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Last activity 2017-08-03 12:08:18 +0200 by vidal

Antenna tuning with chipset antenna

Hello,

I developed a Nordic board with 2450AT18B100 chipset antenna. I follow the design of Solar Powered Sensor Beacon.

http://infocenter.nordicsemi.com/inde... I test it and it works fine, but I want to tuning the antenna in order ... (more)

81
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Last activity 2017-04-21 10:49:19 +0200 by MVR

making Tune instead of Beep using Bizzer with PWM library

i have added pwm into proximity profile example and now i am able to make beep using buzzer with pwm library.Now i want to make some sort of Tune instead of beep.

Can any one help!....Thanks.

146
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1
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Last activity 2017-02-09 13:39:48 +0200 by Kristin flag of Norway

Regarding antenna tuning and PI networks

Hi, I'm working on a design with nRF52832 + chip antenna. I'd like to add a PI network to be able to tune the antenna before production.

I'm working with this antenna: http://www.johansontechnology.com/dat...

The ... (more)

296
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1
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1
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Last activity 2016-07-04 13:51:58 +0200 by Øyvind Karlsen flag of Norway

Antenna Tuning

Hi, i am going to tune my PCB meander antenna by soldering center conductor of semi-rigid coax cable directly on to the coplaner wave-guide trace and outer conductor on to the ground. Can somebody here please suggest me the semi-rigid ... (more)

274
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3
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1
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Last activity 2016-07-04 13:48:18 +0200 by Øyvind Karlsen flag of Norway

Tuning provisions for Meander Antenna?

Hi, i am designing a board using balun in it. Also, i am going to use meander antenna of nordic dongle(reference image is attached). As i can see, there is no RF coplaner waveguide strip but there are RF ... (more)

507
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2
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Last activity 2016-03-03 17:53:41 +0200 by nick

NRF8001 antenna tuning

Hello!

I've developed a board with NRF8001 module mounted on it. Antenna on the board is much longer than in reference designs, so I can change the length. I also can add shunt capacitor/inductor. The problem is that ... (more)

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Last activity 2016-01-15 11:08:56 +0200 by concept

nRF52 NFC antenna and its equivalent inductance

Hi,

We decided to add NFC functionality to our nRF52 open source sensor beacon design, RuuviTag: http://ruuvi.com

I would like to ask your opinion about the antenna design, because Nordic hasn't published (correct me if wrong) any ... (more)

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Last activity 2015-02-03 11:11:15 +0200 by Asbjørn flag of Norway

PCB Antenna. Tuning not necesary

Hello,

I am designing a board based on the SoC nRF51822. Since this is a homemade project I do not have lab equipment so I can not measure antenna impedance and therefore tune it. I found this design note from ... (more)

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