Microstrip log-periodic antenna array with endfire beam

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Microstrip log-periodic antenna array with endfire beam

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© The Institution of Electrical Engineers
Published

Endfire action with a very wide-bandwidth, low-profile antenna array has not yet been achieved. After showing that a conventional microstrip log-periodic array cannot be successfully scanned from broadside to endfire, a new configuration involving quarter-wavelength shorted patches is described. First-order theory indicates that good endfire action should be possible, and this is confirmed by preliminary measurements on an array designed for a 25% bandwidth. Radiation pattern control is seen to be the most critical performance parameter.

Inspec keywords: microwave antenna arrays; microstrip antennas; scanning antennas; antenna radiation patterns; mobile antennas

Other keywords: microwave array; microstrip; scanning; radiation pattern control; mobile type; endfire beam; quarter-wavelength shorted patches; log-periodic antenna array; aerospace vehicles; wide-bandwidth; low-profile

Subjects: Antenna arrays; Waveguide and microwave transmission line components

References

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      • J.W. Greiser , P.E. Mays . The bent backfire zigzag. IEEE Trans. , 281 - 290
    2. 2)
      • H. Pues , J. Bogaers , R. Pieck , A. van de Capelle . Wideband quasi log-periodic microstrip antenna. IEE Proc. H, Microwaves, Opt. & Antennas , 159 - 163
    3. 3)
      • D.E. Isbell . Log periodic dipole arrays. IRE Trans. , 260 - 267
    4. 4)
      • P.S. Hall . Multioctave bandwidth log-period microstrip antenna array. IEE Proc. H, Microwaves, Antennas & Propag. , 127 - 136
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