نتایج جستجو برای: dielectric loaded antenna

تعداد نتایج: 123722  

2015
Mohini Narendra Naik

In this paper, analyses and design of slotted Rectangular patch antenna for high speed wireless local area network at 5-6 GHz frequency has been done. A parametric study of the antenna has been carried out, to analyze and understand the effects of dimensional parameters. Main disadvantage of the microstrip patch antenna is its narrow bandwidth. However, in this paper slotting technique has been...

2013
Dharvendra P Yadav Pankaj K. Keshari

This paper presents the design of a small planar antenna with triangular patch for WiMax application. A conventional ground plane has been modified to reduce the size and increasing the bandwidth as well as to cover the WiMax band. The triangular‐shaped patch is placed on top of the substrate and parasitic patch is placed at other side. By inserting a triangular patch in the coplanar ground pla...

2010
Yuanfeng She Jiro Hirokawa Makoto Ando

A post-wall waveguide-fed parallel-plate slot array antenna [1–3] has been proposed as a highgain, high-efficiency and mass producible planar antenna in millimeter-wave applications. The authors are developing post-wall waveguide slot arrays using a copper-clad dielectric substrate which reduces the cost of waveguides structures by printed circuit board (PCB) fabrication technique. The transmis...

2010
RAKESH KUMAR

Patch antennas are one of the most attractive antennas for integrated RF front end systems due to their compatibility with microwave integrated circuits. To fulfill the demand of integrated RF front end systems, a design of microstrip patch antenna with optimum performance at 12 GHz is investigated. It is also investigated how the performance properties of a microstrip patch antenna are affecte...

2013
Rashmi Shukla Sunil Kumar Singh

A high gain conformal antenna is proposed having E-shaped patch to be used in SHF frequency range. A comprehensive parametric study has been carried out to understand the effects of various dielectric substrate effects and to optimize the performance of the antenna. For various substrate materials the effect of dielectric constant, loss tangent, mass density, bulk conductivity is observed .Resu...

2010
V K Manoharan S Sindhuja S Deepak Ram Prasath S Raju V Abhaikumar

Introduction Phase shifter (PS) in a phased array antenna shifts phase of incoming RF signal depending on control input, enabling antenna main beam to be steered at a faster rate without rotating antenna mechanically. Demand for high performance WLAN system at low cost has necessitated development of a miniaturized PS with reduced loss at low cost. Design and development of various types of PSs...

2011
Hussein Attia Leila Yousefi Omar Siddiqui Omar M. Ramahi

In this paper, the cavity model of a microstrip patch antenna in conjunction with the reciprocity theorem is used to develop a fast analytical solution for the radiation field of a microstrip patch antenna loaded with a novel artificial magnetic superstrate and to investigate the effect of the engineered superstrate layer on the directivity and radiation pattern of the printed patch antenna.

Journal: :IEEE Transactions on Antennas and Propagation 2021

This article presents a compact, cost-effective, and contactless fractal modified electromagnetic bandgap structure (EBG)-based microwave sensing platform for dielectric characterization of liquids by analyzing the variation in reflection coefficient an antenna. The reported design is composed triangular-shaped antenna ( 0.323? <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="ht...

2009
D. N. Elsheakh E. A. Abdallah M. F. Iskander H. Elhenawy

Abstract—In this paper, ultra-wideband and miniaturization, technique for the microstrip monopole patch antenna (MMPA) in wireless applications is presented. Ultra-wideband was achieved by using printed modified ground plane on a dielectric substrate with 50Ω microstrip feed line. This technique allows the bandwidth of the MMPA to be ultra-wideband with satisfactory radiation properties and red...

Journal: :Nano letters 2011
Tae Joon Seok Arash Jamshidi Myungki Kim Scott Dhuey Amit Lakhani Hyuck Choo Peter James Schuck Stefano Cabrini Adam M Schwartzberg Jeffrey Bokor Eli Yablonovitch Ming C Wu

Optical antennas have generated much interest in recent years due to their ability to focus optical energy beyond the diffraction limit, benefiting a broad range of applications such as sensitive photodetection, magnetic storage, and surface-enhanced Raman spectroscopy. To achieve the maximum field enhancement for an optical antenna, parameters such as the antenna dimensions, loading conditions...

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