TY - JOUR
T1 - Indirect holographic imaging of antennas using an electronically synthesised "slow-wave"
AU - Smith, Dave
AU - Leach, Mark
AU - Kellner, A.
PY - 2004
Y1 - 2004
N2 - The use of indirect holographic techniques, where radiation characteristics and antenna aperture fields can be obtained from simple intensity measurements made in the near field, has traditionally been restricted to the measurement of large antennas with small angular spread. The following work describes how this limitation can be overcome by synthesising a reference wave with wave vector in excess of the free space wave vector. This enables the radiation characteristics and complex aperture fields of much smaller antennas to be determined. Results are included to show how this technique can be applied to a standard gain pyramidal horn antenna.
AB - The use of indirect holographic techniques, where radiation characteristics and antenna aperture fields can be obtained from simple intensity measurements made in the near field, has traditionally been restricted to the measurement of large antennas with small angular spread. The following work describes how this limitation can be overcome by synthesising a reference wave with wave vector in excess of the free space wave vector. This enables the radiation characteristics and complex aperture fields of much smaller antennas to be determined. Results are included to show how this technique can be applied to a standard gain pyramidal horn antenna.
U2 - 10.1109/APS.2004.1329767
DO - 10.1109/APS.2004.1329767
M3 - Article
SN - 0272-4693
VL - 1
SP - 703
EP - 706
JO - AP-S International Symposium (Digest) (IEEE Antennas and Propagation Society)
JF - AP-S International Symposium (Digest) (IEEE Antennas and Propagation Society)
ER -