Lora point2 point

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Re: Lora point2 point

Postby Sukuri » Fri Feb 02, 2018 2:18 pm

Hi,

Can I know the gain of the SMA antenna that comes with RFM95?
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Re: Lora point2 point

Postby bengchet » Fri Feb 02, 2018 4:36 pm

Hi,

It is 3 dBi gain.
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Re: Lora point2 point

Postby Sukuri » Fri Feb 02, 2018 4:39 pm

bengchet WROTE:Hi,

It is 3 dBi gain.


much appreciated, Thanks :)
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Re: Lora point2 point

Postby Sukuri » Sat Feb 03, 2018 10:40 am

bengchet WROTE:Hi,

It is 3 dBi gain.


How about the bandwidth?

Actually I'm looking for better antenna with higher gain. But I'm still new with antenna. So, still confused which antenna will match with this RFM95.
Only parameters I knew:

1) Gain. Higher gain will produce higher signal power
2) Impedance. I think it should be 50 ohm
3) Bandwidth. I'm not sure which one is better but I think 125kHz should be ok

Correct me if I'm wrong or any suggestion antenna type?
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Re: Lora point2 point

Postby ober » Wed Feb 07, 2018 2:28 pm

Sukuri WROTE:Only parameters I knew:

1) Gain. Higher gain will produce higher signal power
2) Impedance. I think it should be 50 ohm
3) Bandwidth. I'm not sure which one is better but I think 125kHz should be ok

Correct me if I'm wrong or any suggestion antenna type?

For antenna gain, please read this articlehttp://www.jpole-antenna.com/2014/03/28/antenna-gain-explained/.... It will not boost the RF power, it is relative gain.
Bandwidth of antenna refer to the range of frequency it supports, not the modulation bandwidth.
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