Xilinx, TI and Skyworks jointly demonstrate CFR and DPD IP

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This article is compiled from Xilinx blog


The evolution of wireless standards has seen significant improvements in spectral efficiency and data rates, as shown in the table below. New and complex modulation schemes and increased radio bandwidth are enabling peak data rates of up to 1 Gb/s for sub-1 GHz wireless access.


image.png


However, due to the characteristics of LTE and 5G waveforms, the improvement in spectral efficiency comes at the expense of reduced radio energy efficiency. In order to achieve higher spectral efficiency or more data bits, a peak-to-average power ratio (PAPR) is generated, as shown in the figure below. Among this power source, the average power consumption of the power amplifier is the worst. Currently, wireless landlines consume more than 50% of radio energy and are the main driver for mobile network operators, with their size, weight and operating costs all depending on wireless network operators.


image.png


Xilinx provides highly adaptable IP to solve energy efficiency challenges in wireless communications. The IP can be configured and scaled to address a wide range of use cases from micro base stations to massive MIMO to high-power macro radios. Power amplifier technology is also evolving to support wider bandwidths and take advantage of the latest semiconductor technology. The ability to adapt and track the latest radio requirements is a key benefit of this approach. Xilinx wireless platforms (chips and IP) can scale and adapt for faster time to market, providing the lowest total cost of ownership for mobile network operators.


Below is a demonstration video of Xilinx's latest crest factor reduction (CFR) and digital pre-distortion (DPD) IP, paired with an RF transceiver from Texas Instruments and a 28dBm high-efficiency PA from Skyworks. This line is a typical configuration for a small cell base station, which can support up to four antennas. Here we see how Xilinx's adaptive RF IP can be easily extended to achieve 100MHz and 200MHz bandwidth performance for the same line.


image.png


Texas Instruments AFE7769 RF Transceiver


The AFE7769 provides four transmit, four receive, and two observation receive paths for wideband RF applications. Each transmit and observation path can support up to 600 MHz signal bandwidth, while each receive path provides 200 MHz of high-performance signal bandwidth.


image.png

feature


Low power, zero-IF transceiver


4T4R2F


Output RF up to 6 GHz


Up to 600 MHz Tx bandwidth


Up to 200MHz receive RF bandwidth


Feedback Path


DPD FB (up to 600 MHz bandwidth)


200MHz bandwidth third-order DPD correction


8x 29.5 Gbps JESD204B/C transceivers


17x17mm BGA package, 0.8mm pitch


SKY66318-2128dbm high efficiency power amplifier


The device uses 200 MHz bandwidth 5G signals in the 3300-3700 MHz frequency range to achieve ACLR compliance and high efficiency. It is a member of Skyworks' family of high-efficiency power amplifiers for micro base stations.


image.png

feature


Frequency range 3300-3700 MHz


Wide instantaneous signal bandwidth: 200MHz


High efficiency


High linearity: 3GPP compatible with 200MHz 5G, 8.5dB PAR signal


High gain


Integrated enable on/off function


Single power supply voltage: 5.0V


Compact (16-pin, 5 x 5 x 1.3 mm) package


Keywords:Xilinx Reference address:Xilinx, TI and Skyworks jointly demonstrate CFR and DPD IP

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