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Thursday, May 7, 2020 | History

2 edition of 225- to 400-MHz cavity-backed dipole with almost constant gain found in the catalog.

225- to 400-MHz cavity-backed dipole with almost constant gain

J. L. Wong

225- to 400-MHz cavity-backed dipole with almost constant gain

by J. L. Wong

  • 151 Want to read
  • 37 Currently reading

Published by Systems Engineering Operations, Aerospace Corporation in ElSegundo .
Written in English


Edition Notes

Statementprepared by J.L. Wong and H.E. King.
SeriesAerospace report -- no.TR-0073 (3401)-1, AD 760126
ContributionsKing, H. E., Aerospace Corporation. Systems Engineering Operations.
ID Numbers
Open LibraryOL13959607M


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225- to 400-MHz cavity-backed dipole with almost constant gain by J. L. Wong Download PDF EPUB FB2

Broadband Microstrip Antennas The gain of the antenna is dB. In comparison with the CMSA of radius a = 3 cm, the resonance frequency of the SCMSA is nearly same, but its BW is MHz, which is smaller than the MHz BW of the CMSA. This is because of the larger impedance variation due to its half the area as compared to CMSA.

This antenna is composed of concave cylinder, four shorting inductive posts, a top plate, and backed cavity, and achieves a wide impedance bandwidth from to MHz.

Indeed, a 5-dB increase in simulated gain was noticed when moving the antenna from to cm away from the body model. An embroidered version of the asymmetric meandered flare dipole in [ Models for calculation of dielectric constant of moist sandy-clayey soils in wavelengths from centimeters to tens of meters Sergey V.

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A little improvement of impedance is obtained in our case. Again the total six-element antenna dimension is less for our case, λ than the other two cases.(λ [5], λ [3]) and definitely will be helpful for the design of antenna in VHF range.

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