You can make a simple directional Wi-Fi Yagi antenna by assembling one driven element, a reflector behind it, and directors in front, all aligned on a support. The parts must be sized and spaced for the intended frequency: there is no single set of cut lengths that works for every Yagi. This guide explains the layout and a practical way to build from a matching template, without promising a range increase that has not been measured on your equipment.
How a Wi-Fi Yagi antenna works
A Yagi-Uda antenna uses one element connected to the radio feed and several unpowered elements that shape its radiation pattern. In the usual layout, the reflector sits behind the driven element; directors extend forward. Aim the director end toward the Wi-Fi device or area you want to connect to. The antenna is directional, so orientation matters.
Yagi performance depends on the complete geometry, including element lengths and spacing, conductor diameter, number of elements, boom, and reflector arrangement. The National Bureau of Standards discusses these design variables in its 1992 Yagi Antenna Design report, whose measurements were conducted at 400 MHz—not at Wi-Fi frequencies. Its measured results therefore should not be treated as performance data for a 2.4 GHz home build.
Choose one 2.4 GHz design and follow it as a set
For a straightforward DIY approach, use a template-based project such as bysy/wifi-yagi. Its instructions describe joining a printed template, forming an 18 AWG copper-wire square-loop driven element with a small feed gap facing the reflector, and soldering the feed and ground to the two ends. The reflector and directors are then cut and attached to a support. Use the template’s own dimensions and placement; the project README does not provide a readable dimension table in its text, so do not infer cut lengths from another antenna design.
#1 Best Overall
- Basic Specification:Frequency:2400-2483MHz;Max Gain:𝟐𝟓𝐝𝐁𝐢;Input Impedance:50ohms;Antenna Length:50CM;Cable Length:150CM;Connector Type:𝐑𝐏-𝐒𝐌𝐀,Gold-plated connector for easy plugging and unplugging;Material: Aluminum alloy;Features:𝐇𝐢𝐠𝐡 𝐆𝐚𝐢𝐧,𝐖𝐚𝐭𝐞𝐫𝐩𝐫𝐨𝐨𝐟,𝐋𝐨𝐧𝐠 𝐑𝐚𝐧𝐠𝐞,𝐇𝐢𝐠𝐡𝐥𝐲 𝐃𝐢𝐫𝐞𝐭𝐢𝐨𝐧𝐚𝐥.
- 𝐇𝐢𝐠𝐡 𝐆𝐚𝐢𝐧 𝐖𝐢𝐅𝐢 𝐁𝐨𝐨𝐬𝐭𝐞𝐫: this 2.4G WiFi Yagi Directional Antenna Supports 2.4GHz (2400-2483MHz) frequency range for all 2.4GHz networking devices. 𝐇𝐢𝐠𝐡𝐥𝐲 𝐃𝐢𝐫𝐞𝐭𝐢𝐨𝐧𝐚𝐥 𝐃𝐞𝐬𝐢𝐠𝐧: 25dbi gain,ensure the antenna is aimed at the signal source, such as a signal tower.𝐌𝐨𝐫𝐞 𝐄𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐭: The 150cm extension cable boosts signal coverage,enhances quality, reduces interference, and improves stability. lts flexibility supports diverse setups, enabling optimal antenna placement for better reception or transmission.
- 𝐂𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐥𝐞 𝐰𝐢𝐭𝐡 𝐎𝐍𝐋𝐘 𝟐.𝟒𝐆𝐇𝐳 𝐝𝐞𝐯𝐢𝐜𝐞𝐬: Yagi Satellite Antenna works for WiFi Wireless Network Router, WiFi AP Hotspot, WiFi USB Adapter, Desktop Pcs, Wireless Mini PCl Express, PCIE Network Card Adapter, Main Board Antenna Replacement.Yagi Directional Antenna fits 2.4GHz WiFi IP Security Camera, Wireless Video Surveillance DVR Recorder, CCTV System.Band Yagi Antenna works for industrial Router loT Gateway Modem, M2M Terminal,Remote Monitoring control, Wireless HDMl Extender.
