Abstract
Band-pass filters with low insertion loss and high frequency selectivity are widely used in the modern electric device and communication systems. With the requirement of the electrical system miniaturization, embedded filter was proposed because of its light weight and excellent performance. In this paper, a fully embedded VHF band-pass filter with bandwidth from 280 MHz to 400 MHz is designed and fabricated based on the BaTiO 3 -epoxy composite film. The filter is composed of a power plane with cross coupled microstrips and a double helical ground structure (DGS). The size of the band-pass filter is 5mm× 5 mm. It was embedded in a multi-layered FR-4 packaging substrate through the PCB manufacturing process. The measured results of insertion loss and return loss are similar to the simulated results. The measured results shows that the insertion loss is no more than 3.8 dB in pass-band and over 10 dB suppression is obtained at above 1.2 GHz, which is important for the practical application in communication. The embedded band-pass filter using BaTiO 3 -polymer film as a substrate is a new way for electronic system miniaturization.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
