User's Manual

The following table describes the requirements for external antenna coupling systems.
Requirements for external antenna coupling systems
Component Property/demand Value/value range
Transmitter coupling
system
Return loss at all Tx inputs ≥ 19 dB
Isolation between Tx inputs ≥ 50 dB
between output and Tx
inputs
≥ 50 dB
Impedance at all Tx inputs 50 Ω
Input power per Tx input (mean value) according to the adjusted
transceiver power
Input power (total, mean value) according to the total of
the adjusted transceiver
power
Input power (total, peak value) (log
2
(number of trans-
ceivers) +1) x 3 dB +
output per transceiver
[dB]
Intermodulation products
of 3rd order (IM 3)
between Tx inputs
2 x 49 dBm @ 250 kHz > 85 dB
Intermodulation products
of 3rd order (IM 3) per Tx
input
2 x 47 dBm @ 10 kHz > 65 dB
Duplex filter (with
common Tx/Rx antenna)
Isolation between Tx and
Rx input
common Tx/Rx antenna:
0 dB antenna decoupling
≥ 80 dB
Intermodulation products
of 3rd order (IM 3)
2 x 46 dBm @ 250 kHz ≤ -150 dBc
Input power (total, peak value) according to the total
output from the trans-
mitter coupling system
Suppression of 2nd harmonic of all transmitters > 30 dB
Transmitting filter Attenuation in Rx band Separate Tx/Rx
antennas, assumed
antenna decoupling
25 dB
≥ 55 dB
Intermodulation products
of 3rd order (IM 3)
2 x 46 dBm @ 250 kHz ≤ -150 dBc
Input power (total, peak value) according to the total
output from the trans-
mitter coupling system
Safety regulations
Safety instructions and declaration of conformity > Safety instructions and declaration of conformity for North America
DIB-R5 flexibleTx
15Operation Manual 90DIBR5flexibleTxOM02 - 1.2