Focused near-field adaptive nulling: experimental investigation
- Resource Type
- Conference
- Authors
- Fenn, A.J.; Aumann, H.M.; Willwerth, F.G.; Johnson, J.R.
- Source
- International Symposium on Antennas and Propagation Society, Merging Technologies for the 90's Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.. :186-189 vol.1 1990
- Subject
- Fields, Waves and Electromagnetics
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Aerospace
Adaptive arrays
Phased arrays
Testing
Linear antenna arrays
Antenna measurements
Interference cancellation
Planar waveguides
Rectangular waveguides
Waveguide theory
Aperture antennas
- Language
Focused near-field adaptive nulling has been demonstrated using an experimental linear phased array and a four-channel receiver. The measured adaptive cancellation of one near field interference source was in good agreement with theoretical predictions. The theory assumes that a dipole array without ground plane is the approximate dual of a rectangular waveguide array with ground plane. The results indicate that adaptive antenna performance testing using focused near-field adaptive nulling at approximately one aperture diameter range distance is a viable alternative to conventional far-field testing.ETX