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224 Threads found on Antenna Impedance Matching
Hi everyone, I have designed a dual-band microstrip patch antenna for LTE and WiFi application. The antenna operate at 2.6GHz for LTE and 5.0GHz for WiFi. I have started the design process by designing the 5.0GHz WiFi then introduce two inverted U slots to generate the second 2.6GHz. The impedance matching for the first (...)
Hello everyone, I have done the circuit design of GPS module. I have taken the U-blox NEO-M8U and GPS Internal active antenna JCN04N to design the GPS. I want to know how to do impedance matching with GPS module and antenna. Please somebody help me to solve this problem. Thanks, advance. 136635
Hi... I am new in antenna design I need help regarding impedance matching of transmission line in dual feed circularly polarised microstrip square patch antenna. Please send me design equations and document regarding this. Thanking You in advance....
hi everybody! i want to know how i can make the passive impedance matching of a monopole antenne between 50 MHz and 500 MHz thanks for replies
Hello evey body, Anybody can help me i'm a student and i'm new with hfss and patch arrays. i would like to Match 50 Ohm line to 50 ohms Patches in my feed network of 2*2 microstrip array but i can't how can i do it and how can i design the Feed network. if any body have a picture which include the impedance of each line sent it to. I try wit
hi, I am gonna design a quasi yogi antenna.and I wanna do something like this model.132842132842 but I really don't know how it design its Lcps. which is relative to its impedance. I know Lcps is kinda like matching. but how to know what number of impedance that can match between dipole and cps
VSWR 1:2 doesn't exist. VSWR ratio can only be equal or greater than 1. Usually the helix antennas working in normal mode needs some impedance matching to get good VSWR.
Can you explain clearly about the "impedance matching"?
Hi all, Please, How can I use Lumped element on a port for impedance matching purpose between a discrete port and dipole antenna in CST? How can I connected the Lumped element, discrete port and antenna together ? what I use to connected them?
Hello everyone! In my current project of designing a fractal patch antenna based on the Sierpinski gasket I'm not able to achieve a S11 parameter. I've tried using pin feed and λ/4 transformer (using Smith chart) but they don't seem to work. In theory the antenna's impedance should be matched perfectly, but in POSTFEKO the results are (...)
Hello, I have an UWB antenna that is composed of double sided substrate. I noticed that when i round the lower vertices of the upper side (patch) or the upper vertices of the lower side (ground) the matching improves, i reviewed the imaginary and real part of the input impedance and i found that they do get improve as the rounding (...)
The answer to your question: Why do we use a short circuit line to the ground plane? is: For proper impedance matching. IFA is a variant of ILA (Inverted L antenna) which has an L shape and don't use this short transmission line for "proper" impedance matching as IFA. ILA gets the right port (...)
HI, I am currently designing an Inverted - F - antenna (IFA) FOR 865-867 MHz band using CST 2015 version. I will be thankful if you could help me out for the following questions. 1. Which portion of the antenna i am supposed to optimize in order to get the resonance? 2. What is the effect of adjusting the distance between the shorting pin an
how can i better s parameter of my antenna? :( my s parameter is high around -1 , -0.6 , .....
Between two approaches for impedance matching (minimum reflection or maximum power tranfser) which of them can result in more gain in an antenna?
i am trying to match my antenna by using a lumped matching network. i fed the antenna using a lambda/12(using fr-4 @2.4ghz)line the thickness of the substrate i used is 3.6 mil and z0=50ohm. i calculated the dimension using this.(see the link below)
how can we know is there perfect impedance matching for our antenna which is designed in hfss?
Without looking at your design, I'd have to say that it's expected. Commercial Yagi antennas typically have some kind of matching network (Gamma, Delta, etc.) to tune the antenna impedance to near 50/75 ohms.
Consider -4dBi of a linear antenna Parallel requires impedance matching Pi then T filter C-R-C-R for 50 Ohms. Separate GPS antenna requires careful location and ground pad size. SIM908 datasheet.pdf
Hi erayarik, I've never used FEKO, but I don't see how solving the characteristic modes will help you impedance match your antenna. The eigenmode solution will tell you the frequency at which the patch resonates, and possibly the quality factor of the resonance. Neither of these is terribly useful for impedance matching -- (...)