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Motorola ships 'smallest' GSM, GPRS PA module

Posted: 11 Jun 2002 ?? ?Print Version ?Bookmark and Share

Keywords:mmm5062? power amplifier module? gsm power amplifier? gprs power amplifier? quad band amplifier?

Designed using the company's High Impedance Power Amplifier (HIIPA) packaging and enhancement-mode (E-mode) GaAs wafer process technologies, the MMM5062 power amplifier (PA) module from Motorola Inc.'s Semiconductor Products Sector measures 7-by-7-by-1.11mm and is claimed to be the world's smallest quad-band GSM/GPRS single power supply PA.

The module uses the HIIPA packaging technique to provide a 50-ohm solution without the need for additional external components. The 50-ohm impedance matching network at the output of the die uses capacitors that are integrated onto the die and inductors that are implemented by wire bonds of variable lengths.

The E-mode technology provides a low off-state leakage current and eliminates the drain-supply switch required for depletion-mode pHEMT and MESFET devices. The company also claims that the technology further reduces cost and size by eliminating the negative voltage generator and additional passive components.

Designed to support the GSM850/900, DCS1800, and PCS1900, the module is also engineered for Class 10 GPRS operation.

In full quad-band applications, it provides a typical output power of 35.2dBm from an input of -1dBm and an added efficiency of 53 percent at a frequency band of 824MHz to 915MHz. For the HF band (1.71GHz to 1.97GHz), the module provides an output power of 33.8dBm from an input of 2dB and a power added efficiency of 44 percent.

In addition, the MMM5062 provides a typical cross band isolation of -28dBm at maximum power.





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