How to Design and Build a 70cm DIY Loop Antenna (EP37)

electronics unmessed
electronics unmessed
4.1 هزار بار بازدید - 2 سال پیش - This video is about building
This video is about building a loop antenna for the 70 centimeters amateur radio band. What I particularly like about this antenna is that it implements a bandpass and a powerful antenna at the same time. The principle of this antenna is actually very simple: A ring with the circumference of one wavelength is excited with its resonant frequency and thus acts as a filter and antenna at the same time. Since this type of loop antenna has a fairly high radiation impedance, a suitable matching network is needed for it, which is not easy to calculate. That's why we at “electronics.unmessed” have developed a dimensioning tool based on EXCEL: it allows you to design such an antenna for different materials and for an arbitrary frequency band. ► PayPal - you can support my channel directly here: paypal.me/acamediacon 0:00 Teaser - Resonant Loop 0:23 Advantage of the Loop 1:10 Matching 2:00 Materials 2:45 Calculating the Layout 9:33 Antenna Assembled 10:30 Playing with Tolerances 11:40 Reflection Measurement 14:03 Insights & Next Steps ► Affiliate links: My new equipment: amzn.to/3J8u6gY Antenna and RF Experiments: ***Arduino Nano: amzn.to/483TDm5 ***Original Arduino UNO: amzn.to/3NxDHjK ***24 NeoPixel Ring: amzn.to/48o7Ji4 ***Decent Potentiometer Knobs: amzn.to/3uZaasO ***editronic ALU Housing: amzn.to/3uZcDDA ***SMA T-Junction: amzn.to/41J8TTj ***SMA Connectors Plugs: amzn.to/4asZp26 ***LoRa Module Arduino: amzn.to/3TuxV6s ***NanoVNA: amzn.to/3NxC71i ***AD8318 RF Sensor: amzn.to/48GodSX *** LiIon Charge Controller: amzn.to/3RB9ZMe ***SMA Jumper Cable: amzn.to/48f2T6Q ***30dB SMA Attenuator: amzn.to/48mPg5r ***4000mAh LiIon Battery: amzn.to/3TtrMqY ***Housing Plastic: amzn.to/3TrUOHt ***Step-Up Module: amzn.to/477wGgq ***USB Micro Extension: amzn.to/3tnhrCi ***N-Plugs: amzn.to/3v5iszs ***16 NeoPixel Ring: amzn.to/3RwhOCR ***N to SMA Adapter: amzn.to/3ROX0re ***Wires Set: amzn.to/3Nx56m7 ***Quality Potentiometer: amzn.to/48pzCq6 ***Switch: amzn.to/3vcdl0h General components and accessories: *** Jumper Cable: amzn.to/3TpQJ6N ***Electrolyt Caps Set: amzn.to/4ao41Xw ***Heat Shrinks: amzn.to/41wGHTw ***Lab Power Supply 30V/10A: amzn.to/41uLMvn ***Resistors Sortiment: amzn.to/3tkuuVf ***Ceramic Capacitors: amzn.to/476FFib ***Screws Sortiment: amzn.to/3TtpNmw ***Helping Hand: amzn.to/3TuUfgj ***Screws Set: amzn.to/48kgsBO ***Soldering Iron: amzn.to/3RwPH6e ***USB Power Tester: amzn.to/3GOUivG ***Trimmer Sortiment: amzn.to/48pev70 ***LEDs Set: amzn.to/476ks82 ***Helping Hand: amzn.to/3TuUfgj *** We are participating in the Amazon affiliate program. The marked links are so-called affiliate links. If you click on the link and make a purchase via this link, we will receive a commission from your purchase without changing the price. ► Playlists: All videos:    • All Videos   Introduction and background:    • About the Channel   ► Download free tools and materials: github.com/electronics-unmessed/EP37
2 سال پیش در تاریخ 1401/10/29 منتشر شده است.
4,173 بـار بازدید شده
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