Biquad Antenna Construction. Biquad Antenna Construction (first published September 2002) This page details the construction of a biquad antenna. The biquad antenna is easy to build, and provides a reliable 11dBi gain, with a fairly wide beamwidth. Background completed biquad antenna I've done quite a bit of experimentation and testing with various home made dipoles for 24dBi Conifer dishes, and have managed to increase the performance of the dish. Trevor Marshall has a webpage with information about using a biquad as a feed on a Primestar satellite dish, with very good results. Note that the photos on Trevor Marshall's webpage do not clearly show the construction of the biquad - particularly the way in which the quad is attached to the coax. Use the photos of my biquad below, and refer to the websites listed in the references section at the bottom of this page for more information on the correct construction of the biquad.
Parts Required Reflector Cut a square piece of blank printed circuit board, 123x123mm. 90 degree bend. Tactical Antennas. Critical Tasks: 01-5705.07-000301-5879.07.9001 In this lesson, you will learn about the types of tactical antennas and their radiation patterns.
In addition, you will learn about fabricating field expedient antennas using various repair techniques. Tactical antennas are designed for efficiency and ease-of-use, and are ruggedized to take the abuse they receive in the field. Some antennas are easy to use, such as a whip antenna that is used in high mobility operations. Others, like directional antennas, require a working knowledge of antenna engineering. 1. 2.
Figure 2-1. Figure 2-2. Figure 2-3. Making an 802.11 antenna from a tin can. So for some strange reason, I got the wardriving bug again.
Cousin James got me thinking about building a 802.11 antenna. He wants one to try and leech broadband off one of his neighbors. The only bit you can't buy in a local store is a card to connector pigtail. The pigtail connects the tiny connector on the PC card to a more standard RF connector. Typically the pigtail is to a type N connector. We picked up Type N cable connectors and bulkhead connectors at the local electronics store.
Next I had to pick up a couple 40 oz. cans. I opened the can, saved the chili in tupperware, and then washed the can. Next I got a piece of heavy copper wire for the driver element. Since I work with an engineering shop, I borrowed a real soldering iron. Heating and preparing the surfaces. The actual soldering of the element. Next I prepared the can. Again, note the proper method of securing the can during drilling. Viola! The completed pigtail -> cable -> cantenna assembly. Wireless guides and reviews - Gumph.
SHF. HF.