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90 degree hybrid vs 180 degree hybrid-Difference between 90 degree hybrid and 180 degree hybrid

This page on 90 degree hybrid vs 180 degree hybrid describes difference between 90 degree hybrid and 180 degree hybrid. Both of these RF devices are used to combine and split the power equally on two ports. Figures below depicts hybrids used as power splitter. Refer Wilkinson RF Power Divider Design➤ and Difference between RF Power Divider Vs Power Combiner➤.

90 degree hybrid

90 degree hybrid

The device 90 degree hybrid will have signals at P2 ans P3 ports; which are 90 degree out of phase. The figure-1 depicts the construction of 3dB hybrid using microstrip line. It also mentions symbol of 90 degree hybrid splitter. As shown port 1 is input port, port 2 is direct output , port 3 is coupled output and port 4 is isolated port.

180 degree hybrid

180 degree hybrid

The device 180 degree hybrid will have signals at P2 ans P3 ports; which are 180 degree out of phase. The figure-2 depicts the construction of 3dB hybrid using microstrip line. It also mentions symbol of 180 degree hybrid splitter. As shown port 1 is input port, port 2 is direct output , port 3 is coupled output and port 4 is isolated port.

Following are the specifications which are to be considered while selecting the right 90 degree or 180 degree hybrid for your application:
• Frequency Range of Operation
• Isolation (dB)
• Insertion Loss(dB) between ports
• Phase unbalance(degree)
• Amplitude unbalance(dB)
Also refer Power Divider Calculator➤➤

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