| 摘要 |
A filter module suppressing an interference signal is provided to secure a high skirt characteristic and an isolation characteristic by connecting a BPF(Band Pass Filter) and an LNA(Low Noise Amplifier) in series. A filter module(10a,10b) suppressing an interference signal includes a plurality of filters and low noise amplifier. The plurality of filters pass and stop the frequency signal of a predetermined band. The plurality of filters have the same characteristic. The plurality of filters is comprised of one of dielectric, a metal cavity, a DR-metal cavity and a strip line. The low noise amplifier is connected in series to the filter to compensate for insertion loss generated in the filter. A compensation circuit(20) compensates for the ripple generated in the filter module. |
