Patent ID: 8242860

Claim:
A sequential rotated feeding circuit for sequential rotated feeding of a signal with a wavelength λ g , comprising: a feed transformer, having a feed line width resistance Z in ; a resistance transforming unit, comprising a first resistance transformer and a second resistance transformer, wherein the first resistance transformer and the second resistance transformer are connected to the feed transformer, and the first resistance transformer and the second resistance transformer have a transforming line width resistance Z l ; a first antenna transformer, connected to the first resistance transformer; a second antenna transformer, connected to the first resistance transformer; a third antenna transformer, connected to the second resistance transformer; and a fourth antenna transformer, connected to the second resistance transformer, wherein the first antenna transformer, the second antenna transformer, the third antenna transformer and the fourth antenna transformer have an antenna line width resistance Z a , and the feed line width resistance Z in , the transforming line width resistance Z l , and the antenna line width resistance Z a satisfy the following formula: Z l =√{square root over ( Z a Z in )}.