Tightly Coupled Array Antennas for Ultra-Wideband Wireless Systems

Tightly coupled array (TCA) antenna has become a hot topic of research recently, due to its

array antenna is promising for applications in numerous wideband/multi-band and multi-function wireless

global navigation satellite systems, sensors, wireless power transmission, internet of things and so on. Many

review of the recent development on TCA that utilizes the capacitive coupling. The basic principles and the

of TCAs, such as equivalent circuit analysis, bandwidth limitation analysis, array elements, feed structures,

TCAs are presented and a comparison amongst some TCAs reported recently is summarized and discussed.

the TCA are explained so as to demonstrate the TCA design methodology. Simulated results including the

and future work are given in the end.