By Topic

Microwave Symposium (MMS), 2010 Mediterranean

Date 25-27 Aug. 2010

Filter Results

Displaying Results 1 - 25 of 91
  • [Front cover]

    Publication Year: 2010, Page(s): c1
    Request permission for commercial reuse | PDF file iconPDF (230 KB)
    Freely Available from IEEE
  • [Copyright notice]

    Publication Year: 2010, Page(s): ii
    Request permission for commercial reuse | PDF file iconPDF (86 KB)
    Freely Available from IEEE
  • Committees

    Publication Year: 2010, Page(s): iii
    Request permission for commercial reuse | PDF file iconPDF (566 KB)
    Freely Available from IEEE
  • Table of contents

    Publication Year: 2010, Page(s):1 - 7
    Request permission for commercial reuse | PDF file iconPDF (98 KB)
    Freely Available from IEEE
  • Propagation of microwaves in periodic layered media

    Publication Year: 2010, Page(s):4 - 7
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1411 KB) | HTML iconHTML

    We introduce a simplified structure made of periodic metallic layers on a glass substrate that offer a potentially simpler approach in building photonic crystals. Using microwave experiments and Fresnel formulas, we have investigated the refractive index properties of these structures. We have measured experimentally both the transmittance and the reflectance properties and found unambiguously tha... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Slow light propagation in stacked complementary metasurfaces at microwave frequencies

    Publication Year: 2010, Page(s): 9
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (905 KB) | HTML iconHTML

    In this work, a metamaterial structure consisting of alternative layers of split-ring-resonators and complementary-splitring-resonators is studied numerically and experimentally. It is found that a delay of almost 3 orders of magnitude with respect to free-space of a microwave beam through this metamaterial structure can be achieved at th e first two transmission bands. The study is developed for ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • New closed-form Green's functions for microstrip structures based on Ge-Esselle's method

    Publication Year: 2010, Page(s):10 - 13
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1561 KB) | HTML iconHTML

    In this paper, the new closed-form Green's function method is used to calculate the microstrip Green's functions. In the improved method, the surface-wave poles are first extracted using a recursive contour integration method. Then, the remainder is approximated by a series of complex exponentials using the Prony's method or the GPOF along the extended rooftop shaped path in kρ-p... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Two-way split-step parabolic equation algorithm for tropospheric propagation: Tests and comparisons

    Publication Year: 2010, Page(s):14 - 17
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5814 KB) | HTML iconHTML

    This paper introduces a two-way split-step parabolic equation propagation tool (2W-SSPE), which is capable of handling both forward and backward scattered waves during groundwave propagation over an irregular terrain, through inhomogeneous atmosphere. The algorithm is calibrated and tested against reference data obtained with the help of image method and the Geometric Optic (GO) + Uniform Theory o... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A 35 GHz coplanar waveguide power divider

    Publication Year: 2010, Page(s):22 - 24
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1430 KB) | HTML iconHTML

    This text presents the design and measurement of a power divider topology implemented using coplanar waveguides by micromachining technology. The power divider is a three port structure. For simple three port power divider structures significant modifications are needed for changing power division ratio. For the proposed one in this paper the ratio can be adjusted by changing only the lengths of s... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Optimum design of a modified 3-way Bagley rectangular power divider

    Publication Year: 2010, Page(s):25 - 28
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (267 KB) | HTML iconHTML

    A novel 3-way rectangular power divider is proposed which is a modified version of the Bagley power divider. The method of least squares is developed for its design and optimization, which determines the line section lengths and widths. The design specifications are made on the desired values of scattering parameters, which tend to minimize the input reflection coefficient and realize the desired ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Comparing miniaturization techniques for microstrip 180° hybrid ring junctions

    Publication Year: 2010, Page(s):29 - 32
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (535 KB) | HTML iconHTML

    Several miniaturization approaches are applied to microstrip 180° hybrid ring junctions designed for a frequency of operation of 2 GHz. These ring junctions are compared in terms of occupied area on the circuit board, frequency bandwidth and power loss. The miniaturization techniques include open stubs added, lumped-element capacitive shunt loading, stepped-impedance slow-wave lines and ser... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of a two layer aperture-coupled unequal power divider

    Publication Year: 2010, Page(s):33 - 35
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1270 KB) | HTML iconHTML

    A four-port, aperture-coupled, unequal power divider is presented. The power ratio modification is fulfilled by the utilization of the defected ground structure (DGS). Effects of the changing defect length on the power distribution are presented. The power efficiency examination is also carried out. The simulation results show that at 10 GHz, the proposed device can supply varying port powers with... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Wideband phase shifter design using Lange coupler and radial stubs

    Publication Year: 2010, Page(s):36 - 39
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1369 KB) | HTML iconHTML

    In this study, four wideband phase shifter circuits are designed and simulated for 6-18 GHz frequency range. Phase shifters are separately designed in order to get 11.25°, 22.5°, 45° and 90° phase shifts with minimum phase error and low return losses. Thin film production technique will be used to fabricate individual phase shifter circuits. Designs and EM simulations a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • S-band hybrid 4 bit phase shifter

    Publication Year: 2010, Page(s):40 - 43
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1677 KB) | HTML iconHTML

    S-band hybrid 4 bit phase shifter of 22.5° phase resolution is designed, simulated, fabricated and measured. Bits are separately designed to maintain low phase errors and return loss. In this manner, fabrication and measurements are performed for each bit. These measurements are carried on since each bit reached to its acceptable level of operation. According to the outcomes and acquired kn... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Single stub tuning application via semi-rigid coaxial cables for VHF and UHF monopole antennas on RASAT

