But then you want to get into radio frequency details. In this case there are many concepts to be understood, so I advise you to read some documents. https://simplewifi.com/pages/antenna-basics https://support.huawei.com/enterprise/br/doc/EDOC1000077015/cb29154d/antenna-gain But in this case, I advise you to focus on what the datasheet informs, which in this case is that the maximum gain for 2.4Ghz is 3 dBi and 5Ghz is 5.7 dBi.
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