Quectel RM510Q-GL - IF Isolation; Mmwave and Sub-6 Ghz Antennas Coexistence; Mmwave if Port Mapping

5G Module Series
RM510Q-GL Hardware Design
RM510Q-GL_Hardware_Design 56 / 88
5.1.2.3. IF Isolation
IF isolation requirements for proper operation at 6–10 GHz operating frequency are as follows:
Total system isolation between an IF path (combined PCB, cables, connectors, and so on) and the
connected antenna module should be more than 35 dB, and the isolation between an IF path and other
antenna modules should be more than 25 dB.
5.1.2.4. mmWave and Sub-6 GHz Antennas Coexistence
Isolation between mmWave and sub-6 GHz antennas: > 20 dB
The following table shows the isolation requirements between IF cable and Sub-6 GHz antennas.
Table 33: Isolation Requirements between IF cable to Sub-6 GHz Antennas
5.1.3. mmWave IF Port Mapping
RM510Q-GL supports QTM525(power class 3) and QTM527(power class 1). IF port mapping as shown
below.
Table 34: mmWave IF Port Mapping
1.2–3.6 GHz
< 4 dB
6–10 GHz
< 7 dB (from the IFIC to the RFIC)
< 5 dB (from the RM510-GL to QTM525)
Range
Isolation Requirement
100 MHz – 1 GHz
75 dB
1–6 GHz
70 dB
6–10 GHz
65 dB
Group
QTM_Pon
RM510Q-GL
QTM527
QTM525
1
QTM0_PON
IFV4
QTM527-1_IF2 (V)
IF2 (V)
IFH1
QTM527-1_IF1 (H)
IF1 (H)