发明申请
US20070069838A1 FILTER AND RADIO COMMUNICATION DEVICE USING THE SAME 有权
使用该方法的过滤器和无线电通信装置

FILTER AND RADIO COMMUNICATION DEVICE USING THE SAME
摘要:
A filter includes a resonant unit which has a plurality of resonators respectively formed of each microstrip line and connected in cascade with one another, and a coupling unit which has at least one inter-resonator coupling of the resonant unit in an area within a range of ±45° (⅛-wavelength) in an electrical length from a voltage maximum point at a intermediate of the microstrip line.
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