Abstract: | A new dual port microstrip antenna geometry for dual frequency operation is presented. The structure consists of the intersection of two circles of the same radius with their centres displaced by a small fraction of the wavelength . This antenna provides wide impedance bandwidth and excellent isolation between its ports. The gain of the antenna is comparable to that of a standard circular microstrip antenna operating at the same resonant frequency. A theoretical analysis for calculating the resonant frequencies of the two ports is also presented |
URI: | http://dyuthi.cusat.ac.in/purl/1350 |
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Broadband dual frequency microstrip antennas.PDF | (838.1Kb) |
Broadband dual frequency microstrip antennas.PDF | (838.1Kb) |
Abstract: | A new dual port microstrip antenna geometry for dual frequency operation is presented. The structure consists of the intersection of two circles of the same radius with their centres displaced by a small fraction of the wavelength . This antenna provides wide impedance bandwidth and excellent isolation between its ports. The gain of the antenna is comparable to that of a standard circular microstrip antenna operating at the same resonant frequency. A theoretical analysis for calculating the resonant frequencies of the two ports is also presented |
URI: | http://dyuthi.cusat.ac.in/purl/1580 |
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Broadband dual frequency microstrip antennas.PDF | (838.1Kb) |
Abstract: | A new dual port microstrip antenna geometry for dual frequency operation is presented. The structure consists of the intersection of two circles of the same radius with their centres displaced by a small fraction of the wavelength . This antenna provides wide impedance bandwidth and excellent isolation between its ports. The gain of the antenna is comparable to that of a standard circular microstrip antenna operating at the same resonant frequency. A theoretical analysis for calculating the resonant frequencies of the two ports is also presented |
URI: | http://dyuthi.cusat.ac.in/purl/1581 |
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Dyuthi-P00410.pdf | (365.7Kb) |
Abstract: | A new dual port microstrip antenna geometry for dual frequency operation is presented. The structure consists of the intersection of two circles of the same radius with their centres displaced by a small fraction of the wavelength . This antenna provides wide impedance bandwidth and excellent isolation between its ports. The gain of the antenna is comparable to that of a standard circular microstrip antenna operating at the same resonant frequency. A theoretical analysis for calculating the resonant frequencies of the two ports is also presented |
URI: | http://dyuthi.cusat.ac.in/purl/1582 |
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Broadband dual frequency microstrip antennas.PDF | (838.1Kb) |
Abstract: | A microstrip antenna with large bandwidth is developed using a parasitic technique. Compared to the available wide-band antenaas, the proposed antenna structure Is very compact and gives a less distorted radiation pattern with frequency . An impedance bandwidth, eight times that of a conventional patch antenna of the same size, Is achieved. The concept of coupled microstrip line model is extended for theoretical interpretation of the impedance loci |
URI: | http://dyuthi.cusat.ac.in/purl/1564 |
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Broad-Band Gap Coupled Microstrip Antenna.PDF | (2.586Mb) |
Abstract: | A microstrip antenna with large bandwidth is developed using a parasitic technique. Compared to the available wide-band antenaas, the proposed antenna structure Is very compact and gives a less distorted radiation pattern with frequency . An impedance bandwidth, eight times that of a conventional patch antenna of the same size, Is achieved. The concept of coupled microstrip line model is extended for theoretical interpretation of the impedance Loci |
URI: | http://dyuthi.cusat.ac.in/purl/1566 |
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Broad-Band Gap Coupled Microstrip Antenna.PDF | (2.586Mb) |
Abstract: | A microstrip antenna with large bandwidth is developed using a parasitic technique. Compared to the available wide-band antenaas, the proposed antenna structure Is very compact and gives a less distorted radiation pattern with frequency . An impedance bandwidth, eight times that of a conventional patch antenna of the same size, Is achieved. The concept of coupled microstrip line model is extended for theoretical interpretation of the impedance Loci |
URI: | http://dyuthi.cusat.ac.in/purl/1565 |
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Broad-Band Gap Coupled Microstrip Antenna.PDF | (2.586Mb) |
Abstract: | A microstrip antenna with large bandwidth is developed using a parasitic technique . Compared to the available wide-baud antennas,the proposed antenna structure is very compact and gives a lessdistorted radiation pattern with frequency . An impedance bandwidth,eight times that of a conventional patch antenna of the same size, Isachieved. The concept of coupled microstrip line model Is extended fortheoretical interpretation of the impedance loci |
URI: | http://dyuthi.cusat.ac.in/purl/1360 |
