Rapid Measurement of Dielectric Substrate Permittivity at X Band

1975 ◽  
Vol 24 (1) ◽  
pp. 82-83 ◽  
Author(s):  
C. K. Campbell
Keyword(s):  
Dielectric Substrate ◽  
Rapid Measurement ◽  
X Band

scholarly journals NESTED CIRCULAR ELLIPTICAL SHAPED MIXED LOOP RESONATOR BASED BANDPASS FILTER FOR MICROWAVE APPLICATIONS / PENAPIS JALUR BERASASKAN CAMPURAN GEGELUNG PENYALUN BERBENTUK SARANG BULAT UNTUK APLIKASI GELOMBANG MIKRO

2020 ◽  
Vol 82 (2) ◽  
Author(s):  
Mohammad Rashed Iqbal Farque ◽  
Md. Jubaer Alam ◽  
Muhamad Roszaini Roslan ◽  
Mohammad Tariqul Islam
Keyword(s):  
Refractive Index ◽  
Relative Permittivity ◽  
Bandpass Filter ◽  
Dielectric Substrate ◽  
Simulation Software ◽  
Double Negative ◽  
Scattering Parameters ◽  
Current Distributions ◽  
X Band ◽  
Microwave Applications

An elliptical thumb printed nested circular mixed loop resonator (MLR) is introduced in this article to design a multiple bandpass filter for microwave applications. The proposed structure is composed of a series of loop resonators on a Rogers RT-5880 dielectric substrate, where the overall system is developed into a 377Ω framework. Similar structure is designed on both sides of the substrate and an investigation is made on scattering parameters, relative permittivity, permeability, refractive index and current distributions. The 12 ´ 14 mm2 structure is designed and evaluated by a simulation software CST microwave studio and the metamaterial characteristics have been classified by Nicolson-Ross-Weir method at the filtering frequencies. The proposed filter shows resonances at 2.65 GHz, 5.85 GHz, 7.12 GHz, and 8.59 GHz, and the measured results are compared with the simulated ones. With a favorable design and double-negative characteristics, this design is suitable for multiple bandpass filter particularly for S, C, and X-band applications.

Fan Shaped Patch with Fan Shaped Defected Ground Structure is designed for X-band Applications

2018 ◽  
Vol 8 (4) ◽  
pp. 57
Author(s):  
K.S. Ravi Kumar ◽  
Lalbabu Prasad ◽  
B. Ramesh ◽  
K.P. Vinay
Keyword(s):  
Dielectric Constant ◽  
Low Cost ◽  
Dielectric Substrate ◽  
Substrate Material ◽  
Frequency Range ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Band Region ◽  
X Band ◽  
Simulation Results

In this novel work a simple Fan Shaped Patch (FSP) Antenna is designed for X-band applications using Fan Shaped DGS structure to improve the Bandwidth and Gain. The Antenna is designed by using low cost FR4 Epoxy dielectric substrate material having dielectric constant of 4.4 with size 31.4x28.33x1.6mm3. The Antenna is simulated by using CST MW studio2014 software to analyze the results. The simulation results shows reasonable |S11|<-10 for the frequency range over 8.38 to 11.59GHz in X-band region.

scholarly journals MULTI BAND MICRO STRIP PATCH ANTENNA FOR WIRELESS APPLICATIONS

2021 ◽  
Vol 25 (Special) ◽  
pp. 1-152-1-156
Author(s):  
Lina M. Nori ◽  
◽  
Raad H. Thahir ◽  
Keyword(s):  
Patch Antenna ◽  
Relative Dielectric Constant ◽  
Satellite Communications ◽  
Dielectric Substrate ◽  
Wireless Applications ◽  
Microstrip Patch ◽  
Triangular Patch ◽  
X Band ◽  
Copper Material ◽  
Zigzag Shape

This research paper aims to design a new shape of the microstrip patch antenna. Combining a half circular and zigzag shape of a triangular patch antenna, we selected two different shapes of microstrip patch to obtained modern shape no one mentioned it before and it’s seems like a tulip rose, so this design achieved to works for multiband. The dimensions of the proposed antenna are (38×30×1.6) mm3 applied on the dielectric substrate FR-4, which has a relative dielectric constant of (εr=4.3) and loss tangent (tanδ=0.002). Both patch and ground are copper material with a thickness (t=0.035 mm). So four-band are achieved (5.1612-5.3874) GHz, (8.8729-10.067) GHz, (10.476-11.091) GHz, and (13.819-30) GHz. The return loss (S11) are (-20.784) dB, (-30.532) dB, (-19.246) dB and (-29.789) dB respectively. The antenna is printed by using FR-4 substrate and simulated by CST-Microwave studio software. This antenna works for various wireless applications such as Wi-FI, C band, X band, Ku band, Ka-band, cellular phones, and satellite communications.

scholarly journals Design of a Compact Quad-Band Slot Antenna for Integrated Mobile Devices

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Jian Dong ◽  
Xiaping Yu ◽  
Guoqiang Hu
Keyword(s):  
Mobile Devices ◽  
Communication Systems ◽  
Broad Band ◽  
Local Area ◽  
Dielectric Substrate ◽  
Slot Antenna ◽  
X Band ◽  
Universal Mobile Telecommunications System ◽  
Access Service ◽  
Code Division Multiple

