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Model X3C07P1-03S
Rev C
2-Way Splitter for Doherty Power Amplifer
Hybrid coupler can be used in Doherty power amplifier to split the input power into the desired power ratio
and phase delay. In above symmetrical Doherty power amplifier (main and peaking amplifier delivers equal
amount output power at max drive condition), 3dB hybrid splits the input power into 1:1 ratio with 90 degree
phase difference.
When the peaking amplifier is off, or when peaking amplifier is dramatically different than main amplifier due
to bias, matching, difference between transistors, the 3dB hybrid coupler does not see equally unmatched
termination, the mismatch is then reflected not only to isolated port, but also shows up at input port as
return loss mismatch.
5dB hybrid splits the input power into 1:2 ratio with 90 degree phase difference. It can be used in
asymmetrical (1:2) Doherty power amplifier architecture as splitter. 5dB hybrid is also used in some
symmetrical Doherty power amplifier to compensate the gain difference between main and peaking
amplifiers. It is worth noting that 3dB and 5dB hybrid react differently to the termination mismatch, resulting
in different return loss at input port.
2-Way Splitter/Combiner Network
Input
* 50 ?
Termination
Amplitude and
Phase tracking
Devices
* 50 ?
Termination
Output
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(800) 411-6596
+44 2392-232392
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相关代理商/技术参数
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制造商:Anaren Microwave 功能描述:RF HYBRID COUPLER
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