Robert Patterson
Newbie level 3
I am hoping to get some help with an issue I am currently having on a new design I am working. The design incorporates the following:
434 MHZ Transceiver
WIFI module
switching power supply
other components.
The issue I have is as follows:
(1) The noise floor I measure on the RRSI line of the receiver is around 450 mv without the WIFI module on.
(2) When I use a chip antenna on the WIFI module the noise increases about 20 mv during WIFI transmission (acceptable)
(3) When I use a patch antenna (cnnected with small coax cable) the RRSI level increases to about 550 to 600 mv (about a 6 dB increase in the noise floor)
My main question is how to reduce the noise floor on the reciever when I use the patch antenna for WIFI and why is it occuring with only using a coax cable.?
The product is mounted inside a small plastic enclousre.
Robert Patterson
Any help appreciated
[email address deleted]
.
434 MHZ Transceiver
WIFI module
switching power supply
other components.
The issue I have is as follows:
(1) The noise floor I measure on the RRSI line of the receiver is around 450 mv without the WIFI module on.
(2) When I use a chip antenna on the WIFI module the noise increases about 20 mv during WIFI transmission (acceptable)
(3) When I use a patch antenna (cnnected with small coax cable) the RRSI level increases to about 550 to 600 mv (about a 6 dB increase in the noise floor)
My main question is how to reduce the noise floor on the reciever when I use the patch antenna for WIFI and why is it occuring with only using a coax cable.?
The product is mounted inside a small plastic enclousre.
Robert Patterson
Any help appreciated
[email address deleted]
.
Last edited by a moderator: