Transmission and Reception by Ultra-Wideband (UWB) Antennas

Ghosh, Debalina; De, Arijit; Taylor, Mary E.; Sarkar, Tapan K.; Wicks, Michael C.; Mokole, Eric L.

doi:10.1109/map.2006.277157

Cited by 108 publications

(39 citation statements)

References 29 publications

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“…Since the impedance bandwidth of the conventional helical antenna is about 2 : 1, it is a potential candidate for wideband pulse radiation [4,5,16]. In this section, we investigate the time-domain radiation characteristics of a helical antenna.…”

Section: Effects Of Current Modes On Time-domain Radiationmentioning

confidence: 99%

Improved Current Decomposition in Helical Antennas Using the Esprit Algorithm

Li¹,

Líu²

2010

PIER

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Abstract-We apply the ESPRIT algorithm to decompose the currents on a helical antenna into different traveling wave modes. The strengths, phase velocities and decay constants of the various modes are extracted across frequencies. Their contributions to the antenna performance including gain, polarization and time-domain radiated pulse shape are investigated. Our results show that the T + 0 mode is a dominant contributor to the helix gain at the low end of the frequency band while the T + 1 mode contributes significantly to the gain at higher frequencies. It is also found that the reflected current modes from the open end reduce the circular polarization purity of the helix. Lastly, it is observed that the T + 1 and T + 0 modes contribute constructively to a low-dispersion pulse from the antenna.

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Section: Effects Of Current Modes On Time-domain Radiationmentioning

confidence: 99%

Improved Current Decomposition in Helical Antennas Using the Esprit Algorithm

Li¹,

Líu²

2010

PIER

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“…Additionally, the symmetrical nature of the monocycle does not permit the generation of dc currents during numerical computation, so the output of an antenna excited by a monocycle pulse has no dc component. The usefulness of the monocycle pulse is evident from the paper by Ghosh, et al [8] where the monocycle has been successfully used as input to various UWB antennas. In this case, the monocycle pulse is obtained by taking the time derivative of a short duration Gaussian pulse.…”

Section: Input Pulsementioning

confidence: 99%

“…As the antenna has a pattern similar to that of a short dipole as shown in Figures 3(a), 6(a) and 8(a), the radiated field of the bicone should be similar to the radiated field of a short dipole. In the case of an electrically small dipole, the far field is proportional to the second temporal derivative of the transient current on the structure whereas the received open circuit voltage is approximately the derivative of the incident field [8,9]. This statement is verified by Figure 10(a) where the radiated field is the second derivative of the monocycle input voltage shown in Figure 9(a) and by Figure 10(b) where the received field is the derivative of the monocycle incident wave of Figure 9(a).…”

Section: Electrically Small Antenna With Dipole-like Radiation Patternmentioning

confidence: 99%

“…Loading the antenna with a predetermined resistive profile reduces the dispersion from the antenna. Application of the loading profile has been illustrated for different antennas in [8]. If the antenna has a height of 2h and a radius of r, the parameter ψ used for obtaining the loading profile [8] can be defined as follows: (a) (b) Figure 13.…”

Section: Electrically Large Antenna For Angle-specific Applicationsmentioning

confidence: 99%

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Design of a Wide-Angle Biconical Antenna for Wideband Communications

Ghosh¹,

Sarkar²,

Mokole³

2009

PIER B

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Abstract-The wide-angle bicone antenna terminated by a spherical cap is investigated. The antenna radiation patterns have been observed for various values of ka where k represents the phase constant and a represents the conical length. It is seen that for large values of ka the radiation pattern is limited within an angular sector bounded by the cones of the antenna. Next the antenna is optimized for ultrawideband (UWB) operation through the use of loading techniques. The transient wideband radiated and received responses of the antenna have been observed and the relationship between the wave shapes of the transient field and the input pulse have been determined.

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“…The volcano smoke antenna is a conventional wideband antenna and it was originally designed by Kraus [1]. And there are also some recent investigations on this kind of antenna [2][3][4][5]. However, the classic volcano smoke antenna is a volumetric ultra-wide band antenna and its application is limited.…”

Section: Introductionmentioning

confidence: 99%

A Printed Volcano Smoke Antenna for Uwb and Wlan Communications

Gao¹,

Yang²,

Zhang³

2008

PIER Letters

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Abstract-A novel printed version of the classic volcano smoke antenna is presented and investigated in this article. The effects of some important parameters on the VSWR of the proposed antenna have been investigated in the design. The measured bandwidth of VSWR < 2 is from 1.80 to 14.35 GHz, which covers all UWB (3.1-10.6 GHz) and 2.4 GHz WLAN (2.4-2.4835 GHz) bands. Moreover, the antenna features near omnidirectional characteristics in the operation range and good radiation efficiency. A gain variation from 2.04 to 7.02 dBi (2-13 GHz) is obtained.

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Transmission and Reception by Ultra-Wideband (UWB) Antennas

Cited by 108 publications

References 29 publications

Improved Current Decomposition in Helical Antennas Using the Esprit Algorithm

Improved Current Decomposition in Helical Antennas Using the Esprit Algorithm

Design of a Wide-Angle Biconical Antenna for Wideband Communications

A Printed Volcano Smoke Antenna for Uwb and Wlan Communications

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