QCVN 99:2015/BTTTT Figure B.2 Test model with two test antennas – Test the parameters of EUT Adjust the incoming signal power to EUT Measuring process using substitution antenna B.3. Requirements for test B.3.1. Measurement distance In the open measurement space or in the anechoic chamber (non-reflective room) measurement distance in Figure B.1 and Figure B.2 must make sure the antennas on both sides on the radio transmission line must in the electromagnetic field in the remote area of the remaining antenna. This distance d must satisfy 3 following conditions: , , , 2. ( + ) , > 5. + > 2. , à > 38
QCVN 99:2015/BTTTT Figure B.2 – Test model with two test antennas Test the parameters of EUT Adjust the incoming signal power to EUT Measuring process using substitution antenna B.3. Requirements for test B.3.1. Measurement distance In the open measurement space or in the anechoic chamber (non-reflective room) measurement distance in Figure B.1 and Figure B.2 must make sure the antennas on both sides on the radio transmission line must in the electromagnetic field in the remote area of the remaining antenna. This distance d must satisfy 3 following conditions: > 2. ( , + , ) , > 5. , + , à > 2. 38
QCVN-99-thiet-bi-vo-tuyen--toc-do-TB.DOCX