Recently, an argument on the possibility of achieving the time-invariant beampatterns of frequency diverse arrays (FDAs) was discussed. The conclusion that time-invariant FDA beampatterns are impossible in free space applications is indisputable. However, the analyses are not convincing as they tangle two issues, namely the time-range relationship and the pattern propagation as time elapses. In this paper, the time-variant FDA beampatterns with a single maximum at the specific spatial position have been revisited and carefully examined. Following rigorous illustrative simulations and analysis, the authors argue that at a fixed time instant, the previously reported time-variant FDA beampatterns with a single maximum at the target locations are possible when the time references are carefully selected.
|Number of pages||3|
|Publication status||Accepted/In press - 25 Mar 2020|
|Event||IEEE MTT-S International Wireless Symposium 2020 - Shanghai, China|
Duration: 20 Sep 2020 → 23 Sep 2020
|Conference||IEEE MTT-S International Wireless Symposium 2020|
|Abbreviated title||IWS 2020|
|Period||20/09/20 → 23/09/20|