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Product category: Frequency Control Components
News Release from: Avago Technologies | Subject: ACMD-7401
Edited by the Electronicstalk Editorial Team on 27 February 2004

FBAR duplexer shrinks by two-thirds

The ACMD-7401 is billed as the industry's smallest film bulk acoustic resonator (FBAR) duplexer for handsets, data cards and other wireless products operating in the US PCS frequency band.

The ACMD-7401 is billed as the industry's smallest film bulk acoustic resonator (FBAR) duplexer for handsets, data cards and other wireless products operating in the US PCS (personal communications service) frequency band The ACMD-7401 FBAR duplexer is 66% smaller than Agilent's first-generation HPMD-7904 FBAR duplexer, which is currently shipping in more than 80% of new CDMA handsets designed for the US PCS market

Duplexers play a critical role in CDMA handsets and data cards by separating incoming communications from outgoing communications to allow for simultaneous two-way voice or data transmission.

Traditionally, duplexers have been the second largest component in a wireless phone, after the battery.

The ultrathin ACMD-7401 FBAR duplexer makes it possible to design even slimmer mobile phones, and the tiny footprint allows for additional handset features such as a camera module, GPS locator and Bluetooth connectivity.

The ACMD-7401 is the first duplexer built with Agilent's innovative Microcap bonded-wafer chip scale packaging technology.

This process allows the ultrasmall filters to be assembled in a moulded-chip-on-board (MCOB) module that is less than 1.4mm high with a 5 x 5mm footprint, less than one-tenth the volume of competing ceramic devices.

These dimensions also enable miniature RF modules with increased functionality to be embedded into other portable consumer appliances.

Agilent has also developed a new, smaller FBAR full-band transmit filter (ACPF-7002) that incorporates Microcap technology.

In addition to its ultrathin size, the ACMD-7401 FBAR duplexer offers low TX insertion loss and excellent rejection that enhances sensitivity while optimising battery life: low receive-band insertion loss of 2.2dB typical; low transmit-band insertion loss of 1.8dB typical; proven reliability at high power and temperature conditions that reduces phone degradation, helping to keep network efficiency high; 44dB receiver noise blocking and 54dB transmit interferer blocking typical; and +30dBm transmit power-handling capacity.

Samples and production quantities of the ACMD-7401 are available now.

Agilent plans to make the duplexer available through its distribution partners in the first half of 2004. Request a free brochure from Avago Technologies ...

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