Bowtie Antenna Design

I have design 'n simulate bowtie antenna with center frequency 250 MHz. The electric field waveform is ok. But the return loss is so big in center frequency ( about -8 dB). Do anyone know how to match it with 50 ohm coax, so i can get -10 dB return loss in center frequency ? Thx b4

Hi, I am trying to simulate a wide band patch bowtie antenna using HFSS. From the literatures, I found the UWB bowtie antenna falls into two categories, slot bowtie antenna with CPW feeding and self-complementary bowtie design. I want to (...)

Hi can anyone post some useful links for desinging bowtie antenna for wider bandwidth in an ads...

hi see this paper A Compact Printed bowtie antenna for Ultra-Wideband Applications in European conference 39 at 2009 but it is not common dipole

hello i want to make an array of 4 bowtie antennas in HFSS for GPR application in the frequency range of 800-1000MHz.can anyone plz post me its design and dimensions.can cpw bowtie be used for GPR apllications.

i have to design a bowtie in hfss 3-18 GHz, gain>=0, omnidirectional is it possible? some ideas? thanks

we cant calculate the impedance of bowtie

Hi all, I want to have efficient way of designing a bowtie antenna for uwb applications. Can any body provide me with the tutorial...

Hi Name modified Size Description -------------------------------------------------------------------------------- 00index 20-Aug-2001 12:45 3k 13-double-quad.jpg 14-Sep-2001 11:11 159k 13cm/ 19-Jul-2001 00:28 - 13cm2lambda-slot.txt 02-Sep-2001 0

Does anyone knows what is the irregular shape PCB patches surrounding the antenna in the schematic for? I know there's a slot antenna + bowtie antenna in the photo but I'm not sure what's those small patches are for. Thanks.

hi all, i built the bowtie antenna in the paper but it does not work, any one can help me in that.

I am currently designing a bowtie antenna using ansoft hfss for my final year project. Can anyone help me to explain why does most of the antenna has an input impedance of 50ohm. Is 50ohm consider as an effective impedance matching?If yes why?

Did you do an Internet search? There is no formula for bowtie dimensions that fits all applications. When you take some examples found on the Internet, you can scale them to the desired frequency. The length depends on the taper angle and proximity of, for example, a ground plane (to get directivity). By changing the taper angle (and dipole

with using microstrip antenna dipole you cannot obtain wide band. if you want design on printed circuit board use bowtie antenna, you can obtain wide band.

u can use dipole bowtie antenna which each pole printed on one side of substrate

The easy one is the "log periodic" antenna. ... The second one is the "dual-bowtie" design that involves more sculpting, but you get a much more powerful ...

which kind of UWB u want to design ? hi friend , i want any UWB antenna design ,that is example bowtie, or monopole disc ,or any antenna design using CST or HFSS thank u bye ---------- Post added at 15:08 ---------- Previous post was at 15:05 ---------- hi friend ,iam not

a simple dipole or bowtie in planner type and i think all common microstrip has more than this gain

hi all i have designed a bow tie antenna for GPR in CST that will work between 500mhz-2ghz but the reference impedance is 250 ohms and it will be having a coaxial feeding i need to design a BALUN that will convert 250 ohm to 50 ohms (coaxial cable). can anyone help . Thanks in advance Vaibhav Thakur

Check out this article: "Novel antennas for ultra-wideband communications" by N. Fortino, G. Kossiavas, J. Y. Dauvignac, R. Staraj in Microwave and Optical Technology Letters, Volume 41, Issue 3 , pp. 166 - 169 based on a triangular (bowtie) monopole...Completely different from typical UWB antenna types...

Hi every body; I want to measure the input impedance of this bowtie antenna in hfss, but I don't know what should i do. could you please explain how should I feed this antenna in hfss (wave port, lumped port or other excitation). and how should I measure input impedance of it.

you can get the hfss full book off the ansoft site there are other examples here. also, you need to increase the number of passes to get the bowtie to converge like the one in the manual.

antennas for GPR: 1. bowtie 2. Dipole --> more difficult for matching impedance 3. Horn 4. ...else...?

1 when i simulate a bowtie antenna in CST MWS 5.0, the computed radiating efficiency and total efficiency are 1.1 and 0.2 respectively, i am confused about that as the radiating efficiency is larger than 1, so i want to ask the accurate definition of radiating efficiency and total efficiency and the difference between them. Any indication will be

I am currently designing a bowtie shape antenna...I wanna noe what is the purpose of the mesh plot in ansoft HFSS...anyone pls help me...tanx a lot!!!

Hi I am currently doing my final year project on ultra wideband antenna and have actually designed an array of 2x2 bowtie antenna patch. I need design 1-4 equal split wilkinson power divider using microwave office 2002 but I have difficulties. Please help!! This is urgent!!!

Hi, I am trying to design bowtie antenna for 915Mhz. Please look on the mesh and guide me if its correct mesh or there need to be some improvements. Thanks

Hi friends i am working upon bowtie dipole antenna from 0.7 to 3 GHz..but it working fine fron 1.5 to 3.4 Ghz...what the necessary changes i need to make to operate it from 0.7 to 3 ghz..The following attachment is layout of my

but u ask for 500GHz and its too much Why? I'm not working in that frequency range, but looking at the new IEEE Transactions on Terahertz Science and Technology, it seem that the antenna structures are not much different from mm-wave antennas (e.g. bowtie).

I am trying to design a miniature antenna array to attach to a PCB that will receive the new HDTV signal known as ATSC signal. The array will need to individually tune each antenna to the different channels (NBC, CBS, PBS, ABC etc). I need each antenna to work independently from each other and assignable to a networked IP. (...)

You can google bowtie designs, but for Wimax at 3.5 GHz using it makes no better sense that an ordinary dipole. bowtie dipole is used for "very" wideband applications, like 20-50% bandwidth.