Abstract
This paper gives a detailed description of design, development and testing of a 400W RF power meter for RF amplifier. The power meter has a broadband frequency response in the band 5MHz–30MHz. The coupling, insertion loss and directivity of the power meter are measured. It has a directivity of better than 30 dB in the band 5MHz–30MHz. The power meter is able to measure forward power and reflected power at the same time. The response of the power meter is found be linear in the power range of 100W–400W with a accuracy of < 5%.
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