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Fig. A.3
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Apertif FEBF mixer and sub-sampling scheme for 300 MHz beams, from e.g. f0 = 1250 MHz to f1 = 1550 MHz. The RFBW = 400 MHz. The fLO2 = 2800 MHz and is fixed. By setting fLO1 appropriately, the flow maps to 0 Hz and f0 to 50 MHz.
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