职位描述：
1. simulation tools [matlab, hfss], filter design 2. solid knowledge in microwave and electromagnetic field.
3. strong circuit and field simulation skills utilizing matlab (preferred), hfss (preferred), or equivalent.
4. experiences of cavity filter design and passive components design such as coupler, lpf etc.
5. proficiency in the use of test equipment such as network analyzer, spectrum analyzer, rf generator, power meter etc