    Publication Year: 2010, Page(s):44 - 47
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1413 KB) | HTML iconHTML

    For maximum power transfer impedance matching is an important subject in communication systems. Besides, minimum complexity is another important concept in order to obtain cheaper, reliable and feasible matching networks. In this study, a single stub matching implementation applied while improving the return loss characteristic of blade antennas used in VHF/UHF communication system of RASAT is pre... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A small quarter wavelength microstrip antenna for HF and VHF band applications

    Publication Year: 2010, Page(s):48 - 51
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1475 KB) | HTML iconHTML

    This paper presents a small quarter wavelength microstrip antenna for HF and VHF band applications. The designed antenna is based on a quarter wavelength microstrip antenna whose the patch size is the same as the ground plane. The antenna is miniaturized by inserting four zigzag plates at the end of the microtrip antenna. The size of the miniaturized antenna is 60 × 60 × 30 cm3<... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A compact, symmetric branched chain monopole for dual wide band operation

    Publication Year: 2010, Page(s):56 - 59
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1486 KB) | HTML iconHTML

    A novel design of a dual wide band branched chain monopole is presented and discussed. The antenna has a unique design consisting of a U shape with a center strip fed by a 50Ω microstrip line with the integration of branched chains in the appropriate places to achieve dual band operation. The antenna is low profile and has overall dimensions 42mm × 40mm, which is compact in size for ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Broadband antenna for GSM, UMTS and LTE Wi-Max applications

    Publication Year: 2010, Page(s):60 - 61
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (146 KB) | HTML iconHTML

    This paper la y outs the proposed novel broadband suspended plate antenna folded patch feed. It is appropriate for distinctive applications which include GSM, U MTS, WLAN and LTE Wi-Max technologies. Simulations are performed using a EM software package HFSS. From the simulations of the proposed antenna, impedance bandwidth of 65. 6 % obtained between the frequencies of 1.71 GHz and 3.38 GHz. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dual-band loop-loaded printed dipole array

    Publication Year: 2010, Page(s):62 - 64
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1400 KB) | HTML iconHTML

    A loop-loaded printed dipole (LLPD) array is introduced for a dual-band operation at 3.0/5.5 GHz bands. Loop elements placed on the dipole aperture provide a dual-band operation without deteriorating gain and pattern characteristics. In addition, a new balun-feed configuration with a tapered microstrip transition backed by a triangular ground plane is also introduced to eliminate the inherent unba... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An exact time domain evaluation for radiated fields from a Hertz dipole

    Publication Year: 2010, Page(s):70 - 72
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (319 KB) | HTML iconHTML

    This paper provides an exact derivation of the radiated fields of a Hertz dipole in time domain. The usual derivation of the frequency domain dipole fields involves neglecting the phase variation across the dipole and hence, it is not exact. The time domain derivations presented here do not involve any approximations. The relations between time domain and frequency domain fields of an infinitesima... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Study on circular planar antenna

    Publication Year: 2010, Page(s):73 - 76
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1321 KB) | HTML iconHTML

    In this paper, the microstrip antenna consist of a planar resonant radiating element parallel to, but separated, from a ground plane by a thin dielectric substrate (t <;<;λ) was designed and simulated on EM software. This antenna is fabricated on RT Duroid substrate of dielectric 2.2, thickness 0.8 mm. This antenna was feed by microstrip transformer. Linearly polarized circular shape ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analysis of the relation between printed strip monopole and dielectric coated thin cylindrical monopole

    Publication Year: 2010, Page(s):77 - 80
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1345 KB) | HTML iconHTML

    Recently, printed type antennas are used widely in communication systems since they are low cost and produced easily. Firstly Hallen exposed the relation between thin cylindrical and strip monopole. Then this equivalent radius concept was applied to printed monopole antenna. In this paper relation between printed strip monopole and dielectric coated thin cylindrical monopole has been analyzed anal... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Effect of Photonic Band Gap structure on Planar Antenna configuration

    Publication Year: 2010, Page(s):81 - 85
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1243 KB) | HTML iconHTML

    This paper describes the effect of Photonic Band Gap (PBG) structure as ground plane coupled with defected ground plane on Planar Antenna using coplanar waveguide with improvement of bandwidth and return loss value of 50% (in case of array of 3 × 5 UC-PBG) and 6.45 dB at resonant frequency of 3.6 GHz and is used for WIMax band (3.3 GHz to 3.8GHz) for Wireless Local Area Network (WLAN) appli... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A review of Software Defined Radio enabling technologies

    Publication Year: 2010, Page(s):87 - 90
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1292 KB) | HTML iconHTML

    This paper reviews the state-of-the-art in microwave technology by investigating the most important elements of transceivers. It identifies the enabling technologies and research areas in radio frequency engineering that may facilitate the development of Software Defined Radios. Receiver architectures are also discussed and their viability for a reconfigurable radio application is investigated. Th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Configurable microwave structures for software defined (and cognitive) radio front ends

    Publication Year: 2010, Page(s):91 - 97
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1734 KB) | HTML iconHTML

    Both Software Defined Radio and Cognitive Radio require a flexible transceiver front end. This paper introduces solutions to two important features of such a device; the antenna and the filter. These are both microwave resonant structures and so share design trade-offs and restrictions; in this application they must both offer some degree of tunability or wideband performance. MEMS technology is p... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.