational broad bandwidth.

scholarly journals Design and Development of Circular Polarized Conformal Microstrip patch Antenna

2019 ◽  
Vol 9 (2S3) ◽  
pp. 106-109
Keyword(s):  
Parametric Study ◽  
Patch Antenna ◽  
Beam Width ◽  
Conformal Structure ◽  
Microstrip Patch Antenna ◽  
Design And Development ◽  
Conformal Antenna ◽  
Microstrip Patch ◽  
Half Power ◽  
Microstrip Feed

This paper presents broadband circular polarized conformal antenna with a square patch for on-board applications. The substrate is located in between patch and the ground. A novel Circular polarized square patch with microstrip feed with two truncated corners with conformal structure is designed. Using a parametric study on the effect of the position of feed, the antenna parameters VSWR bandwidth, half power beam width and polarization of antenna are analysed. Finally fabrication of conformal square patch on 2.2 dialectic substrate and measured results are discussed.

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 Design and Simulation of Rectangular Microstrip Double Patch Antenna for X Band

2021 ◽  
Vol 9 (10) ◽  
pp. 453-459
Author(s):  
Neha Afreen
Keyword(s):  
Radiation Pattern ◽  
Patch Antenna ◽  
High Frequency ◽  
Return Loss ◽  
Dielectric Substrate ◽  
Substrate Material ◽  
Feed Line ◽  
X Band ◽  
Microstrip Feed Line ◽  
Microstrip Feed

Abstract: In the present work an attempt has been made to design and simulation of rectangular microstrip double patch antenna for X band using microstrip feed line techniques. HFSS High frequency simulator is used to analyse the proposed antenna and simulated the result on the return loss, radiation pattern and gain of the proposed antenna. The antenna is able to achieve in the range of 8-12 GHz for return loss of less than -10 dB. The operating frequency of the proposed antenna is 8.7 GHz with dielectric substrate, ARLON of = 2.5 and h= 1.6mm. Keywords: ARLON substrate material, FEM, Microstrip Feed Line, X band

scholarly journals Miniaturized High-Isolation Dual-Frequency Orthogonally Polarized Patch Antenna Using Compact Electromagnetic Bandgap Filters

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Chunxia Cheng ◽  
Fushun Zhang ◽  
Yangtao Wan ◽  
Fan Zhang
Keyword(s):  
Patch Antenna ◽  
Dual Frequency ◽  
Radiation Patterns ◽  
Electromagnetic Bandgap ◽  
Total Size ◽  
Resonant Frequencies ◽  
High Isolation ◽  
Microstrip Patch ◽  
Opposite Line ◽  
Microstrip Feed

A miniaturized dual-frequency dual-polarization microstrip patch antenna with high isolation between receiving and transmitting ports (operating at 2.1 GHz for receiving and at 2.5 GHz for transmitting) is presented in this paper. The proposed antenna consists of a modified rectangular radiating patch, two 50 Ω microstrip feed lines, and two EBG filters. Two coupling microstrip lines are employed to excite two orthogonal fundamental modes (TM10and TM01). The high isolation is achieved by embedding two novel EBG filters underneath two feed lines to reject the incoming signal from the opposite line. Multilayer configuration, miniaturized EBG filters, and modified rectangular radiation patch contribute to size reduction. The total size is 0.67λ × 0.67λ × 0.03λ , only quarter of the multilayer rectangular radiation patch antenna (1.33λ × 1.33λ × 0.03λ) using common EBG filters with the same performance. Measured results on the reflection coefficients, isolations, and gains for the two frequencies are provided, which agree well with the numerical simulations. Also, measured isolations and radiation patterns at both two resonant frequencies are compared with the antenna without filters. The results show that the proposed method improves isolation by more than 20 dB with little influence on the radiation patterns.

scholarly journals Multiband microstrip patch antenna with rectangular slots on patch for bluetooth and c-band applications

2017 ◽  
Vol 7 (1.2) ◽  
pp. 191 ◽  
Author(s):  
Ajay Dadhich ◽  
J. K. Deegwal
Keyword(s):  
Patch Antenna ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Impedance Matching ◽  
Local Area ◽  
Microstrip Patch Antenna ◽  
Area Network ◽  
Microstrip Patch ◽  
Rectangular Patch ◽  
Microstrip Feed

A Multiband Microstrip Patch Antenna with rectangular slots on patch is proposed for Bluetooth and C band applications. The proposed antenna is fabricated by etching rectangular patch of  dimension on a lossy FR-4 substrate with dimensions 40 mm (L) × 40 mm (W) × 1.6 mm (h) , relative permittivity  =4.4 and loss tangent δ = 0.025. 50 ohm microstrip feed line with inset feed is used for proper impedance matching. Proposed antenna is simulated on Computer Simulation Tool (CST) microwave studio suite software and measurement is done on Network Analyzer (VNA). The proposed multiband antenna can be used for IEEE 802.15.1 (operating in 2.402-2.480 GHz band), wireless local area network and other wireless communication applications.

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