Journal ArticleDOI
Nonradiating edges and four edges gap-coupled multiple resonator broad-band microstrip antennas
Girish Kumar,K. C. Gupta +1 more
Reads0
Chats0
TLDR
In this article, two novel configurations for increasing the impedance bandwidth of the microstrip patch antennas are described, one of which uses two additional resonators which are gap-coupled to the nonradiating edges of a rectangular patch, whereas in the second case, four extra resonators are gap coupled to the four edges of the rectangular patch.Abstract:
Two novel configurations for increasing the impedance bandwidth of the microstrip patch antennas are described. One of these configurations uses two additional resonators which are gap-coupled to the nonradiating edges of a rectangular patch, whereas in the second case, four additional resonators are gap-coupled to the four edges of a rectangular patch. Green's function approach and segmentation method are used for analysis. The experimental results are in reasonable agreement with analysis and impedance bandwidths of 480 MHz and 815 MHz are obtained for the three resonators and five resonators configurations, respectively (in S -band with substrate \epsilon_{r} = 2.55 and thickness = 0.318 cm).read more
Citations
More filters
Journal ArticleDOI
Wideband Microstrip Patch Antenna With U-Shaped Parasitic Elements
TL;DR: In this article, a wideband U-shaped parasitic patch antenna is proposed, in which two parasitic elements are incorporated into the radiating edges of a rectangular patch whose length and width are lambdag/2 and lambding/4, respectively, in order to achieve wide bandwidth with relatively small size.
Patent
Space-filling miniature antennas
TL;DR: In this paper, the Space-Filling Curves (SFC) geometry is used to shape a part of an antenna and the antenna can operate at a lower frequency with respect to a conventional antenna of the same size.
Journal ArticleDOI
Directly coupled multiple resonator wide-band microstrip antennas
Girish Kumar,K. C. Gupta +1 more
TL;DR: In this article, three new configurations for increasing the impedance bandwidth of the microstrip patch antennas are described, where additional resonators are directly coupled through short sections of microstrip line to the radiating edges, nonradiating edges, and all the four edges of the rectangular patch antennas, respectively.
Patent
Microstrip patch antenna
TL;DR: In this paper, an integrated directional patch antenna using multiple patch radiating elements to control the direction of a beam of radio frequency energy (RF) over a large scan volume was proposed.
Journal ArticleDOI
Implementation of Broadband Isolator Using Metamaterial-Inspired Resonators and a T-Shaped Branch for MIMO Antennas
TL;DR: In this article, the authors developed a novel MIMO antenna with excellent broadband isolation performance in this communication, where a T-shaped branch behind the insulators markedly improves the isolation bandwidth.
References
More filters
Journal ArticleDOI
Theory and experiment on microstrip antennas
Y.T. Lo,D. Solomon,W. Richards +2 more
TL;DR: In this article, a simple theory based on the cavity model was developed to analyze microstrip antennas, and the theoretically predicted radiation patterns and impedance loci closely agree with those measured for many antennas of various shapes and dimensions investigated thus far.
Journal ArticleDOI
Analysis and optimized design of single feed circularly polarized microstrip antennas
P. Sharma,K. C. Gupta +1 more
TL;DR: In this article, three types of single-feed circularly polarized microstrip antennas, namely, a diagonal fed nearly square, a truncated-corners square and a square with a diagonal slot, are presented.
Journal ArticleDOI
Broad-band microstrip antennas using additional resonators gap-coupled to the radiating edges
Girish Kumar,K. C. Gupta +1 more
TL;DR: In this paper, a method for increasing the bandwidth of microstrip patch antennas by incorporating two additional resonators which are gap-coupled to the radiating edges of a rectangular patch is described.
Improved bandwidth of microstrip antennas using parasitic elements
TL;DR: In this paper, a method for doubling the bandwidth of rectangular microstrip patch antennas by locating capacitively excited λ m ��/4 short circuit parasitic elements at their radiating edges is described.
Journal ArticleDOI
Segmentation Method Using Impedance Matrices For Analysis Of Planar Microwave Circuits
R. Chadha,K.C. Gupta +1 more
TL;DR: In this paper, the analysis of two-dimensional microwave planar circuits is modified by using Z-matrices for the individual planar segments, which is shown to be computationally more efficient.