- 𝐄𝐚𝐬𝐲 𝐓𝐨 𝐔𝐬𝐞:Just swap out your current antenna to boost signal strength. It's super easy simply unscrew the old antenna and screw on the new one!This TV Outdoor Yagi antenna is super handy and can be used for 2.4GHz devices,like boosting WiFi on your desktop Pc, improving signal, helping security camera connect better,or upgrading USB adapters,PCI-E network card.ONlY for 2.4Ghz devices,not 5.8GHz.Made from high-quality Aluminum alloy, it's waterproof,durable,long lasting,perfect for outdoor use.
- Package:1 x 2.4Ghz WiFi Yagi Directional Antenna (RP-SMA).1 x Wall Mount Bracket.
A separate, fully specified geometry illustrates why mixing plans is risky. COMSOL’s Wi-Fi Booster Yagi–Uda model is centered at 2.45 GHz and uses a straight dipole driven element. Its dimensions are simulation parameters for that design, not universal DIY measurements:
| Part or parameter | COMSOL model value |
|---|---|
| Wavelength at the model frequency | 0.12236 m |
| Dipole arm length | 0.026308 m |
| Reflector length | 0.058735 m |
| Reflector spacing | 0.024473 m |
| Director length | 0.042827 m |
| Director spacing | 0.024473 m |
That model’s straight-dipole geometry is not the square-loop construction in the GitHub template. Do not combine the dimensions from one with the element shape and feed instructions from the other as though the result were a tested design.
Rank #2
- TECHTOO High-Gain WiFi Antenna Can Increases the Range of Your 2.4GHz Wireless Device. Extend The Wireless Range to Dead Spot.
- High-Power WiFi Booster: 2.4GHz (2400 - 2485 MHz) for All the 2.4GHz Frequenvy Networking Devices. Highly Directional: Make Sure to Point The Antenna to the Direction of Signal Source like Signal Tower.
- The Yagi Antenna Has A Wide Range of Application. It Can be WiFi Antenna for Desktop PC, Router Antenna, Security Camera Antenna, USB WiFi Adapter Antenna, PCI-E WiFi Network Card Antenna.etc.
- Compatible with 2.4GHz Devices: Wireless Network Router, WiFi AP Hotspot Modem, WiFi USB Adapter, Desktop PC, Wireless Mini PCI Express, PCIE Network Card Adapter, Main Board Antenna Replacement
- Compatible with 2.4GHz WiFi IP Security Camera, Wireless Video Surveillance DVR Recorder, CCTV System, Truck RV Van Trail Rear View Camera, Reverse Camera, Backup Camera, Industrial Router IoT Gateway Modem, M2M Terminal, Remote Monitoring and Control, Wireless Video, Wireless HDMI Extender, Remote Door Open System
Materials and compatibility checks
- Conductor: The GitHub project names 18 AWG copper wire. Follow the selected template for quantity, length, and any additional materials.
- Support or boom: Use the support specified by the chosen plan and keep elements in their intended positions and alignment. Material and placement can affect antenna behavior.
- Feed cable and connector: Identify the antenna connector on your router or Wi-Fi adapter before buying a pigtail. The cited designs do not establish one connector type for all equipment.
- Band: The examples here concern 2.4 GHz Wi-Fi. They do not establish 5 GHz coverage or compatibility with a particular router or adapter.
- Tools: The loop-template instructions call for forming and soldering the wire. An analyzer is optional for advanced impedance or S-parameter characterization, not a basic requirement for assembling the antenna.
Build the template-based antenna
- Confirm the radio and feed connection. Check whether your router or adapter supports an external antenna and identify its connector. Make sure the selected antenna feed can connect before building around a cable or pigtail.
- Print and join the chosen template. Use the GitHub project’s template instructions to assemble it at the intended scale. Keep the pattern as the reference for element positions; do not substitute dimensions from the COMSOL model.
- Form the driven loop. Bend 18 AWG copper wire into the square-loop shape shown in the template, preserving the small feed gap on the side facing the reflector.
- Attach the feed conductors. Solder the feed and ground to the two ends of the driven element as the project’s instructions specify. Avoid bridging the gap with solder.
- Cut and mount the passive elements. Make the reflector and directors to the template’s dimensions, then attach them to the support in the marked positions. Keep the reflector behind the driven element and directors extending toward the front.
- Inspect before connecting. Check that the elements are straight, aligned, securely attached, and not touching where the feed gap must remain open. Connect only with the cable and connector appropriate to your device.
