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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Proceedings ArticleDOI
Wideband, compact microstrip band stop filter for triband operations
TL;DR: In this paper, a 3-in-1 filter with a spurline filter at the output connected with a section of anti-coupled lines has been proposed to shift the frequency at the desired location by optimizing the line lengths.
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Super-compact left-handed resonator for filter applications
TL;DR: In this article, a super-compact left-handed resonator based on a grounded double spiral end-coupled to the host microstrip line is presented, which shows lower insertion loss at resonant frequency and higher Q-factor in comparison with previously reported LH resonators.
Proceedings ArticleDOI
A high rejection low pass filter serve photonic bandgap (PBG) design
Jwo-Shiun Sun,Guan-Yu Chen +1 more
TL;DR: In this article, the authors proposed a wideband PBG microstrip line with defect tapered ground surface consisting of lowpass, bandstop and leaky wave characteristics, respectively, and simulated results with full wave electromagnetic analyses are in good agreement with those experimental data and the optimal structure of PBG bringing about the perturbation electromagnetic waves will be determined.
Proceedings ArticleDOI
A Novel Compact Uni-planar Electromagnetic Band-gap (UC-EBG) Structure
TL;DR: In this paper, a novel uni-planar electromagnetic band gap (EBG) structure incorporated with spiral shape capacitor and meandered line inductor (SC-ML-EBG), is presented.
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.