| 摘要 |
PURPOSE: An ultra wideband pass filter with a notch band is provided to enable a user to easily select a frequency for the notch band by using an LC resonator with a simple structure. CONSTITUTION: An ultra wideband pass filter(800) includes a high pass filter and a low pass filter(250). The high pass filter includes a pair of radial stubs(520,525) with a fan shape. The low pass filter includes a defect ground structure and a pair of open stubs. The defect ground structure is formed by etching a ground surface corresponding to a space between a pair of microstrip lines. The pair of open stubs are vertical to a transmission line. |
