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This 3 dB Hybrid Ring Coupler (0°/180°), also called a "rat-race coupler", is a high-power capable, four-port device optimized to sum two in-phase combined signals with essentially no loss or to equally split an input signal with no resultant phase difference between out and inputs. The fourth port is terminated.
But it is also possible to configure the hybrid ring coupler as a 180° phase-shifted output divider or to sum two 180° phase-shifted combined signals with almost no loss.
The fourth port is terminated.
Combine RF Power Amplifier:
So this is the right solution to combine power amplifiers up to 1000 Watts. To combine 2 Power amplifiers you will need 2 couplers.
All 3dB Hybrid Ring Couplers are deliverd including connection diagram.
Special tanks to Eene, PA3CEG for precious help calculation this ring hybrid, also thanks to Frank, PA2M who made the measurements reports. |
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3dB Hybrid Ring Coupler for 1296MHz and 2320MHz.
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