Journal ArticleDOI
A uniplanar compact photonic-bandgap (UC-PBG) structure and its applications for microwave circuit
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TLDR
In this article, the photonic bandgap (PBG) structure for microwave integrated circuits is presented, which is a two-dimensional square lattice with each element consisting of a metal pad and four connecting branches.Abstract:
This paper presents a novel photonic bandgap (PBG) structure for microwave integrated circuits. This new PBG structure is a two-dimensional square lattice with each element consisting of a metal pad and four connecting branches. Experimental results of a microstrip on a substrate with the PEG ground plane displays a broad stopband, as predicted by finite-difference time-domain simulations. Due to the slow-wave effect generated by this unique structure, the period of the PBG lattice is only 0.1/spl lambda//sub 0/ at the cutoff frequency, resulting in the most compact PEG lattice ever achieved. In the passband, the measured slow-wave factor (/spl beta//k/sub 0/) is 1.2-2.4 times higher and insertion loss is at the same level compared to a conventional 50-/spl Omega/ line. This uniplanar compact PBG (UC-PBG) structure can be built using standard planar fabrication techniques without any modification. Several application examples have also been demonstrated, including a nonleaky conductor-backed coplanar waveguide and a compact spurious-free bandpass filter. This UC-PBG structure should find wide applications for high-performance and compact circuit components in microwave and millimeter-wave integrated circuits.read more
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Journal ArticleDOI
New periodic-loaded electromagnetic bandgap coplanar waveguide with complete spurious passband suppression
Ferran Martin,Francisco Falcone,Jordi Bonache,Txema Lopetegi,Miguel A. G. Laso,Mario Sorolla +5 more
TL;DR: In this paper, it was shown that the multiple spurious passbands above the Bragg frequency can be completely and efficiently rejected by means of geometry perturbation, in contrast to previous works, where the rejection of multiple frequencies requires complex layout patterns and reveals that the elimination of spurious frequency bands in periodic loaded coplanar waveguides cannot be merely estimated from the Fourier transform of the perturbations geometry.
Proceedings ArticleDOI
Miniaturized reconfigurable and switchable filter from UWB to 2.4 GHz WLAN using PIN diodes
TL;DR: In this article, a reconfigurable and switchable bandstop filter from UWB to 2.4 GHz WLAN was developed by using pin diodes, which consists of two bended open stubs of quarter-wavelength and a connecting stub of halfwavelength.
Journal ArticleDOI
Surface-wave suppression band gap and plane-wave reflection phase band of mushroomlike photonic band gap structures
TL;DR: In this paper, the relationship between the surface-wave suppression band gap and the plane-wave reflection phase band was investigated and clarified by a finite-element full-wave analysis.
Journal ArticleDOI
Application of a Compact Electromagnetic Bandgap Array in a Phone Case for Suppression of Mobile Phone Radiation Exposure
Rupam Das,Hyoungsuk Yoo +1 more
TL;DR: It is found that placing an EBG structure in a phone case can improve antenna gain and reduce SAR, and a maximum gain increment and an SAR reduction of 24% were found.
Journal ArticleDOI
Genetically engineered multiband high-impedance frequency selective surfaces
TL;DR: In this paper, a methodology for the design synthesis of meta-materials that act as thin multifrequency artificial magnetic conductors is presented, which is realized by placing a frequency-selective surface above a conventional prefect electric conductor, separated by a thin dielectric layer.
References
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Proceedings Article
Photonic crystals
Igor S. Nefedov,M. Marciniak +1 more
TL;DR: In this paper, the authors describe photonic crystals as the analogy between electron waves in crystals and the light waves in artificial periodic dielectric structures, and the interest in periodic structures has been stimulated by the fast development of semiconductor technology that now allows the fabrication of artificial structures, whose period is comparable with the wavelength of light in the visible and infrared ranges.
Book
Microstrip Lines and Slotlines
TL;DR: In this article, the authors present a quasi-static analysis of an Enclosed Microstrip and a Slot-Coupled Microstrip Line, as well as a fullwave analysis of Discontinuity Inductance Evaluation.
Journal ArticleDOI
Photonic band-gap structures
TL;DR: In this article, the photonic band gap structures, those three-dimensional periodic dielectric structures that are to photon waves as semiconductor crystals are to electron waves, are discussed.
Journal ArticleDOI
Coplanar Waveguide, a Surface Strip Transmission Line Suitable for Nonreciprocal Gyromagnetic Device Applications
TL;DR: In this article, the coplanar waveguide is used for non-reciprocal magnetic device applications because of the built-in circularly polarized magnetic vector at the air-dielectric boundary between the conductors.