433MHz quarter-wave length antenna: longer is better?
Oct 5, 2014 · My problem is that even though most blogs and Google searches for these modules use a quarter-wave length antenna (roughly 17.2cm), my transmission is worse than when I use a longer antenna. When the antenna is longer than 30 cm (close to 1/2 wave length) I actually get better reception at longer ranges. (7 meters vs 14 meters)
What 433Mhz antenna should I get? - Arduino Forum
Dec 28, 2015 · Hey Guys, I'm currently making a wireless weather station and I'm using these (433Mhz-RF-transmitter-and-receiver-kit) for transmitting data from an Arduino Uno to a Arduino Micro. Everything works great, but I need to add some antennas to the transmitter and receiver to get better range. And I was wondering if these antennas are any good for this purpose? …
Design rf trace antenna 433MHz + 315MHz on pcb
Texas Instruments has an excellent application node on antenna design. Antenna design from scratch is not a trivial exercise and if you don't have experience or access to expensive modeling software, you'd be best using a proven reference design. There are probably countless other reference designs for a 433Mhz and 315Mhz PCB antenna.
433Mhz Remote Control Antenna Selection - Electrical …
The antenna design process was actually pretty empirical (which isn't too surprising when your antenna is just a piece of wire), there were often cycles of test/cut shorter by 1cm/repeat during the design process. The antenna was just a quarter-wave whip with ground plane or a long trace on the board to act as the other side of the dipole.
433mhz - which antennas is better for 433 Mhz 30dbi LoRa …
May 14, 2021 · \$\begingroup\$ your question makes no sense: Antennas don't have a range, and your antenna smith chart tells us nothing about your system – neither impedance of your device (which quite likely isn't very close to what you need, anyway, so you'll need matching anyways, so the smith chart really doesn't matter much, if at all, just tells you what kind of matching circuit …
wireless - Increase range of 433MHz remote sensor - Electrical ...
For maximum range you want to use an antenna of the proper length of 1/4 * lambda, at 433 MHz this comes to 17 centimeters. It is best to stretch out the antenna to its maximum length but it will also work when coiled up a bit.
rf - 433MHz Antenna PCB Trace Design - Electrical Engineering …
Sep 28, 2023 · The antenna connection is done using a PCB trace (42[mils] wide, 185[mils] first section, 240[mils] second section) with a PI network. This means that from the module pin to the SMA connector the trace is discontinued and was connected by a zero ohm resistor.
rf - 433mhz micro directional antenna design - Electrical …
Jun 18, 2015 · Even a shortened loaded yagi type antenna won't fit in your box. About the smallest, efficient, directional antenna I can think of would be the Moxon design, but even that is too big for your application, by a great amount. Your best bet would probably be to just use a standard "Rubber Ducky" antenna mounted to a BNC fed through the box.
433MHz PCB Antenna Design - Project Guidance - Arduino Forum
Feb 21, 2023 · Antenna issues for 433mhz transmitter. Project Guidance. 31: 2884: May 5, 2021 433 MHz Antenna Options.
rf - 433MHz receive circuit with two antennas? - Electrical …
Dec 1, 2024 · First of all, a bit of context - the receiver in question is a CAME gate opener, that receives commands from 433MHz remotes (like CAME models TOP432/TOP434). As is typical with such devices, the receiving antenna was located on a signal light installed inside of the gate.