Radiation efficiency and input impedance of monopole elements with radial-wire ground planes in proximity to Earth

Weiner,; Zamoscianyk,; Burke,

doi:10.1049/el:19920984

Cited by 5 publications

(3 citation statements)

References 5 publications

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“…Numerical results for the radiation efficiency of quarter-wave monopole elements with radial-wire groundscreens in proximity to Earth have been obtained by Burke [33] and Weiner [50] …”

Section: Quarter-wave Monopole Element On a Radial-wire Groundscreen mentioning

confidence: 99%

Performance of Ground-Based High-Frequency Receiving Arrays with Electrically-Small Ground Planes

Weiner¹

1991

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Electrically-small ground planes degrade the performance of ground-based highfrequency receiving arrays because the arrays are more susceptible to earth multipath, ground losses, and external currents on element feed cables. Performance degradations include a reduction in element directive gain near the horizon, distortion of the element azimuthal pattern, an increase in the system internal noise factor, and increases in the array factor root-mean-squared (rms) phase error and beam-pointing errors. The advantage of electrically-small ground planes is their relatively low cost of construction and maintenance. iii,-- k-------

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“…Numerical results for the radiation efficiency of quarter-wave monopole elements with radial-wire groundscreens in proximity to Earth have been obtained by Burke [33] and Weiner [50] …”

Section: Quarter-wave Monopole Element On a Radial-wire Groundscreen mentioning

confidence: 99%

Performance of Ground-Based High-Frequency Receiving Arrays with Electrically-Small Ground Planes

Weiner¹

1991

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“…N() is illustrated in Fig. 7 for the optimum radial wires for the angles 75°, 65°, 55°, 45°, 35° and 25° respectively as well as the practical suggestions associated with (15). The suggestions indicate that N() equals 73 in half domain and in the other half it is 219 which means N 1 = 73 and n i = 1 for all the structures.…”

Section: Practical Modification and Resultsmentioning

confidence: 99%

“…Some other approaches are used for this purpose such as equivalence theorem [13] and extinction theorem [14]. A comparatively new approach is the method of moments (MoM) which is outspreaded by the enhancement of computers [15]- [17]. Nevertheless, there are still some limitations for this method.…”

Section: Introductionmentioning

confidence: 99%

Optimum Functions for Radial Wires of Monopole Antennas with Arbitrary Elevation Angles

Fartookzadeh¹,

Armaki

Razavi³

et al. 2016

RADIOENGINEERING

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Influence of nonhomogeneous Earth on the rms phase error and beam‐pointing errors of large, sparse high‐frequency receiving arrays

Weiner¹

1994

Radio Science

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The performance of ground‐based high‐frequency (HF) receiving arrays is reduced when the array elements have electrically small ground planes. The array rms phase error and beam‐pointing errors, caused by multipath rays reflected from a nonhomogeneous Earth, are determined for a sparse array of elements that are modeled as Hertzian dipoles in close proximity to Earth with no ground planes. Numerical results are presented for cases of randomly distributed and systematically distributed Earth nonhomogeneities where one‐half of vertically polarized array elements are located in proximity to one type of Earth and the remaining half are located in proximity to a second type of Earth. The maximum rms phase errors, for the cases examined, are 18° and 9° for randomly distributed and systematically distributed nonhomogeneities, respectively. The maximum beampointing errors are 0 and 0.3 beam widths for randomly distributed and systematically distributed nonhomogeneities, respectively.

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Radiation efficiency and input impedance of monopole elements with radial-wire ground planes in proximity to Earth

Cited by 5 publications

References 5 publications

Performance of Ground-Based High-Frequency Receiving Arrays with Electrically-Small Ground Planes

Performance of Ground-Based High-Frequency Receiving Arrays with Electrically-Small Ground Planes

Optimum Functions for Radial Wires of Monopole Antennas with Arbitrary Elevation Angles

Influence of nonhomogeneous Earth on the rms phase error and beam‐pointing errors of large, sparse high‐frequency receiving arrays

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