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Broad-Band Gap Coupled Microstrip Antenna.PDF | (2.586Mb) |
Abstract: | The detection of buried objects using time-domain freespace measurements was carried out in the near field. The location of a hidden object was determined from an analysis of the reflected signal. This method can be extended to detect any number of objects. Measurements were carried out in the X- and Ku-bands using ordinary rectangular pyramidal horn antennas of gain 15 dB. The same antenna was used as the transmitter and recei er. The experimental results were compared with simulated results by applying the two-dimensional finite-difference time-domain(FDTD)method, and agree well with each other. The dispersi e nature of the dielectric medium was considered for the simulation. |
URI: | http://dyuthi.cusat.ac.in/purl/2983 |
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Dyuthi-P00419.pdf | (131.7Kb) |
URI: | http://dyuthi.cusat.ac.in/purl/1583 |
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Circularly pola ... act microstrip antenna.PDF | (1.230Mb) |
URI: | http://dyuthi.cusat.ac.in/purl/1585 |
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Circularly pola ... act microstrip antenna.PDF | (1.230Mb) |
URI: | http://dyuthi.cusat.ac.in/purl/1584 |
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Circularly pola ... act microstrip antenna.PDF | (1.230Mb) |
Abstract: | Design and development of a circularly polarized and matched H-plane sectorial horn antenna have been reported By proper trimming of the flange parameters any desired polarization can be obtained from the horn |
URI: | http://dyuthi.cusat.ac.in/jspui/handle/dyuthi/1550 |
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A circularly po ... s design & develpoment.PDF | (822.3Kb) |
Abstract: | Design and development of a circularly polarized and matched H-plane sectorial horn antenna have been reported By proper trimming of the flange parameters any desired polarization can be obtained from the horn |
URI: | http://dyuthi.cusat.ac.in/jspui/handle/dyuthi/1552 |
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A circularly po ... s design & develpoment.PDF | (822.3Kb) |
Abstract: | Design and development of a circularly polarized and matched H-plane sectorial horn antenna have been reported By proper trimming of the flange parameters any desired polarization can be obtained from the horn |
URI: | http://dyuthi.cusat.ac.in/jspui/handle/dyuthi/1551 |
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A circularly po ... s design & develpoment.PDF | (822.3Kb) |
Abstract: | Design of a dual-port circular patch antenna with a sector-slot for dual-frequency operation is presented. The antenna resonates at two distinct frequencies with orthogonal polarizations and broad radiation characteristics. Unlike the conventional circular patch, this antenna can be microstrip-fed to operate at either of the resonances. The two polarizations can be simultaneously excited using two electromagnetically coupled ports with an isolation better than −30 dB between the ports. This antenna has the added advantage of size reduction of 44% compared to the conventional circular patch without any reduction in gain. |
URI: | http://dyuthi.cusat.ac.in/purl/2728 |
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Dyuthi-P00365.pdf | (124.9Kb) |
Abstract: | compact microstrip antenna integrated with an amplifier having an area reduction of 70%, compared to the standard circular microstrip patch antenna, is presented. The antenna also provides an enhanced gain of 10-dB more than its passive counter part. The measured 2:1 VSWR band width is -4% at 790 MHz, which is 2.5 times larger than that of the passive microstrip antenna |
URI: | http://dyuthi.cusat.ac.in/purl/1402 |
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Compact amplifi ... ted microstrip antenna.PDF | (933.7Kb) |
Abstract: | An asymmetric coplanar strip-fed uniplanar antenna for wideband applications is presented. The resulting antenna offers a 2:1 VSWR bandwidth greater than 100% from 1.58 to 5.48 GHz covering the DCS/PCS/IEEE 802.11a/WiMAX bands. The antenna has an overall dimension of 44 × 35 mm2 when printed on a substrate of dielectric constant 4.4 and height 1.6 mm. The design equation is also presented in this article. The antenna exhibits good radiation characteristics and moderate gain in the entire operating band. |
URI: | http://dyuthi.cusat.ac.in/purl/2712 |
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Dyuthi-P00352.pdf | (229.3Kb) |
Abstract: | The design and implementation of a novel asymmetric coplanar waveguide (ACPW ) band rejection filter using defected ground structure ( DGS) is presented . The proposed ACPW DGS technology provides band gap characteristics with only one cell in the lateral ground plane . The equivalent circuit model of the proposed DGS unit section is described . Measurements of ACPW DGS showed good agreement with simulation and the proposed model |
URI: | http://dyuthi.cusat.ac.in/purl/1358 |
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Compact asymmetric coplanar waveguide filter.PDF | (576.9Kb) |
URI: | http://dyuthi.cusat.ac.in/purl/1307 |
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Anandan C K 1988.PDF | (284.3Kb) |
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