Patent ID: 9325045
Filing Date: 2016-04-26
CPC Classification: H01P

Claim Text:
1. A filter having a microstrip line structure, comprising: n (n is a natural number larger than or equal to three) resonators arranged from a first resonator to n-th resonator; an input line coupled to the first resonator; and an output line coupled to an n-th resonator, wherein each of the n resonators includes a first comb structure, a second comb structure, and a connection line connecting the first comb structure and the second comb structure to each other, each of the first and second comb structures having a plurality of first lines extending substantially parallel to each other and a second line connected to one ends of each of the first lines, the first lines of the first comb structure and the first lines of the second comb structure are arranged so as to be substantially parallel to each other, the connection line includes bending portions, and the connection line is connected to the second line of each of the first comb structure and the second line of the second comb structure, a second comb structure of a k (1≦k≦n−2)-th resonator and a first comb structure of a (k+1)-th resonator are arranged so as to have an interlaced arrangement, and a second comb structure of the (k+1)-th resonator and a first comb structure of a (k+2)-th resonator are arranged so as to have an interlaced arrangement.