Journal ArticleDOI
A uniplanar compact photonic-bandgap (UC-PBG) structure and its applications for microwave circuit
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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:Â
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
Liquid-Metal-Based Reconfigurable Components for RF Front Ends
TL;DR: In June 2013, the White House identified the development of broadband wireless networks as crucial for economic growth, specifically identifying innovations in spectrum sharing as being the key to relieving an expected spectrum crunch caused by the rapidly increasing number of Internet-connected devices, currently estimated at over 500 million as discussed by the authors.
Journal ArticleDOI
Dual-Band Uniplanar CPW-Fed Monopole/EBG Combination With Bandwidth Enhancement
M. E. de Cos,Fernando Las-Heras +1 more
TL;DR: In this article, a low-profile uniplanar dual band coplanar waveguide (CPW)-fed monopole antenna/electromagnetic band gap (EBG) combination, exhibiting bandwidth enhancement, is presented.
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Sierpinski Space-Filling Curves and Their Application in High-Speed Circuits for Ultrawideband SSN Suppression
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A Radio Frequency Non-reciprocal Network Based on Switched Acoustic Delay Lines
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Proceedings ArticleDOI
A technique for reducing the size of amplifiers using defected ground structure
TL;DR: In this paper, a defected ground structure (DGS) on the ground plane of transmission lines, such as microstrips and coplanar waveguides, provides slow-wave characteristics caused by its equivalent inductive and capacitive components.
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.