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Supports all 3G and 4G LTE bands LTE signals, available in more than 20 distinct bands across the world from various carriers, provide high-speed data transmission that need a high peak-to-average ratio (PAR), and generate higher transmit power, which reduces the efficiency of RF power amplifiers and creates extra heat.
However, this creates large variations in the instantaneous output power, a condition described as high peak-to-average ratio (PAR).
The PowerDPD solution offers the following features: reduces the peak-to-average ratio (PAR) for single-carrier and multi-carrier signals; improves adjacent channel leakage ratio (ACLR) without the need for separate chipset or DSP; enables 45% efficiency using Axis Power Amplifiers; reduces cost for multi-channel MIMO systems; supports single and multicarrier environments; can be used in burst mode systems such as TDD-LTE and TD-SCDMA, the company said.
In addition, the MRFE6VP8600H easily tolerates the out-of-band reflective load conditions caused by highly selective channel filters and the high peak-to-average ratio (PAR) characteristic of digital transmission schemes employing higher-order modulation techniques such as DVB-T (8k OFDM).
Upcoming mobile WiMAX applications are expected to require average orthogonal frequency-division multiplexing (OFDM) output power between 10 and 25 watts with peak-to-average ratios (PAR) as high as 12 dB.
Ability to set peak-to-average ratio and back-off thresholds in order to warn the user if the rms and/or peak power in a particular stage approaches the 1-dB compression point
37 W average power with input signal peak-to-average ratio (PAR) of 9.
The high peak-to-average ratio of these modulated signals causes PAs (power amplifiers) to be backed off from their maximum transmit powers significantly, thereby making the PA less efficient.