Product category:
Frequency Control Components
News Release from: Avago Technologies | Subject: ACPF-7002
Edited by the Electronicstalk Editorial
Team on 27 February 2004
Transmit filter cuts size for PCS
handsets
A new, smaller film bulk acoustic resonator full-band transmit filter is now available for handsets, data cards and other wireless products operating in the US PCS frequency band.
A new, smaller film bulk acoustic resonator (FBAR) full-band transmit filter is now available for handsets, data cards and other wireless products operating in the US PCS (personal communications service) frequency band The ACPF-7002 is 66% percent smaller and provides higher performance than Agilent's first-generation ACPF-7001 full-band filter
This article was originally published on Electronicstalk on 25 Mar 2005 at 8.00am (UK)
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In typical CDMA handset architectures, the transmit filter is incorporated between the driver amplifier and the power amplifier to reduce noise in the receive band, thereby enhancing receiver sensitivity.
The high rejection capability of Agilent's miniature FBAR transmit filter keeps out unwanted signals, and its low insertion loss increases transmitter efficiency and performance.
Many of today's CDMA handset designs use two surface acoustic wave (SAW) split-band filters to cover the 1850-1880 and 1880-1910MHz portions of the PCS transmit frequency range, with the appropriate filter selected via a radio-frequency switch.
Agilent's FBAR full-band filter eliminates the need for a second filter, a radio-frequency switch and associated passive components.
This space savings reduces the printed circuit board area required for the transmit filter by up to 90%, while lowering manufacturing costs and eliminating the need for interface design and programming.
The ACPF-7002 is the first full-band transmit filter built with Agilent's innovative Microcap bonded-wafer chip scale packaging technology.
This process allows the ultrasmall filter to be assembled in a moulded-chip-on-board (MCOB) module that is less than 1.0mm high with a 1.6 x 2.0mm footprint.
In addition to small size and high performance, the ACPF-7002 offers these features for handset and data card design: typical insertion loss of 2.5 dB over the 1850-1910MHz transmit band; minimum attenuation of 33dB over the 1930-1990MHz receive band; receive chain with a lower third-order intercept point (less dynamic range), thus saving current; and filter specified over the -30 to +85C temperature range Samples and production quantities of the ACPF-7002 are immediately available.
Agilent plans to make the ACPF-7002 available through its distribution partners in the first half of 2004. Request a free brochure from Avago Technologies ...
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