MultiMode 3x3 power amplifier modules increase talk times
May 11, 2010 // Jean-Pierre Joosting
Avago Technologies has announced ten new compact UMTS power amplifier modules that maximize handset talk time and extend battery life. UMTS Bands 1, 2, 4, 5 and 8 are supported.
The ACPM-520x PAMs are optimized to maximize the PAE at maximum RF powers by adjusting maximum output powers. These modules are intended to meet UMTS specifications. With multiple product lines, customers have the flexibility to choose the right products for their application.
All of the PAMs benefit from Avagos fifth generation CoolPAM technology that lowers quiescent current to 3.0 mA typically and adds a switchless active bypass mode for higher PAE at low output power levels. High efficiency at low power output has become an important design parameter for handset manufacturers since in urban and suburban areas with good cellular coverage handsets usually transmit at low power.
The PAMs feature PAE of 12 to 20 percent of maximum output power in bypass mode and 20 to 25 percent of maximum output power in mid-power mode, representing improvements over existing power amplifiers in the market. CoolPAM technology enables mobile handset designers to extend the usage time without an increase of battery capacity.
All ACPM500x and the ACPM-520x UMTS power amplifiers include a 20 dB directional coupler. The high directivity makes precise power control possible. For multi-band handsets, the internal directional coupling and isolation ports are available for daisy chaining. This simplifies system printed circuit board (PCB) layout.
The new power amplifiers are manufactured on advanced InGaP HBT (hetero-junction Bipolar Transistor) MMIC technology with proven state-of-the-art reliability, temperature stability and ruggedness.
The ACPM-500x power amplifiers series targets all OEMs and ODMS in the UMTS, CDMA and LTE handset and data card markets. The UMTS Forum reported recently that there are more than 500 million 3G/UMTS subscriptions worldwide, representing 10 percent of global mobile customers.All news
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