# ANTENNA External Circuit

**URL:** <https://community.sparkfun.com/t/antenna-external-circuit/47297>\
**Category:** Development Boards\
**Created:** [April 16, 2024, 11:16am UTC](https://community.sparkfun.com/t/antenna-external-circuit/47297 "2024-04-16T11:16:02Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![mahmoud\_ayman](https://avatars.discourse-cdn.com/v4/letter/m/c67d28/32.png) [@mahmoud\_ayman](https://community.sparkfun.com/u/mahmoud_ayman)\
**Post date:** [April 16, 2024, 11:16am UTC](https://community.sparkfun.com/t/antenna-external-circuit/47297/1 "2024-04-16T11:16:02Z")

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Hello, I am looking to make my external antenna circuit for “UBLOX MAX - M10” module , i got all electornic component for the antenna circuit as you see in the image , i am just confused to choose a suitable RF antenna for my circuit so how can i choose a suitable antenna for my circuit and or if anyone has a recommendation for a suitable one for my circuit and “UBLOX MAX - M10” module.

 ![2-pin antenna supervisor design.png](https://canada1.discourse-cdn.com/sparkfun/original/3X/b/c/bc009847af8a002c59c90eb7dc3c4b28e2468ab0.png)

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**Author:** ![clive1](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/clive1/32/6396_2.png) [@clive1](https://community.sparkfun.com/u/clive1)\
**Post date:** [April 16, 2024, 5:10pm UTC](https://community.sparkfun.com/t/antenna-external-circuit/47297/2 "2024-04-16T17:10:46Z")

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Haven’t you asked this already several times here, could you have perhaps continued one of those posts?

Here you want an active antenna, say like the ANN-MB which would work via the 2.5 to 3.3 V DC Bias on the RF Feed.

The circuit gates the voltage output by VCC\_RF using the LNA\_ENA pin

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**Author:** ![mahmoud\_ayman](https://avatars.discourse-cdn.com/v4/letter/m/c67d28/32.png) [@mahmoud\_ayman](https://community.sparkfun.com/u/mahmoud_ayman)\
**Post date:** [April 16, 2024, 8:07pm UTC](https://community.sparkfun.com/t/antenna-external-circuit/47297/3 "2024-04-16T20:07:52Z")

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so ANN-MB represents the antenna schematics shape in the image only? or it has it circuits on the chip?

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**Author:** ![YellowDog](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/yellowdog/32/1782_2.png) [@YellowDog](https://community.sparkfun.com/u/YellowDog)\
**Post date:** [April 17, 2024, 8:53am UTC](https://community.sparkfun.com/t/antenna-external-circuit/47297/4 "2024-04-17T08:53:21Z")

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There are additional circuits in the antenna. The image doesn’t know what antenna you will be using so those circuits are not pictured.