In order to incorporate different communication standards into a single device, a compact quad-band slot antenna is proposed in this paper. The proposed antenna is composed of a dielectric substrate, T-shaped microstrip patch with a circle slot and an inverted L-slot, and a comb-shaped ground on the back of the substrate. By adopting these structures, it can produce four different bands, while maintaining a small size and a simple structure. Furthermore, a prototype of the quad-band antenna is designed and fabricated. The simulated and measured results show that the proposed antenna can operate over the 1.79–2.63 GHz, 3.46–3.97 GHz, 4.92–5.85 GHz, and 7.87–8.40 GHz, which can cover entire PCS (Personal Communications Service, 1.85–1.99 GHz), UMTS (Universal Mobile Telecommunications System, 1.92–2.17 GHz), WCDMA (wideband code-division multiple access, 2.1 GHz), Bluetooth (2.4–2.48 GHz), WiBro (Wireless Broad band access service, 2.3–3.39 GHz), WLAN (Wireless Local Area Networks, 2.4/5.2/5.8 GHz), WiMAX (Worldwide Interoperability for Microwave Access, 2.5/3.5/5.5 GHz), and X-band SATcom applications (7.9~8.4 GHz). The proposed antenna is particularly attractive for mobile devices integrating multiple communication systems.

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 Wideband Design of Circular Microstrip Patch Antenna using Rectangular Metal Sheet Superstrate for X-Band Applications

2020 ◽  
Vol 9 (7) ◽  
pp. 987-992
Keyword(s):  
Patch Antenna ◽  
Impedance Matching ◽  
Dielectric Substrate ◽  
Microstrip Patch Antenna ◽  
Metal Sheet ◽  
Impedance Bandwidth ◽  
Circular Patch ◽  
Microstrip Patch ◽  
X Band ◽  
Simple Change

A wideband circular microstrip patch antenna (CMPA) has been presented employing a rectangular metal sheet superstrate. The proposed concept follows a unique, simple, and a flexible design approach to enhance the bandwidth of a circular patch. A simple change in the conventional antenna geometry has been suggested by adding a rectangular metal sheet superstrate, placed symmetrically above the patch. A cylindrical shaped foam spacer has been used to provide mechanical support to the optimized superstrate. The proposed antenna offers about 36% of impedance matching bandwidth ranging between 8.46 GHz to 12.06 GHz with a total bandwidth of 3.6 GHz. Whereas, a conventional circular patch, resonating at 9.96 GHz, hardly shows about 4.8% of impedance bandwidth (480 MHz) only. In addition to the enhanced bandwidth characteristics, the proposed antenna, also reveals a little increase in the gain throughout the operating frequency band. For the experimental validation, a set of antenna prototype has been fabricated using the commercially available dielectric substrate. The measured result is very closely agreed with the simulated predictions.

Numerical Studies of X Band AbFSS Antenna Radome

2014 ◽  
Vol 1044-1045 ◽  
pp. 1209-1213
Author(s):  
Wei Wei Wu ◽  
Yang Zhou ◽  
Shao Yi Xie ◽  
Xi Chen ◽  
Nai Chang Yuan
Keyword(s):  
Design Procedure ◽  
Frequency Selective Surface ◽  
Dielectric Substrate ◽  
Hybrid Structure ◽  
Absorber Layer ◽  
Electromagnetic Structure ◽  
Microstrip Patch ◽  
Numerical Studies ◽  
X Band ◽  
K Band

In this paper, we describes a novel periodical electromagnetic structure. This hybrid structure consists of an absorber layer and a frequency selective surface (FSS) layer, so-called AbFSS structure. These two layers share one dielectric substrate. The absorber layer works at K band and the FSS layer performs at X band. The unit of this structure is numerically studied. A design procedure is developed after this study. Then an AbFSS antenna radome is modelled and applied to a 2x2 microstrip patch array. The characteristics of the array with and without this novel radome are researched. The characteristics include antenna gain and monostatic RCS. The comparisons of these characteristics of the array with and without the radome demonstrate that this radome is transparent at X band and absorptive at K band. This AbFSS structure can be easily achieved in Engineering and be a good candidate for the antenna radome.

A wideband metamaterial cross polarizer conversion for C and X band applications

Frequenz ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Prakash Ranjan ◽  
Chetan Barde ◽  
Arvind Choubey ◽  
Rashmi Sinha ◽  
Anubhav Jain ◽  
...  
Keyword(s):  
Printed Circuit Board ◽  
Electric Field Distribution ◽  
Metal Layer ◽  
Dielectric Substrate ◽  
Circuit Board ◽  
Polarization Conversion ◽  
Printed Circuit ◽  
X Band ◽  
Fabrication Tolerances ◽  
Meander Line

Abstract This article present wideband Metamaterial Cross Polarizer (MCP) structure for C and X band applications. The proposed structure consists of wheel shaped associated with meander line and triangular shaped patches having overall dimension of 18 × 18 mm. The anisotropic design patchis a single metallic layer (Cu) placed at the top of dielectric substrate FR-4 and backed by a ground also consists of metal layer (Cu). A wideband Polarization Conversion Ratio (PCR) above 0.8 magnitudes is achieved having bandwidth of 8.1 GHz ranging from 3.43 to 11.53 GHz and it works for C (4–8 GHz) and X (8–12 GHz) band approximately. The bandwidth of PCR at Full Width Half Maxima (FWHM) achieved is 8.24 GHz (3.60–11.84 GHz). Three distinct PCR peaks are observed at 4.2, 5.98, and 9.46 GHz with PCR magnitudes at 91.07, 96.39, and 99.76% respectively. Analysis of polarization conversion phenomena at these three frequencies is described with the help of current and electric field distribution. The proposed anisotropic structure is examined at different angles under normal and oblique incident. The simulation is performed through ANSYS HFSS (19.1), fabrication is done on substrate FR-4 using printed circuit board (PCB). The simulated and measured curves obtained for reflection coefficient and PCR are similar to one another with minute difference due to fabrication tolerances.

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