Frequently Asked Questions (FAQ)
for Power Dividers
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| 1) Why does your 3-way power divider/combiner have four RF connectors? |
| Standard power divider terminology says that an X-way power divider can divide your input signal into X copies. So, a 3-way divider has 1 input and 3 outputs for a total of 4 connectors. |
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| 2) How much isolation does a resistive power divider have? |
| Due to their symmetric design, the isolation of a resistive power divider is equal to its insertion loss. The insertion loss between any of the ports is equal. Example: A 2-way resistive power divider/combiner has 6dB of insertion loss from port to port. |
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| 3) Should I use a resistive or reactive power divider/combiner? |
| Reactive power divider/combiners have lower insertion loss and better isolation than resistive power divider/combiners. If your frequency range allows you to use a reactive power divider/combiner, then JFW recommends this option. |
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| 4) I need a custom power divider/combiner designed. How much are your typical NREs (non-recurring engineering charge)? |
| JFW does not charge NREs. Please send you custom requirement to sales@jfwindustries.com. |
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| 5) What are the pros and cons of reactive power divider/combiners versus resistive power divider/combiners? |
| Reactive Pros | Resistive Pros | | High isolation | Wide frequency band (and works at DC) | | Low insertion loss | High power capabilities | | Reactive Cons | Resistive Cons | | Narrow frequency band | High insertion loss | | Lower power | Low isolation |
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