Final answer:
The blade antenna is a type of antenna used in radios and communications systems, but it cannot determine the angle of arrival of incoming signals.
Step-by-step explanation:
The blade antenna is a type of antenna commonly used in radios and communications systems. It is a simple, straight rod or wire that extends from a radio or device to receive or transmit signals. However, the blade antenna is not capable of determining the angle of arrival (AOA) of the incoming signals.