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Balanced antipodal Vivaldi antenna for wide bandwidth phased arrays

Balanced antipodal Vivaldi antenna for wide bandwidth phased arrays

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The Vivaldi antenna, a form of tapered slot radiator, has been shown to produce good performance over a wide bandwidth, limited only by the traditionally used slotline to microstrip feed transition. The authors present a new antenna, the balanced antipodal Vivaldi, which incorporates an ultrawide bandwidth transition and overcomes the poor polarisation performance of the antipodal form. Good performance over a 1 to 40 frequency range has been obtained. The use of the antenna in a linear phased array has also been investigated using elements constructed on high permittivity substrate. Wideband wide angle scanning with good cross-polarisation levels is obtained.

Inspec keywords: scanning antennas; antenna phased arrays; linear antenna arrays; antenna radiation patterns; slot antenna arrays

Other keywords: wideband wide angle scanning; tapered slot radiator; high permittivity substrate; ultrawide bandwidth transition; slotline to microstrip feed transition; 1 to 40 GHz; wide bandwidth phased arrays; linear phased array; balanced antipodal Vivaldi antenna; cross-polarisation levels

Subjects: Antenna arrays

References

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      • J.D.S. Langley , P.S. Hall , P. Newham . Novel ultrawide-bandwidthVivaldi antenna with low crosspolarisation. Electron. Lett. , 23 , 2004 - 2005
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      • N. Fourikis , N. Lioutas , N.V. Shuley . Parametric study of co and crosspolarisation characteristics of tapered planar and antipodal slotline antennas. IEE Proc. Microwaves, Antennas and Propagation , 1 , 17 - 22
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      • Langley, J.D.S., Hall, P.S., Newham, P.: `Balanced antipodal Vivaldi antenna formulti-octave bandwidth phased arrays', Int. Conf. JINA '94, 8–10 November 1994, , p. 585–588.
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