Epcos is developing the miniaturisation of UMTS duplexers with filter components for W-CDMA bands I and V in case size 2016 that have a footprint of 2.0 x 1.6 mm2 and height of 0.45 mm.
The duplexers allow the integration of more bands in mobile phones whose size remains unchanged.
Co-banding is required for mobile phones and data cards operating in the networks of all UMTS providers worldwide and manufacturers are already developing mobile phones that operate in up to five different W-CDMA bands.
As transmit and receive frequencies lie very close to each other within a band, the filters must have good electrical parameters, such as high edge steepness.
The first duplexers of case size 2016 were implemented completely on a SAW basis. In future, the SAW filters will be complemented by BAW filters, which have better performance at certain frequencies.
Phone: 02 4943 4548
STMicroelectronics VNF9Q20F automotive circuit breaker
The STMicroelectronics VNF9Q20F automotive circuit breaker enhances boardnet voltage stability...
Würth Elektronik WE-CAR-TEC snap ferrites
The Würth Elektronik WE-CAR-TEC series of retrofittable snap ferrites are designed to...
Blueshift RockeTape thermal insulation tapes
The Blueshift RockeTape thermal insulation tapes feature AeroZero structured air polymeric...
