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
Design of a Modified Wilkinson Power Divider with Size Reduction and Harmonics Suppression using Triangle-Shaped Resonators
TL;DR: A miniaturized microstrip Wilkinson power divider with harmonic elimination using low pass filter is proposed, which correctly works at 2 GHz and suppresses second to eighth harmonics with more than 20 dB attenuation level.
Proceedings ArticleDOI
Neuro modeling of microwave waveguides with EBG structures
TL;DR: In this article, two types of waveguides, the rectangular waveguide and the parallel plate waveguide, were modeled by neurocomputacional technique using ANN paradigm in modeling EBG structures.
Proceedings ArticleDOI
Mutual coupling reduction between array elements using 3D EBG
K. Praveen Kumar,S S G N Srinivasa Rao,S. Giridhar Abhishek,M. P. S. Gayathri,M. C. Sankalp,A. Vineeth +5 more
TL;DR: The band gap property is reveled using two techniques and the coefficient of mutual is determined by considering square shape microstrip patch antennas operating within band gap region are embedded with 3DEBG.
Journal ArticleDOI
Miniaturized bandstop filters using slotted-complementary resonators
TL;DR: It is found that high miniaturization factors can be achieved for the filters loaded with the proposed slotted complementary resonators in comparison to nonslotted resonators.
Proceedings ArticleDOI
Effect of number of uniform photonic bandgap (UPBG) elements on the performance of microstrip transmission lines
TL;DR: In this paper, the effect of number of UPBG elements on the s-parameter performances of a PBG engineered microstrip line has been investigated, and it can be seen that the stopband performance is highly sensitive to the number of up-down-down (UPBG) elements.
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.