Test Report BLF574 174-230MHz DVB-T Demo #842 CA-123-08 Scott Blum RF Application Lab Cumberland, RI.

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Presentation transcript:

Test Report BLF MHz DVB-T Demo #842 CA Scott Blum RF Application Lab Cumberland, RI

Introduction NXP has introduced a new powerful part to its 50V portfolio, the BLF574 This report shows how 100W of DVB-T power can be generated in board space smaller than 2” x 4”. Efficiencies greater than 31% are achieved at 100W DVB-T. The gain is 25dB at 100W.

Performance Summary Frequency (MHz) Gain (dB) Efficiency (%) ACPR (dBc) Return Loss (dB) 2 nd Har (dBc) Performance is for 100W DVB-T ACPR measured at 4.3 MHz break frequency (see Excel files)

Layout

Demo Form Factor Circuit is only as wide as the transistor package itself

DVB-T Gain and Efficiency

DVB-T ACPR

2 nd Harmonic Performance

Files To use the signal, save the Signal Studio file as a.txt file, or an.scp file. Load these as a ‘settings file’ within Signal Studio.

Signal information The signal was generated with Agilent’s Signal Studio and an Agilent ESG4438C signal generator The settings were OFDM 64QAM 8k mode 8MHz signal Crest Factors as calculated from Signal Studio –10%3.66dB –1%6.48dB –0.1%8.28dB –0.01%8.94dB –0.001%9.1dB –0.0001%9.1dB