Abstract
Auto
-pointing and angular super
-resolution
properties of the radiation patterns generated by an electrically
compact retrodirective monopole antenna array are
demonstrated experimentally for the first time. The operation of
electrically compact (element spacings less than one fifth of the
radiation wavelength) retrodirective antenna arrays that were
theoretically considered in our previous work are confirmed by
measurement. Particularly it is shown that the Direction
-ofArrival
(DoA) information carried by an incident
electromagnetic wave can be encoded into the evanescent near
field of an electrically small resonant antenna array with a spatial
rate higher than the spatial oscillation rate of the incident field in
free space. This observation is supported by the near field
measurements demonstrating that the magnitude of the scattered
(evanescent) field in the array environment can exceed the
magnitude of the incident field in free space by at least 6dB.
Retrodirective array antenna matching and the feasibility of a
frequency
-division full
-duplex communication link based on the
proposed antenna arrays are also discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 2339-2347 |
| Number of pages | 9 |
| Journal | IEEE Transactions on Antennas and Propagation |
| Early online date | 17 Mar 2017 |
| DOIs | |
| Publication status | Published - May 2017 |
