The earth ground below the antenna, a conducting surface a least. Maxtena integration and soldering guidelines m1575hct. In this paper, we show the influence of the dimensions and the shape of the support. This paper presents the effect of the slots in ground plane and patch on resonant frequency, impedance bandwidth, gain and side lobe. In particular the balanced design feature makes the antenna ground plane. As large as practical will assure optimum antenna performance. These effects include frequency shift, gain, axial ratio and radiation pattern.
The antron 99 fits into the sleeve on this kit, which is supported by four 6 radials. A compact patch antenna with a flared groundplane that may be integrated within a. However when it is not possible to ground mount an antenna because of ground conditions or it is necessary to elevate the antenna, another solution is to use a ground plane. For a simple patch antenna the size of gorund plane significantly affects the return loss at resonances. Firestik fl3b three foot firefly antenna with tuneable tip black 4. Below is a quarter wave ground plane antenna i made for 23cm, 1296mhz which is made from offcuts of household mains copper wire and a scrap bnc socket from the junk box. Lcom ground plane kits allow ground dependent antennas to be used in applications where the antenna cannot be mounted on a ground plane. Base station antenna ground plane converter kit hggpcon. A microstrip patch or array with infinite ground plane is a theoretical antenna, but patch with finite ground plane is of practical interest. Here we have a ground plane antenna mostly used for 144, 222, 440 mhz. Im constantly out at the 3 mile marker with strong telemetry.
A 6 meter 14 wave ground plane is an easy antenna to build, and if you can give it some elevation will perform fine for you. Influence of the ground plane structure on the radiation. A metal surface the larger and flatter, the better is required underneath the cb antenna to launch the signal out into the atmosphere. Antenna grounding for composite aircraft cobham plc. It accepts only vhfuhf mobile antennas with a pl259 connector. The ground plane has substantial effects on the performance of the antenna.
A basic antenna like a dipole is selfcontained and requires no ground plane. If we drop the size constraint, it appears that the antenna sensitivity is optimum with a large patch antenna 25 x 25 x 4mm size is the largest available and a large 6 x 6 cm pcb ground plane. Given that you are usually using this on 2m or 70cm locally, often with a repeater, you dont need much of an antenna. An antenna ground plane is not to be confused with an electrical ground. Ground plane size effects on a microstrip patch antenna for small. This antenna is often built of printed circuit board material and the substrate makes up the patch antenna s dielectric. It consists of a flat rectangular sheet or patch of metal, mounted over a larger sheet of metal called a ground plane. Before starting to build the antenna, you can stiffen up ordinary 14 gauge copper.
Factory authorized stocking distributor of antennas. I have looked online a bit and it seems to me that the general belief is that the larger the ground plane up to a certain extent, the better. Omni directional antenna that will outperform your whip antenna especially when flying overhead. Maxtena integration and soldering guidelines m1575hct22. This tram land mobile base ground plane kit will convert your nmo mobile antenna into an omni base station. The basics of patch antennas, updated orban microwave. Arcadian also offers related wireless gear including antenna mounting brackets, coaxial cable, enclosures, connectors and cable assemblies. It will also discuss newer antenna designs such as patch and chip antennas. In telecommunication, a ground plane is a flat or nearly flat horizontal conducting surface that serves as part of an antenna, to reflect the radio waves from the other antenna elements. The gpk01 is a premium ground plane kit for an easy solution to provide ground mount for a base or field mounted antenna. Design of a compact antenna with flared groundplane for a. For demonstration in educational labs, we are offering single element, double elements, four elements and sixteen element mic patch antenna with gain of 10 to 20 db aprox. Ground plane problems typically show up in the form of high standing wave ratio swr and poor performance.
Compact modified ground plane 1x2 circular patch antenna. The objective is to study the effects of a small ground plane. View forum posts private message view blog entries view articles member level 2 join date oct 2010 posts 44 helped 2 2 points. This is especially important where installed height is limited. These are antenna mounts with metal rods underneath to provide a groundplane for the antenna, click here. This groundplane kit is made especially for the antron 99 base station antenna. Comes with prefolded bowtie, reflector plate, cable, tubing, and even a mounting plate. Ground plane size vhf antennas will require a metal ground plane size of 24 by 24 or larger. Firestik fg4648b four foot noground plane cb antenna kit you can use firestik fg4648 as no ground plane cb antenna. Wilson 305430 no ground antenna kit, slide to tune coax, fiberglass, 3ft, black, 300 watt, 26. Iridium ceramic patch development kit 25mm multiband antennas. In my opinion, an optimiztion for the choice for the size of ground plane should be taken into consideration for any given antenna design. The distance between the patch and the ground plane the.
