Now showing items 141-148 of 148
Abstract: | A compact ultra-wideband (UWB) printed slot antenna is described, suitable for integration with the printed circuit board (PCB) of a wireless, universal, serial-bus dongle. The design comprises of a near-rectangular slot fed by a coplanar waveguide (CPW) printed on a PCB of size 20 × 30 mm2. It has a large bandwidth covering the 3.1–10.6 GHz UWB band, with omnidirectional radiation patterns. Further, a notched band centered at 5.45 GHz wireless local area network bands is obtained within the wide bandwidth by inserting a narrow slot inside the tuning stub. Details of the antenna design are described, and the experimental results of the constructed prototype are presented. The time domain studies on the antenna shows a linear phase response throughout the band except at the notched frequency. The transient analysis of the antenna indicates very little pulse distortion confirming its suitability for high speed wireless connectivity. |
URI: | http://dyuthi.cusat.ac.in/purl/2719 |
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Dyuthi-P00354.pdf | (401.1Kb) |
Abstract: | In this paper, we introduce a novel feeding technique for bandwidth enhancement of a rectangular microstrip antenna This antenna offers an impedance bandwidth of 22% without degrading the effciencv. The effect of the feed parameters upon patch characteristics such as resonant frequency, impedance bandwidth, and radiation pattern are studied in detail. The experimental results are verified using the FDTD results |
URI: | http://dyuthi.cusat.ac.in/purl/1415 |
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Wideband micros ... using hook-shaped feed.PDF | (1.285Mb) |
Abstract: | A broadband cylindrical dielectric resonator antenna (DRA) energized with an L-strip feed is presented The novel exciting technique achieves a 2:1 VSWR bandwidth of 18%. The variation of bandwidth for different feed parameters is also studied |
URI: | http://dyuthi.cusat.ac.in/purl/1414 |
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Wideband oylind ... using an L-strip feed.PDF | (467.5Kb) |
Abstract: | The design and development of an L-band printed dipole antenna. optimized for wide-band applications near first resonance, is reported. This design has achieved more than 48% impedance bandwidth (VSWR 2:1), without degrading its overall radiation efficiency |
URI: | http://dyuthi.cusat.ac.in/purl/1363 |
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WIDE-BAND PRINTED DIPOLE ANTENNA.PDF | (1.256Mb) |
Abstract: | A simple electromagnetically coupled wideband printed microstrip antenna having a 2:1 VSWR bandwidth of 38% covering the 5.2/5.8-GHz WLAN, HIPERLAN2, and HiSWANa communication bands is presented. The large bandwidth is obtained by adding a rectangular metal strip on a slotted square microstrip antenna. The antenna occupies an overall dimension of 42 times 55 times 3.2 mm3 when printed on a substrate of dielectric constant 4. It exhibits good radiation characteristics and moderate gain in the entire operating band. Details of the design along with experimental and simulation results are presented and discussed. |
URI: | http://dyuthi.cusat.ac.in/purl/2717 |
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Dyuthi-P00355.pdf | (587.6Kb) |
Abstract: | A planar monopole antenna suitable for broadband wireless communication is designed and developed. With the use of a truncated ground plane, the proposed printed monopole antenna offers nearly 60% 2:1 VSWR bandwidth and good radiation characteristics for the frequencies across the operating band. A parametric study of the antenna is performed based on the optimized design, and a prototype of the antenna suitable for 2.4-GHz WLAN application is presented. The antenna can be easily integrated into wireless circuitry and is convenient for application in laptop computers. |
URI: | http://dyuthi.cusat.ac.in/purl/2965 |
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Dyuthi-P00410.pdf | (132.7Kb) |
Abstract: | An electromagnetically coupled T-shaped microstrip feed used to enhance the impedance bandwidth of a rectangular microstrip antenna is reported. The proposed antenna offers a 2:1 VSWR bandwidth of -36% with an increase in gain of 0.8 dB |
URI: | http://dyuthi.cusat.ac.in/purl/1400 |
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A wideband rect ... ymmetric t-shaped feed.PDF | (804.7Kb) |
Abstract: | A trapezoidal strip grating surface that eliminates specular reflections almost over the entire X -band frequency range for TM polarization is reported This new grating structure overcomes the bandwidth limitation of conventional rectangular strip grating surfaces |
URI: | http://dyuthi.cusat.ac.in/purl/1348 |
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Wideband trapez ... of specular reflection.PDF | (808.9Kb) |
Now showing items 141-148 of 148
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