2001年5月18日 · In the condition that the length of d monopole stays constant and grounding is to the metal casing of hand-held device: Note: perfect electic conducting gnd then gain of monopole approx 5.15dBi Note: where the size of gnd plane (e.g. ur hand-held device) is =/>> lambda / 2 then gain of monopole again approx 5.15dBi.

2013年4月11日 · Re: Monopole antenna design using HFSS _antenna gain with respect to ground plan Here I am attaching three different test results of a monopole antenna in different ground planes. Monopole antenna resonating at around 2 GHz. By increasing the ground plane diameter the gain of the antenna is increasing. As per my results says, gain of 2 GHz antenna

2017年8月18日 · The formula for the gain would only apply at antenna resonance. If you wrapped the wire around a circular form, you would create a normal mode helical antenna, which has a wider bandwidth that a monopole. You could probably find the formulas that you want in books like Antenna Theory, by Balanis. Kraus also has a couple of excellent books on ...

2012年2月9日 · as we know,in a λ/4 monopole wire antenna above ground plane,gain is 5.16 dB. also,in antenna,we can use from: dB=dBi. (if we don't use from dBd). but in a reference book,we saw gain of monopole antenna in a frequency range is 0 dBi (as attachment) in this book: height = h = 50mm radius = 0.5 mm why in this book,gain is 0 dBi?

2005年10月19日 · This is exactly what CST does best (in my opinion of course), which is wideband antenna simulations. The basic steps you need to take are: 1. Build the antenna & excitation port model 2. Set the desirable units, background & frequency range. 3. Set Open (add space) Boundary conditions. 4. Appropriate meshing. 5.

2013年7月22日 · And big gain for OMNI directional antenna inst very nice and Chines products are significantly complicate understanding with these staff. Сertainly ideally D should be: dipol directivity + 3dB, because vertical pattern is half, more narrow ( but it dependents from the ground dimensions, and conductivity ).

2013年4月11日 · Dear all, I would like to know the absolute gain of monopole antennas in the various bands. "MIL-DTL-85670C" describes the absolute gain of monopole from 30-400 MHz. If anybody can tell me if there is any reference mil standards for the monopole antenna in UHF, L Band and S band frequencies...

2013年4月11日 · I would like to know the absolute gain of monopole antennas in the various bands. "MIL-DTL-85670C" describes the absolute gain of monopole from 30-400 MHz. If anybody can tell me if there is any reference mil standards for the monopole antenna in UHF, L Band and S band frequencies.

2005年2月21日 · all commercial high gain antenna are achieve through lengthening the dipole antennas. you would have noticed that they are much longer than the ones you get preinstalled in your router. But there is a drawback with these high gain dipole. if you need coverage of 2 floor, the upper floor coverage will get a hit.

2008年5月3日 · Re: Need a help to simulate a reflector for monopole antenna Hi con_ga, The figure that you have posted is an UWB monopole antenna. If You use reflector for this circular patch UWB becomes narrow band. But Gain of your antenna will increased in that particular narrow band since radaitions are directed in one direction when compared to earlier ...