1) Radio frequency antenna type
Found on
https://www.crosswordclues.com/clue/rectenna
A rectenna is a rectifying antenna, a special type of antenna that is used to convert microwave energy into direct current electricity. They are used in wireless power transmission systems that transmit power by radio waves. A simple rectenna element consists of a dipole antenna with an RF diode connected across the dipole elements. The diode rect...
Found on
http://en.wikipedia.org/wiki/Rectenna
No exact match found.
