Product category:
Frequency Control Components
News Release from: Epcos | Subject: CDMA IF filter
Edited by the Electronicstalk Editorial
Team on 27 May 2002
Shrinking SAWs save space in CDMA
designs
Epcos has become the world's first manufacturer of surface wave acoustic components to make IF filters with a footprint of only 7 x 5mm for CDMA mobile phone applications.
Epcos has become the world's first manufacturer of surface wave acoustic components to make IF filters with a footprint of only 7 x 5mm for mobile phone applications that are compliant with the IS-95 CDMA standard Until now the standard size for IF filters was 9 x 5mm Electronic design engineers can now have the benefit of space savings combined with performance
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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Low-profile design for tantalum polymer capacitors
Epcos is now shipping polymer tantalum capacitors in case size X, measuring only 1.5 mm high, 7.3 mm long and 4.3 mm wide.
The filter has been designed to have an intermediate frequency of 183.6MHz combined with an insertion loss in the passband of only 8dB and attenuation in the stopband of better than 37dB.
Epcos claims this filter has the best performance characteristics in the world for these parameters.
This feat of miniaturisation was made possible by the CSSP (chip-size SAW package) technology patented by Epcos.
The new filter was designed especially for use with the Qualcomm chipset the market dominator in CDMA mobile phones and includes an integrated balun as standard.
CDMA is a technology used in North America, Japan and Korea, which currently have the world's fastest growing mobile radio networks.
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