Author Topic: Alternative PCB Dipole Designs (433, 868, and 915MHz)  (Read 28747 times)

CarlyAzuma

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Re: Alternative PCB Dipole Designs (433, 868, and 915MHz)
« Reply #60 on: August 28, 2020, 02:00:50 PM »
Hello...the input impedance of a short dipole will be capacitive in series with a small radiation resistance. There's no basic difference between printed and discrete wire design. In a printed dipole design, you may want to integrate a matching network on the PCB. Because the room is apparently limited, this should be imagined as a lumped network.

Slople

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Re: Alternative PCB Dipole Designs (433, 868, and 915MHz)
« Reply #61 on: October 15, 2020, 07:27:23 AM »
I am not able to order from pcbs.io - I wanted to order the 433mhz-version and tune it to 868, but no luck. There's always a payment-error on the page, no matter if I use PayPal or CC.
I need to connect the antenna using a u.fl to my transceiver, but my friends antenna analyzer has an SMA-connector I suppose. Is the right way to do this to solder the coax-cable with u.fl to then antenna and connect it via an adapter to the analyzer? Do we need to compensate for the extra length of the adapter to be precise?