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
Numerical analysis of conformal uc-pbg structures
TL;DR: In this paper, the performance of conventional Uniplanar Compact Photonic Band Gap (UC-PBG) structures is investigated under difierent bending extents, where the structure is operated as an Artiflcial Magnetic Conductor (AMC) in which performance is mainly characterized by its resonant frequency and bandwidth.
Miniaturized extended-stopband microstrip ring resonator bandpass filter using uniplanar compact photonic bandgap (UC-PBG) structures
TL;DR: In this paper, a modified bandpass ring resonator filter is proposed to provide compact size, low insertion-loss, wide bandwidth, sharp rejection and suppressed higher order modes, with the use of internal folded stubs.
Journal ArticleDOI
Design of Microstrip Quasi-Elliptic Bandpass Filter with Upper Wide Stopband Using Quarter-Wavelength Stepped-Impedance Resonators
TL;DR: In this article, a miniaturized quasi-elliptic bandpass filter using four quarter-wavelength (λ/4) stepped-impedance resonators is presented with a simple design method.
Proceedings ArticleDOI
Design and Analysis of Novel EBG/AMC Unit Cell
TL;DR: A novel uniplanar EBG unit cell has been designed which can also act as an AMC and the reflection phase is zero degree indicating it behaves analogous to an AMC structure.
Journal Article
Comparison of UWB Band pass filter and EBGembedded UWB Band pass filter
TL;DR: The focus is on the compactness and performance of the filter design which will be compared with conventional wideband filter and the EBG structure is investigated and applied to UWB BPFs.
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.