RF Micro Devices (RFMD) has announced the introduction of the RF4180 PowerStar dual-band GSM/GPRS transmit module to its product line-up.
The RF4180 leverages RFMD’s power control capabilities to deliver reduced solution size, simplified transmitter design, excellent harmonic performance and ease of implementation. It is a dual-band transmit module featuring two symmetrical receive ports, 50 Omega; matched input and output ports and GSM/GPRS Class 12 compliance. The module minimises the requirement for PA-to-antenna matching. When mated with leading cellular baseband system-on-chip (SoC) solutions, it delivers a highly integrated radio solution capable of accelerating time to market cost-effectively.
The RF4180 incorporates power flattening technology and integrated Vbatt tracking to provide a complete power control system. The automatic Vbatt tracking circuit monitors battery voltage and prevents the power control loop from reaching saturation. RFMD's power flattening circuitry significantly reduces current and power variation into non-ideal loads (also known as 'antenna mismatch'), resulting in shorter development time and more robust performance. The RF4180 includes an electrostatic discharge (ESD) filter to provide ESD protection at the antenna port and is designed to minimise loss and provide maximum efficiency at rated output power.
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