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Duplexers improve handset sensitivity, dynamic range

Posted: 18 Mar 2010 ?? ?Print Version ?Bookmark and Share

Keywords:duplexer? UMTS? handset receiver?

ACMD-7410/7609/7606 duplexers

Avago Technologies has launched three miniature high-performance duplexers for use in UMTS Bands 2, 4, and 8 handsets and data terminals.

The ACMD-7410/7609/7606 duplexers are low insertion loss, high isolation and high rejection duplexers that are achieved using Avago's Film Bulk Acoustic Resonator (FBAR) technology. Avago's innovative Microcap bonded wafer technology allows these duplexers to be assembled in a molded chip-on-board module that is less than 0.95mm high with a footprint of 2mm x 2.5mm.

These latest additions to Avago's family of miniature UMTS duplexers have been designed to enhance the sensitivity and dynamic range of handset receivers by providing high isolation of transmitted signals from the receiver input, and high rejection of transmit-generated noise in the receive band. Moreover, the superior power handling capability of the FBAR bulk-mode resonators designed into these duplexers support the high output power levels used in mobile communications applications while adding virtually no distortion.

Avago's ACMD-7410 is a multimode duplexer designed for use in UMTS Band 2 and CDMA PCS applications with the receive channel capable of being used for GSM1900 Rx co-banding. The ACMD-7609 is a multimode duplexer for use in UMTS Band 4 duplexer and CDMA AWS-1 applications. Completing the trio of new duplexers from Avago is the ACMD-7606, which is designed for use in UMTS Band 8 handsets and mobile data terminals.

The duplexers come in standard 2mm x 2.5mm RoHS-compliant, halogen-free and TBBPA-free PCB footprint. The devices feature 31dBm maximum Tx power and operate at -20:C to +85:C.

Duplexer specifications are as follows:

??Band 2ACMD-7410 Rx Band performance: 1.4dB typical insertion loss; 61dB typical Rx noise blocking. Tx Band performance: 1.4dB typical insertion loss; 66dB typical Tx interferer blocking.

??Band 4ACMD-7609 Rx Band performance: 1.3dB typical insertion loss; 58dB typical Rx noise blocking. Tx Band performance: 1.3dB typical insertion loss; 60dB typical Tx interferer blocking.

??Band 8ACMD-7606 Rx Band performance: 2.2dB typical insertion loss; 55dB typical Rx noise blocking. Tx Band performance: 2.2dB typical insertion loss; 60dB typical Tx interferer blocking.

All three of Avago's new UMTS duplexers are available now with pricing starting from $1.99 for the ACMD-7410 and $1.44 for the ACMD-7609/7606 in 10,000-unit volumes.





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