Omnidirectional 868 MHz antenna
时间：04-05
整理：3721RD
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I am looking for omnidirectional 868 MHz antenna that comes with tilt option and has reverse SMA connector. It seems there are only two options to choose from: W1063 and ANT-868-CW-HWR-RPS.
The first is made by well-respected manufacturer, but it seems to be designed to be primarily used with 900 MHz rather than 868 MHz. Datasheet does not talk about frequency dependency vs VSWR. I expect VSWR to be very high for 868 MHz. If that is the case, then I am left only with ANT-868-CW-HWR-RPS.
Can anyone comment on these both antennas? Is there anything better than those two?
The first is made by well-respected manufacturer, but it seems to be designed to be primarily used with 900 MHz rather than 868 MHz. Datasheet does not talk about frequency dependency vs VSWR. I expect VSWR to be very high for 868 MHz. If that is the case, then I am left only with ANT-868-CW-HWR-RPS.
Can anyone comment on these both antennas? Is there anything better than those two?
My interpretation of the data sheet is that VSWR < 2 spec applies to the frequency range 868 – 928 MHz. That would be reasonable, lambda/4 antennas are not so very narrowband.
Datasheet of the second antenna has this graph. Based on it, it would be hard to expect VSWR to be less than 2 within that broad range (868 – 928 MHz).
