Hello robertferanec
Ok. Thanks for your help....
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Thanks for your answer robertferanec .
This is the stackup that Nordic used on nRF52840-DK.
I tried to compute their width...Leave a comment:
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Hello robertferanec ,
But what should I consider the ground plane, since under antenna track there is a keepout polygon?
Should be...Leave a comment:
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Thanks for your answer robertferanec .
My doubt is what is the correct way to calculate the impedance for this layout?
I mean, what...Leave a comment:
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robertferanec Thank you for your reply.
The module is a Nordic Nrt52840. On the reference board they used a trace width 0.765mm.
...Leave a comment:
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Impedance Calculation for Bluetooth Antenna
Hello all,
I am designing a PCB with Bluetooth comunication. So I am using a ceramic chip antenna with 50 ohm impedance.
For the antenna... -
robertferanec do you think that using optocouplers on UART line to isolate the FT2232D circuit could be a good solution?
I think that I...Leave a comment:
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Hello all,
I made some tests. The GND output of my 230 VAC to 12VDC Power Supply it is not connected to EARTH pin of the input.
I am...Leave a comment:
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Should not have this connection between EARTH and GND? Could you talk a little more why is this a problem?
How can I have sure that there is no...Leave a comment:
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robertferanec this is the power adapter that I am using:
http://www.farnell.com/datasheets/25...9.1573914190-1...Leave a comment:
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Hello ypkdani ,
At the beginning I used varistors because I followed arduino uno schematic.
Now I am using TVS diodes (PGB1010603NRHF)...Leave a comment:
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robertferanec the problem shows up again.
I am working with solenoids to open a door. To activate the solenoids I am using a mosfet with a flyback...Leave a comment:
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ypkdani do you think that with a ceramic antenna is easy to make a device communicate properly by following manufacture instructions?
Thank...Leave a comment:
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Thanks for your answer ypkdani .
I know that if we use a pi matching circuit for the antenna, we can tune that components for the right impedance....Leave a comment:
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Antenna tunning/ matching circuit
Hello all,
I want to produce a device with Bluetooth and GPS, so I need to place an antenna on PCB (ceramic or PCB antenna).
I know...
Leave a comment: