Effects of a driver's adjacent channel leakage ratio(ACLR) on the total ACLR have been tested in order to investigate the relationship between the ACLR of a driver and a DUT. The ACLR test results show that the degradation in ACLR is 4.1 ～ 4.5 dB when the both ACLR values are the same. If the difference of ACLR values between a source and a DUT is 12 12.5dB, then there is no degradation in total ACLR.
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