A method for rapid design and debugging a high restraint coaxial cavity filter

This paper illustrate the rapid design and debugging for a high restraint filter, by an example of a filter. we have designed a bandpass filter, which passband is 964MHz to 1029MHz, and at 960MHz the restraint is more than 40dB. The rapid methods include two parts, circuit synthesis and HFSS simulation. The way of debug the filter is by the delay and phase.