The paper presents the use of multipoint matching and loose over-coupled principles in designning TV band I especially 1 or 2 channel, circular-type transmission antenna. It uses thin metal wire with 30mm outer diameter in making antenna. When its VSWR is 1.05 in 47―57MHZ bandwidth of the unit antenna is 10 MHZ. When its VSWR≤1.1, the bandwidth is 15 MHZ. The relative bandwidth is over 28%. Its power Gain is 10 db. Weight of the unit antenna is 250kg approximately. It is four times as light as the weight of a same type circular unit antenna made by a famous factory at home.
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