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Re: Lora point2 point

PostPosted: Fri Feb 02, 2018 2:18 pm
by Sukuri
Hi,

Can I know the gain of the SMA antenna that comes with RFM95?

Re: Lora point2 point

PostPosted: Fri Feb 02, 2018 4:36 pm
by bengchet
Hi,

It is 3 dBi gain.

Re: Lora point2 point

PostPosted: Fri Feb 02, 2018 4:39 pm
by Sukuri
bengchet WROTE:Hi,

It is 3 dBi gain.


much appreciated, Thanks :)

Re: Lora point2 point

PostPosted: Sat Feb 03, 2018 10:40 am
by Sukuri
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?

Re: Lora point2 point

PostPosted: Wed Feb 07, 2018 2:28 pm
by ober
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.