SC2200 Wideband Performance results with NXP A2I25D025N at 2.6GHz With and without RF delay
●PA information
◆NXP A2I25D025N, Doherty, LDMOS
◆Operating Frequency: 2100-2900 MHz, Frequency tested: 2660 MHz
◆Gain = ~29dB; Psat= P3dB= ~ 45dBm; Vdd=28V
◆NXP Driver used for testing: MMG20241H. Verygood linearity’s of the drivers are critical for wideband performance
■Test conditions
●Target performance: ACLR1 = -50dBc
●Compare performance with delay and without delay
◆Delay: SC2200-EVK2400 EVK, AnarenXDL15-3-030S 3nsec delay. RF delay has 5dB insertion loss at 2660MHz
◆No delay: modified SC2200-EVK2400 EVK, replaced delay by 4dB attenuation to maintain the same attenuation at 2.6GHz between RFIN and RFOUT
◆All data collected in ”Smooth Mode” with calibration 0.5 to 1dB above the targeted maximum PA output power. This was critical to achieve optimum performance.
◆RFIN, RFFB and RFOUT Peak Power within datasheet recommendations
■Performance summary for -50dBc ACLR target
●NXP A2I25D025N is a very wideband PA with high video bandwidth
●As the signal bandwidth increases, the RF delay line becomes more critical to compensate for PA memory effects and achieve optimum linearization performance
●With 3x20MHz, the delay line was critical to achieve -50dBc. Further PA optimization is required to minimize the memory effect and improve performance without delay line
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A2I25D025N 、 SC2200-EVK2400 EVK 、 XDL15-3-030S 、 MMG20241H 、 SC2200-EVK2400 |
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Technical Documentation |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2021/06/15 |
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633 KB |
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