Directional patch antenna at 2.4ghz

If your measurements match the numbers on the diagrams, then your print is to scale and you may proceed. Accuracy need not to be tight for the antenna to perform well. Now superimpose both prints, until they match at around element 10 or 11, and tack them together with scotch tape or white glue. You have to trim the paper clips with a nibbler or plier to fit the vertical bars "elements". This is fairly straight forward. Lay the paper clip on the template's element and mark the ends with a marker.

Snip at the marking. Make sure that each element fits correctly the length of the bar on the diagram. Fix the elements in place with crazy glue. Leave element 2 for later. This is the element that connects to the electronics and is called "the driven element" as in being driven by electronics. The backbone holds the shape of the antenna. I just cut pieces of popsicle sticks and fit them between the gaps of the elements.

I used white glue to fix them in place. Start from element 15 backward. When you arrive to element 2 move on to the next step. The "driven element" in a Yagi antenna, is usually the second one from the start. It is a broken loop and not a straight wire. A loop of wire resonates at a specific radio frequency depending on its dimensions. The dimensions of the driven element in this antenna is set at 2. It just happens that its about the size of a common big paper clip.

You need to clip the paperclip so that it loops around and meet in the center but the end not touching, leaving a gap see photo. Fix it in place with crazy glue and build the back bone around it. When all the elements and sticks are in place, reinforce the antenna with another layer of popsicle sticks. Glue full lengthed popsicle sticks on top of the antenna. The antenna should become mechanically stiff.

Then rip the paper template of the antenna. This is the most difficult part and depends on the electronic hardware you have. The basic idea is that you need to solder a wire between the WiFi board's RF output and the driven element of the yagi antenna. Those with external antennae, like mine, are easier to connect because you are just replacing the external whip antenna with the Yagi.

Those with internal antenna may need to have their on-board strip antenna modified as illustrated in the pictures here. You need to slightly experiment in this case. I have tried soldering a coax to my board's antenna connectors and the two ends of the yagi's active element loop but it did not work in my case.

I have no explanations why that did not work, but other DIYers that have built Yagi antennae connected their antenna in this manner. In my case, I just connected a single thin strand of copper wire between the active element of the strip antenna and one end of the loop of the driven element. Please read the annotations of the pictures for more details. The performance was pretty spectacular for this easy to build antenna.

I was able to see the WiFi of a hotel that was 2 miles away from my home. The most difficult part was connecting the antenna to the USB modem. Okay well I read through the entire post and I saw many things that made a lot of sense, also saw a lot of unnecessary flaming, but I do have a few comments to make. Right off the bat the one individual that asked about having his modem in the basement with a rotating antenna on the roof needs a reality check.

Take the dongle apart and connect a USB extension cable to it and mount it directly on the antenna assembly. The antenna is designed from multiple bays consisting of multiple dipoles and a reflector. Panel antennas are commonly used in WiFi networks, WiMax, and cellular base stations. Sectoral Antennas Sectoral also sector antennas are directional RF and microwave antennas that radiate in a geometric sector-shaped pattern with a wide range of working frequencies.

These antennas radiated within designated sectoral dimensions with varying arch degrees from 45 degrees , 60 degrees , 90 degrees to as high as degrees.

Sectoral antennas radiate within a short distances range usually of about 4 km to 5 km. Sectoral antennas are mostly designed to be taller than wide. They radiate more RF along the horizontal axis and less vertically with peak gain at the center. Band 71 MHz Ready TETRA 1. Wi-Fi Wi-Fi 6 WLAN ZigBee Wi-Fi 6E UWB ISM Bands LTE Band 1 LTE Band 2 LTE Band 3 LTE Band 4 LTE Band 5 LTE Band 6 LTE Band 7 LTE Band 8 LTE Band 9 LTE Band 10 LTE Band 11 8.

LTE Band 12 LTE Band 13 LTE Band 14 LTE Band 15 7. LTE Band 16 7. LTE Band 17 LTE Band 18 LTE Band 19 LTE Band 20 LTE Band 21 6. LTE Band 22 LTE Band 23 LTE Band 24 7. LTE Band 25 LTE Band 26 LTE Band 27 LTE Band 28 LTE Band 29 8. LTE Band 30 Band 31 MHz 8. LTE Band 33 7. LTE Band 34 7. LTE Band 35 LTE Band 36 3.

LTE Band 37 3. LTE Band 38 7. LTE Band 39 6. LTE Band 40 8. LTE Band 41 9. Using the lowest possible permittivity substrate and perhaps a gain-enhancing superstrate are probably your best options. Here is an option:. Hi If you are not completely restricted in the z-direction, there is the option of doing stacked patch.

If it has to be completely plannar, I only know using arrays, which will make it larger. I think the question is: what radiation pattern is required? Both have advantages, it really depends on the application. That means the length should be about 60mm, which is more than the required dimensions.

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