HF-VHF SWR & Power Meter is one of the essential gadgets in ham radio station. In this project, the focus is on getting a high dynamic range and wide band SWR/Power Meter. The targeted power handling capability is 1kW. The SWR meter is planned to be wide band, meaning single coupling circuit should operate from 0.5MHz to 150MHz.
To achieve higher power handling capability, the voltage and current transformer should have higher turns ratio. The higher turns ratio will result in higher leakage inductance and will have limited bandwidth. To enhance power handling and bandwidth, cascading of 2 transformers is done. The following is the scheme that is followed.
To achieve higher power handling capability, the voltage and current transformer should have higher turns ratio. The higher turns ratio will result in higher leakage inductance and will have limited bandwidth. To enhance power handling and bandwidth, cascading of 2 transformers is done. The following is the scheme that is followed.
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| SWR Coupler for 1:50 ratio and wider bandwidth |
Have you done any more work on this? I'm curious on how the bandwidth response is.
ReplyDeleteI haven't done much after this. Actually to test this I wanted to build a source and ended up doing different things :)
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