Designed to work on vehicles without a substantial metal chassis or ground plane. The plane does not necessarily have to be connected to ground. Namely, they have small bandwidth a single patch microstrip antenna with. These are fabricated as per customers requirements. I am not going to go into the details on how to built it, because its so simple. Iridium 1616 mhz set of 6 patches to integrate on multiple devices thruhole mount high gain ground plane dependent patches dimensions 25 x 25 x 4. Can not be used on any other bands besides 2m and 70cm. Mobile to base station ground plane kit the mfj1401 mobile to base station ground plane kit converts most mobile antennas into a ground plane base station antenna. However, the number of other ops on 6 meters has the tendency to be small, so a beam will give you better odds when openings come.
Deschamps in 1953, but didnt become practical until the 1970s when it was developed further by researchers such as robert e. Then updown on the ground or simply a 45 degree v n the ground as well. Modeling a ground plane antenna with 4nec2 part 2 youtube. Patch and ground plane design of microstrip antennas by. Actual environments are different, and the ground plane is necessarily limited. It is specifically designed to solve the problems associated with the lack of ground plane. Solarcon gpk1 ground plane kit for a99 antenna 1290 solarcon gpk1 ground plane kit for a99 antenna the solarcon gpk1 ground plane kit used with the antron 99 a99 base cb antenna is intended to lower the angle of radiation for a slight increase in range. Most other antennas may also use the 24 by 24 rule, but with ground planes, larger is always better. It lowers the angle of radiation, allowing the antenna to achieve a greater range. Ground mounted antennas are often very easy and convenient to use. Namely, they have small bandwidth a singlepatch microstrip antenna with. M electronics and telecommunication department, kit.
In microstrip antennas and printed monopole antennas an area of copper foil on the opposite side of a printed circuit board. The gpk01 pairs easily with nmo hf, vhf and uhf antennas such as the dual band nmo72 or tri band tb320a. But for uwb it also improves s11 at lower frequency. As the name indicates the antenna ground plane acts as a. This article shows how a dipole and and ground plane antenna are similar but. The size for the ground plane depends on many issues. Most radiation analyses of microstrip antenna are based on the assumption of an infinite ground plane. The concept of a ground plane is roughly to build a antenna half as long as a normal selfcontained one, then add a mirror so that it looks like a complete antenna from the antenna side of. It features wireend loops for safety sharp, straight wires are hazardous and convenience its top loop lets you hang it off high objects for best performance. Here the previously designed 8 element array with corporate feed, as shown in figure 6. The imax gpk consists of a nicely chromed metal bracket and four 6foot fiberglass radials which strangely resemble the top sections of the a99 antennas. I am trying to design a patch antenna, so i ran several fullwave simulations and increased the ground plane size each iteration, extracting the gain. A simple ground plane antenna you can buildfor 146, 223 or 440 mhzin no time flat.
This work describes the research carried out on small microstrip patch antennas for small handsets. My understanding is that when building or installing an antenna designed to operate over a ground plane e. Build your own ground plane kit and use your favorite mobile antenna as a field expedient base station antenna. Wilson 880900800b 3000w magnetic car mount antenna black. Whats the difference between a dipole and a ground plane.
This no ground antenna kit was specifically designed to solve the lack of ground plane problems found on vehicles constructed of plastic, fiberglass, wood or aluminum. When the ground plane size changes the resonance frequency of the patch, where the matching is optimal, changes as well. A typical mobile cb antenna does not transmit horizontally, it radiates in a downward pattern. The position of the patch on top of the ground plane has effects on the radiation properties of the antenna similar to a variation of the size l. In the following some results are reported for the patch moving on the diagonal of the ground plane, starting from the center see fig.
Wilson 305430 no ground antenna kit, slide to tune. A patch antenna is a type of radio antenna with a low profile, which can be mounted on a flat surface. Click here to go to our page on circular patch antennas new for september 2018. They are the original type of microstrip antenna described by howell in 1972. Patch microstrip and slot antennas used at microwave frequencies are also.
Solarcon a99 antron ground plane kit installation gpk1. The gpk01 provides a proper ground plane for easy field or base antenna deployments. New hams can build this with little to no experience in antenna building. Effects of ground plane size on antenna gain electrical. The firestik firefly lg3m2lg4m2 no ground plane antenna kit with molded side mount is a great antenna kit for rv or any other fiberglass or plastic vehicle quick view firestik fg2648fg4648 no ground plane cb antenna kit with a 3way mirror mount. The one pictured below is for receiving adsb aircraft signals on 1090mhz, again using.
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