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online calculator that designs circularly polarized microstrip antennas with a selectable input impedance. The tool calculates the antenna dimensions and probe position that generate both circular polarization and the user-defined input impedance. We invite the antenna design community to visit...
Recently published work that greatly facilitates the design of circularly polarized rectangular microstrip antennas. The GUI proposed in this work calculates the antenna dimensions and probe position to generate simultaneously circular polarization and a selectable input impedance at a frequency...
Hello
Its a simple question however i don't see this in any books but i see it on papers, can i measure 3dB Half power beam width from gain pattern? if so, do i have to normalize it, or can i just subtract 3dB form the highest gain (in a given direction) and measured the beam width from there.
Hi i read posts about this subject but cant find a concrete answer,
i got a cilindrical microstrip antenna its supposed to be omnidirectional in the azimuthal plane ( ripples in the radiation patter should be >-3dB of the normalized radiation pattern) HFSS lets me find the E field but what i...
8the range of values are half power Beam width (HPBW), so first you should seek where its the maximum gain of your design ( usually where the retrn loss is minimum for frecuency and for microstrip antennas the "place on the radiation pattern " its usually broad side Theta = 0° Phi=0°), then you...
gain its a measure you have to perform where the radiated fields of your structure are strong, having this in mind, the radiated fields of most microstrip patch antennas happen broad side ( normal to the patch), in HFSS you plot gain in dB ( with out normalizing), if your antenna has 0dB it...
Hi you guys
Right now im trying to figure out why in my microtrip linear array (2X1) its giving me such a bad return loss (-14dB), y alredy design a single patch with a great return loss ( -40dB; edge feed with lambada/4 transformer to match a 50 ohm input), so im suspecting its the power...
hi you guys,
im having a bit of a problem, i got a patch antenna design (2.4GHz), and i want to know the effects of placing Emfit ( polypropilane and aluminion on top of the polypropylane) on top of the patch covering 1/2 along the resonant dimencion (L) .
i know that polypropilane its a...
hello.
first of all i wanna thank the forum for your help, its been inconditional for my proyect.
i got a big problem, i tried to find the resonating frecuency of a patch designed in Balanys, acording to the book the resonance of the design occurs at 10Ghz with a TM dominant mode, mi question...
thanx alot, i wanted to leave this link to anyone wanting to design an accurate transmision line, read this pdf and i guarantee you will be doubt free
https://www.csus.edu/indiv/o/oldenburgj/EEE244/Chapter2/MicrostripDesCompl.pdf
thanx for the fast reply, so let me get thsi straight, it dosnt matter, one just puts that extra microstrip line of 50 ohms so that the lenght of the quarter wave transformer dosnt get affected by soldering the pin head coming from the SMA connector right?
Hello you guys
i got a quick question, I’m designing a microstrip patch antenna with eadge feed, I used a quarter wave transformer to match the 50 ohm transmission line to the antenna, so far so good, now there is 2 transmission lines the quarter wave line and the 50 ohm line, the length of the...
ok, i seen a lot of threads about this subject but none gives a straight answer,
im simulating a microstrip patch antenna edge feed ( microstrip transmision line right in the middle)
er= 2.2
Thikness of the dielectric = 1.57mm
Lenght: quarter wave transfomer
Frecuency= 2.4 Ghz
Width=?
well...
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