Power Splitter / Power Combiner
8Way RF Power Dividers

optimum broadband RF

8 Way N Type Power Divider Combiner Splitter

Type N Power Divider

DC passing all ports

RoHS 8 Way Power Divider Combiner Splitter, Type N Jack

RoHS N-Type Splitter

50 ohm coaxial conn

8-Way SMA RF Power Divider Combiner Splitter

SMA Power Divider

shielded CNC housing

RoHS 8 Way SMA Power Divider Combiner Splitter

RoHS SMA Power Splitter

DIVIDER / SPLITTERTheoretical Insertion Loss due to N-Way Power Split
  • N Way
  • 2 Way
  • 3 Way
  • 4 Way
  • 6 Way
  • 8 Way
  • 12 Way
  • 16 Way
  • 24 Way
  • 32 Way
  • Insertion Loss*
  • 3.01 dB
  • 4.77 dB
  • 6.02 dB
  • 7.78 dB
  • 9.03 dB
  • 10.79 dB
  • 12.04 dB
  • 13.80 dB
  • 15.05 dB
Formula for Insertion Loss due to N-Way Power Split: IL = 10 log (1/N-Way)
*Not true insertion loss as this power is recoverable.

8 Way Power Divider, Combiner, Splitter

0.698-2.700 GHz, 40 Watts, Type N & SMA Female (Jack) Connectors

Application Note

STOCK eight way power divider, power combiners are available with two connector styles, type-N female (jack) and SMA female (jack). Both models are optimized for broadband operation covering the frequency range from 0.698 to 2.700 GHz with unsurpassed electrical performance. These Wilkinson hybrid, 8 way, power divider, power combiners are reciprocal units that divide and combine signals with equal facility. Their microstrip construction will pass DC current to all ports for use in active systems.

In power dividing applications, the input signal is equally split into eight output signals, each down 9 dB from the incident due to the 1:8 power division. No power is actually lost from the power split; it is just allocated into eight amplitude and phase matched signals, thus a so called 9 dB insertion loss. True insertion loss of less than 1.3 dB max @ 2.7 GHz will be found at the output ports resulting from dissipation of small amounts of RF & microwave energy within the connectors and microstrip circuit. The output signals are isolated from each other by 22 dB minimum through the use of resistors that dissipate any power reflected back to the circuit caused by unequal or unbalanced output loads. The 40 watt maximum power rating of these power dividers is applicable when connected to matched output load VSWR of 1.2:1 or better. This

8-Way Power Divider Input Ratings
Into Matched
Load VSWR
In-Phase
0° Difference
180°
Out-of-Phase
1.2 : 1 40 Watts 40 Watts
2.0 : 1 40 Watts 40 Watts
VSWR = infinity (open or short) 20 Watts 4 Watts
8-Way Power Combiner Input Ratings
Input Signals 0° Phase
Difference
180° Phase
Difference
Coherent 8 X 5 Watts 8 X 0.5 Watts
Non-Coherent 8 X 1 Watt
Power Divider Frequency Applications
Public Safety Band 800 MHz Cellular
GSM 850 GSM 900
GSM 1800 GSM 1900
PCS 1900 L-Band
GPS W-CDMA-3G
TETRA RFID
IEEE802.11b/g ISM
Wi-Fi WiMAX
» click respective band for more information »

max power rating must be reduced when load VSWR increases and is unbalanced or out-of-phase from port to port. See 8 Way Power Divider Input Ratings Table (below left) for additional guidelines.

The situation with power combining is a bit more complex. While it is possible to sum eight input signals with no loss, this can only be accomplished if the input signals are coherent and identical in phase and amplitude. Such a case would be the eight way power splitting of a signal which is then recombined after amplification, provided the amplified signals are phase locked together. But outside this case, or cases of pure sine signals, or CW signals without any transmitted info, the combining of eight non-coherent signals will result in a minimum 9 dB loss (1/8th power ratio) plus the true insertion loss of the power combiner (1.3 dB max @ 2.7 GHz). Worst-case combining loss occurs with coherent signals 180° out-of-phase, where all power is dissipated. Because the combining loss is dissipated through the isolation resistors, the power handling and heat transfer capabilities of these resistors ultimately determines the max combiner power rating. See Eight Way Power Combiner Input Ratings Table (left) for additional information.

Contact INSTOCK Wireless for unique solutions to your high power combiner requirements and other custom features.

8-Way, Power Divider, Power Combiner Circuit

Eight-Way, RF Microwave Power Divider, Combiner, Splitter
Microstrip Circuit Passes DC Current All Ports

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