Spiral antenna has spiral arms fed at outer spiral arm ends via common input, especially strip, cable, from outer edge of antenna to antenna port(s) for supplying and/or receiving signals

摘要

The spiral antenna (1) has two electrically conducting spiral arms (5,10). The spiral arms are fed at their outer spiral arm ends via a common input line (25) a strip cable, from an outer edge of the spiral antenna to at least one terminal (30,35) of the antenna for supplying and/or receiving signals.