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Bandwith of antennas
Hi. Is there a standard way to measure antenna bandwith? Is it within 3dB
down of maximum gain, or is it between SWR limits? I'm looking at an FM receiving yagi that is advertised as covering the frequency range 87.5 - 108 Mhz. And I'm wondering what this means. Is the received signal going to be 3dB down at the band edges or what? I notice that there are commecial yagis (that are probably suitable for transmission) that have 150-174 Mhz in their description. Yet they are stated as having a bandwidth of say 1.3 Mhz. What's the deal here? |
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