Epcos has developed a new series of SAW filters for digital satellite radio systems and receivers for home, vehicle and portable use. Compared to other multimedia applications such as TV sets, digital satellite radio receivers and equipment require several different intermediate frequency (IF) SAW filters due to the diverse terrestrial and satellite paths.
The new EPCOS B170 series of IF bandpass filters in a ceramic SMD package are designed for low insertion attenuation. In the stopband, attenuation rates up to and exceeding 50 dB are attained.
Other filter series employed for digital satellite radio systems include the X730 series in a plastic case and the B171 series in a ceramic SMD package. All of the packages developed were designed to suit the application in both consumer and automotive electronics environments.
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