Today's wireless communication, satellite communication and advanced military systems, require antennas of higher performance, higher gain, wider bandwidth, multiband support, low cost and conventionally smaller design dimensions. To fulfill all these requirements researchers are looking for more advanced antenna designs. An antenna is basically a length of a conductor and acts as a conversion device. It serves a link between the transmitter and receiver. Therefore, in order to understand the challenges that antenna basics provides to antenna designers, a comprehensive background outlining several characterizing antenna parameters has been presented.