Aim and evaluate it without assuming a range gain
Place the antenna so the directors point along the desired link, then adjust its orientation while observing the connection on the actual Wi-Fi equipment. The cited DIY page does not report measured gain, and the COMSOL figures are simulation outputs rather than verified results for a home-built antenna. COMSOL reports 10 dBi maximum modeled gain, 14 dB modeled front-to-back ratio, and a 58° E-plane half-power beamwidth for its particular 2.45 GHz model. These values are not a prediction of your build’s range or performance.
For comparisons between plans, check target frequency, element shape and dimensions, spacing, conductor diameter, support material and layout, and feed or matching arrangement. Also distinguish simulated results from measurements on a physical antenna. The available NBS measurements are at 400 MHz, while COMSOL’s cited Wi-Fi figures are modeled, so neither supplies a measured result for this template-built antenna.
Quick wins for a faster PC:
Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →Rank #3
- [TP513] 17dBi Yagi Antenna / 2.4Ghz / High-Gain / Long-Range / Outdoor / Directional / N-Female pigtail connector
- [WIRELESS] designed to collects the signal and increase reception from a remote location or bridge WiFi networks between two points or objects that are far apart
- [2.4Ghz BAND] the most widely used WiFi frequency with a furthermost distance coverage
- [DIRECTIONAL] focus the signal in one direction to increase reception leading to greater gain figures.
- [OUTDOOR] compact, light-weight, rugged weatherproof housing and corrosion-resistant materials for outside pole mount (mounting hardware included; mounting pole not included).
These sources do not establish a universal cut list, a connector for an unspecified Wi-Fi device, or a real-world range improvement. They also do not determine the transmit-power rules that apply in every jurisdiction; check the requirements for your location and equipment before transmitting.
Quick Recap
Best Value
- 【Long-Range Point-to-Point Extension】 Focuses signal energy into a powerful 30° beam to bridge network gaps up to 500-6500ft. Perfect for extending WiFi to detached garages, workshops, or farm outbuildings where standard antennas fail.
- 【Dual-Band Anti-Interference】 Covers both 2.4GHz and 5.8GHz bands . The focused radiation pattern cuts through network congestion and reduces interference from neighboring WiFi by 30% , ensuring stable HD streaming for security cameras.
- 【48H Salt Spray Corrosion Tested】 Constructed from precision-machined aluminum alloy with gold-plated connectors. Tested to withstand 48 hours of salt spray, making it highly resistant to oxidation and signal distortion in coastal or high-humidity environments.
- 【Pro-Grade RG58 Low-Loss Cable】 Includes a 4.92ft (1.5m) heavy-duty RG58 coaxial cable. Designed with 50-ohm impedance and 50W power handling for professional-grade power output and minimal signal attenuation over long distances.
- 【Broad Device Compatibility】 Features an RP-SMA Male connector (Thread inside, NO center pin). Works with WiFi routers, PCIe network cards, IP cameras, and wireless bridges. Note: Specifically for WiFi equipment; not compatible with TV/CATV/Satellite systems.
Rank #4
- 🌏【Dual-Band High Power】Operates on both 2.4GHz (2400-2500MHz) and 5.8GHz (5150-5850MHz) bands with 50W max power handling, engineered for heavy-duty routers and long-range wireless systems.
- 🌏【Professional-Grade Performance】8dBi high gain directional antenna with ≤3.0 VSWR, achieving 63.67% radiation efficiency. Directional radiation pattern (H:30° V:25°) minimizes interference in crowded networks. Providing 30% longer transmission distance than standard antennas. Precision-engineered aluminum structure resists interference.
- 🌏【Enhanced Connectivity Kit】Includes 4.92Ft RG58 coaxial cable with gold-plated RP-SMA female connector, featuring 500+ bend cycles durability. Reverse polarity design ensures secure connection with most routers and wireless devices. Ideal for outdoor pole/wall mounting.
- 🌏【Broad Compatibility】Commonly used in routers, PCIe network cards, wireless repeaters, and IoT devices for secure connections that maintain stable signal transmission in crowded WiFi environments. Can be used commercially for smart farms, surveillance systems and warehouse networks.
- 🌏【Package & Service】1PCS 2.4GHz 5.8GHz Dual Band Yagi Antenna. If you have any questions, please feel free to send us an email and we will be happy to answer them for you.We offer a 12-month warranty and return service after the original purchase date.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
