Product category:
Communications ICs (Wireless)
News Release from: RF Micro Devices | Subject: RF4180
Edited by the Electronicstalk Editorial
Team on 13 February 2008
Transmitter module saves space and power
Dual-band transmit module features two symmetrical receive ports, 50ohm matched input and output ports and GSM/GPRS Class 12 compliance.
The RF4180 PowerStar dual-band GSM/GPRS transmit module from RF Micro Devices is designed to reduce front end complexity and address the price and performance requirements of emerging market handsets The RF4180 PowerStar transmit module leverages RFMD's state-of-the-art power control capabilities to deliver reduced solution size, simplified transmitter design, best-in-class harmonics and ease of implementation
This article was originally published on Electronicstalk on 25 Apr 2003 at 8.00am (UK)
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The RF4180 is a dual-band transmit module featuring two symmetrical receive ports, 50ohm matched input and output ports and GSM/GPRS Class 12 compliance.
The transmit module, which is designed for use as the final portion of transmit sections in GSM900/DCS1800 handsets, minimises the requirement for PA-antenna matching.
When mated with leading cellular baseband SoCs, the RF4180 delivers a highly integrated radio solution capable of accelerating time to market cost-effectively.
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The RF4180 PowerStar transmit module combines RFMD's patented PowerStar integrated power control technology enhanced with the addition of power flattening technology and integrated battery-voltage tracking to provide a complete power control system.
RFMD's automatic battery-voltage tracking circuit prevents the power control loop from reaching saturation, thereby preserving handset switching spectrum at low battery voltages.
RFMD's power flattening circuitry significantly reduces current and power variation into nonideal loads (also known as "antenna mismatch"), resulting in shorter handset development time and more robust handset performance.
The RF4180 includes an electrostatic discharge (ESD) filter to provide ESD protection at the antenna port and is designed to minimise loss, providing maximum efficiency at rated output power.
According to Paul Augustine, General Manager of RFMD's Components Solutions Business Unit: "The RF4180 provides handset manufacturers high efficiency and improved performance in a cost-competitive, reduced size transmit module architecture".
"This results in improved battery life and talk time as well as reduced thermal dissipation, all of which are key metrics in the development of emerging market handsets".
"RFMD will continue to focus on solving our customers' complex RF challenges, as we introduce additional innovative architectures and design techniques that lower costs, ease implementation, reduce size and accelerate time to market".
The RF4180 is Pb-free and complies fully with the RoHS Directive.
The RF4180 is currently available for US $1.12 in quantities of one million pieces.
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