| 摘要 |
PURPOSE: A hybrid-LPF(Low Pass Filter) for a mobile terminal is provided to use a DCS(Digital Cellular System) frequency region together with a PCS(Personal Communication System) frequency region by additionally forming a lumped capacitor in one PCS band filter. CONSTITUTION: A PCS band filter(100) is composed as an m-type micro-strip line in a PCB, for passing a PCS frequency band of a received signal. Lumped capacitors(C3,C4) are formed at left/right lower sides of the m-type micro-strip line, for passing a DCS frequency band of a received signal. A horizontal width of the m-type micro-strip line formed in the PCB is 3.0cm, and a vertical width of the m-type micro-strip line is 1.0cm. |
