New miniature high-pass thin-film filters

Kyocera AVX has launched a new series of miniature high-pass thin-film filters engineered to supply outstanding high-frequency performance in various space-constrained microwave and RF applications in the telecommunications, automotive, consumer electronics, and defence markets.

The new HP Series high-pass thin-film filters are based on proven multilayer integrated thin-film technology that enables the quick adjustment of RF parameters and the development of custom filters. They exhibit reliable and repeatable high-frequency performance, low insertion losses, extremely sharp roll-off values, and steep attenuation. The series filters also show high-temperature stability and lot-to-lot and part-to-part consistency and feature a rugged, miniature, and low-profile construction optimised for automated assembly. They are rated for operating frequencies spanning 1GHz to 5.15GHz and operating temperatures extending from -40C to +85C and have a characteristic impedance of 50-Ohm.

HP0805 high-pass thin-film filters currently provide five part numbers optimised for 2.7, 2.8, 2.9, 3, and 5.15GHz performance to allow broad compatibility with high-frequency wireless systems, including 5G and ultra-wideband applications and the high-power remote radio units in base stations. Their miniature cases measure just 2.03mm x 1.55mm x 0.8mm (L x W x H, ±0.1mm) and have a 3W continuous power rating.

HP2816 thin-film high-pass filters measure 7mm (±0.3mm) x 4mm (±0.2mm) x 1.2mm max. (L x W x H). They are rated at 15W and are also ideal for defence applications.

“Our new HP Series high-pass thin-film filters provide engineers with superior, repeatable performance in a miniature case size optimised for the smaller and more densely populated PCBs common in next-generation wireless applications,” said Amir Kopelman, technical services manager, Kyocera AVX. “The multilayer thin-film technology they’re based on allows us to quickly adjustment RF parameters and develop custom filters with a short lead time. In addition, we manufacture our thin film filters in an ISO 9001 facility equipped with extremely accurate processing lines that support design flexibility, reduce noise, prevent shrinkage, ensure high-quality parts and performance, and allow us to achieve consistent manufacturing results and deliver excellent filtering performance in smaller device sizes than competing technologies provide.”

The series high-pass thin-film filters have RoHS-compliant lead-free and solder-coated nickel terminations compatible with reflow, wave, vapour phase, and manual automatic soldering technologies. Finished parts are 100% tested for electrical parameters and visual and mechanical characteristics, and parts are packaged on tape and reel.

Ideal applications include wireless LANs, satellite TV receivers, vehicle location systems, ground and mobile communications systems ranging from handheld commercial radios to defence communications systems.