How to make a cell phone antenna

Collect zigzag antenna for GSM, using eight conductors with a length of 80 mm, which form two cells in a diamond shape. For manufacturing the antenna use the provided schema. Conductors which are energized at points A and B are in-phase antennath lattice consisting of four vibrators. The current highs are in the corners (P), as well as food outlets. The antenna is characterized by a linear (vertical) polarization.

Increase the directivity of the antenna with reflector which reflects the incident energy to the leaf antenna. It should be located at a distance of forty-five millimeters from the blade. To make cloth and lens, use a one-sided foil fiberglass, preferably grade SF-1, its thickness should be from one to one and a half millimeters. The canvas is cut along the contour of the cells.

Drill holes at points located to the tops of the cells of the leaf, and also in the reflector. Screw them to the posts indicated in the figure 3, with the screws. During the design of the antenna make the rack from any dielectric, for example, Plexiglas.

Drill out inside of racks on each side of the hole diameters from 2.4 to 3.2 mm, a depth of 1cm. Solder a to point b, the center conductor of the coaxial cable to power the antenna, its impedance should be 50 Ohms. To the point And needs to be soldered braid.

Route the cable along the vibrators, get them out through zero potential of the canvas. Solder it to the tinned wire to the vibrator and attach it to the rack. Then print it through the hole of the screen. Solder the end of the feeder connector FME 740, it will screw adapter, it can be purchased in the salon of cellular communication.