Title :
Multi-octave phased array for circuit integration using balanced antipodal Vivaldi antenna elements
Author :
Langley, J.D.S. ; Hall, P.S. ; Newham, P.
Author_Institution :
Birmingham Univ., UK
Abstract :
A novel wide bandwidth antenna designed for use in integrated phased arrays is described. The balanced antipodal Vivaldi antenna exhibits a very wide bandwidth combined with low cross polarisation and this performance is well suited for use in EW systems. Measured performance of this new antenna is compared to both the conventional Vivaldi and the antipodal Vivaldi antennas. It is shown that the new antenna has major advantages over the Vivaldi in terms of increased bandwidth capabilities and over the antipodal Vivaldi in terms of improved cross polar performance. Initial results are presented for a seven element linear array using elements made on high permittivity substrate. Analysis using the FDTD method is used for both element optimisation and to provide insight into the antenna operation.
Keywords :
antenna phased arrays; electromagnetic wave polarisation; electronic warfare; finite difference time-domain analysis; linear antenna arrays; microstrip antenna arrays; military equipment; optimisation; EW systems; FDTD method; antenna operation; balanced antipodal Vivaldi antenna elements; bandwidth capabilities; circuit integration; cross polar performance; cross polarisation; element optimisation; high permittivity substrate; integrated phased arrays; multi-octave phased array; seven element linear array; Antenna arrays; Antenna measurements; Bandwidth; Finite difference methods; Integrated circuit measurements; Linear antenna arrays; Permittivity; Phased arrays; Polarization; Vivaldi antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1995. AP-S. Digest
Conference_Location :
Newport Beach, CA, USA
Print_ISBN :
0-7803-2719-5
DOI :
10.1109/APS.1995.529990