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Antenna Gain Directivity

113 Threads found on edaboard.com: Antenna Gain Directivity

chaching the Gain of each polarization

Hello , the Sinuous antenna that i have built is dual polarized because it hase two orthogonal dipole feed,i have attached the diagram and farfield results of the simulation. this antena is dually polarized, i have used ludwig 3 on vertical /horizontal as shown in the attached photos. how can i interpret the ludwig 3 diagram and get the direct

Microstrip Dual Band Antenna Directivity Problem HFSS

Hello, I am trying to design dual band microstrip patch antenna but I calculate very low directivity, gain values. I am trying to solve this for few days but I couldn't. Could you please help me? Thanks... 133090

beamwidth an power reveived of antenna

exactly the opposite : high gain small beamwidth and viceversa. The bigger is the antenna the bigger is the gain

Measured realized gain pattern values

You can do a relative directivity, where all the gain points are related to a maximum gain point. For example if you get an antenna gain pattern from 0 deg to 360 deg (step by 15 deg), and you get a maximum antenna gain at 30 deg, consider that gain point (...)

Coverage area of the microstrip patch antenna

Hi All, Am very new to microstrip patch antenna design.Have to design the patch antenna resonating at 2.45 GHz for Bio-Medical applications using ADS software. Could you please help me out to identify the coverage area of the patch antenna

What is difference between radiation gain and antenna gain?

Hi What is difference between radiation gain and antenna gain? Thanks alot

Antenna E and H filed

hi, E field is electrical field and H field is magnetic field. i would say most relevant gain and efficiency. from gain you got to know directivity and polarization of an antenna. from efficiency you know how much radiated power over input power for an antenna. E field plus H field with other parameters (...)

how to find. micro patch antenna results from ie3d

I had simulated micro patch antenna for 2.4 ghz and I can find s11 but please explain procedures to find other results like far feild radiation, near feild,efficiency,gain,directivity and all parameters

waveguide horn array antenna

Best e-book is the Google. By array-antenna, are you looking to build a Phased Array? Or just using multiple arrays to increase directivity and gain? I would've gone for Helical however...

400 MHz Antenna Problem

To add to previous post... the omnidirectional horizontal path and the dead spot on vertical, yields a meagre gain of only 2dBi . 0dB isotropic or 0 dBi is for a theoretical spherical antenna. This "rubber ducky" choice trades sensitivity with directional pattern or "directivity gain" It does not control the transmit (...)

Antenna gain Problem having megative value of gain

Do you know why the gain would be negative? What is the directivity of the antenna? Do you know the relationship between the two?

[CST] Gain value is more then Directivity..WHy is that???

Hello Everyone I am simulating an antenna at 193.5 THz frequency range (150-250 THz). The design is a simple Dielectric Resonator fed by a microstrip line. I am facing two problems: 1) I am getting the value of gain to be more than directivity, i.e. My directivity = 12.47 and gain =13.18 as shown in (...)

Gain problem of dual band microstrip patch antenna in HFSS

obtained negative antenna gain despite the positive directivity. This is caused by loss in the antenna: lossy dielectric material and conductor losses. On lossy substrates like FR4, the gain of patch antennas is pretty bad, and your simulation shows that if you include the dielectric (...)

antenna radiation pattern text file in FEKO

hi all. ihave designed an antenna and i want to export the radiation pattern text file in FEKO. the exported .ffe file have 7 columns of data but it is not clear what is the data. column 1 and 2 are theta and phi. and i want to know what are the next 4 columns. i think two of them are E_phi and E_theta. but im not sure what are the other

URGENT Help me ///can the directivity be less than 1 in cst mws

hi all i am tring to plot the radiation pattern of a monopole printed antenna with cst (in gain ieee and polar plot with phi=0 and 90 degress and theta variable ) i got results where it shows that the results iaccurate and directivity less than one ie the radiation pattern is moving out of 0 db what mistake i commited in simulations the (...)

microstrip antenna gain and directivity

With any antenna, gain equals directivity minus loss. Some antennas are resonant and should be tuned for the best matching at a specified frequency (s11 >10 dB). Wideband antennas are considered if their S11 is poorer over the band width. Low S11 means less RF power supplied from a transmitter is radiated, (...)