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
Citations
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Journal ArticleDOI
Reconfigurable defected ground structure cell using PIN diodes on Coplanar Waveguide technology
Heba B. El-Shaarawy,Heba B. El-Shaarawy,Heba B. El-Shaarawy,Fabio Coccetti,Robert Plana,Robert Plana,Mostafa El-Said,Essam A. Hashish +7 more
TL;DR: In this article, a reconfigurable defected ground structure resonator fabricated on Coplanar Waveguide (CPW) technology is presented, which enables the generation of multiple transmission zeros at arbitrary frequencies.
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Beauty in MYJ coupled-resonator filter design approach of infinite solution space
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High directive antenna using quasi-periodic planar metamaterial substrates
TL;DR: In this paper, a metamaterial substrate consisting of a quasi-periodic metallic planar pattern and a flat metal sheet, interconnected through metallic vias, has been studied and it has been shown that this structure possesses multiple in-phase reflection frequency regimes and spectral gaps for transverse-magnetic surface waves, whereas the transverse electric surface waves are suppressed in all frequencies.
Journal ArticleDOI
Design of Size-reduced Ring Hybrid Couplers Using a Common Defected Ground Structure
TL;DR: In this paper, a size-reduced ring hybrid couplers (RHC) using a common defected ground structure (CDGS) was proposed, which consists of double-sided microstrip lines and the CDGS patterns which are placed in the common ground plane of the double-side microstrip line.
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MSRR metamaterial-based antenna system for MIMO applications
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References
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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
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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.
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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.