Power amplifier module includes IP linearisation
Axis Network Technology
Triple mode power amplifier module
Axis Network has introduced a triple mode power amplifier module and IP linearisation solution, offering a 45 per cent final stage efficiency for UMTS ETSI compliant 64QAM systems at 2.1GHz.
The solution uses just a power amplifier module and IP block resident in the transmitter chain FPGA.
As well as UMTS, this solution operates with CDMA and OFDM (DVB, WiMax and LTE) air interfaces.
The solution supports up to 30MHz of signal bandwidth and single and multicarrier signals for all modes.
Power amplifiers are at the heart of a wireless transmission system and traditionally consume the most significant portion of the energy used within conventional macro base stations.
Highly efficient power amplifiers are now allowing the substitution of macro base stations with compact high power remote radio heads (RRH).
Amplifiers with 45 per cent efficiency allow the design of convection-cooled RRHs capable of 2 x 25W of HSPA+ RF downlink power at 2.1GHz.
The Axis PowerDPD linearisation IP solution is available as an embedded net list for use in either Altera or Xilinx FPGAs.
It combines a crest factor reduction (CFR) block and digital predistortion (DPD) block to maximise the efficiency of the amplifier module while ensuring compliance to ETSI and FCC requirements.
The IP solution also provides carrier and image suppression when used with direct modulation schemes.
Dual channel (MIMO) amplifiers are available operating at 2.1, 2.3, 2.5 and 3.5GHz.
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