Abstract: Due to the low frequency and long wavelength of the filter,it belongs to the VHF. In order to ensure its miniaturization,this filter is realized by semi-lumped and semi-distributed structure used in the design. To ensure its high performance,we use the LTCC technology which is advance in the world.The stopband rejection characteristics have been improved by cross coupling to adding transmission zeros and using the technology of filter cascading. Using the circuit simulation and 3D simulation software to optimize and simulate,the measured results of the filter satisfy its performance requirement. The centre frequency of the BPF at 170 MHz,its bandwidth is 60 MHz,between 50 MHz and 100 MHz the stop-band attenuation is more than 20 dB and the same between 280 MHz and 400 MHz. Its size of the fabricated filter is only 9mm × 3. 2 mm × 1. 5 mm.