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Questions related to Antennas
Is there any standard procedure or rule to determine design dimensions at miniaturized antennas at lower frequencies like 915MHz or 2.45MHz?
08 June 2021 7,923 5 View
I have simulated an antenna in CST with frequency range set to 1-3 GHz and the results were good, gain of around 1.2 dBi at 1.575 GHz. When I increased the frequency range in the model to 1-6 GHz,...
07 June 2021 5,748 6 View
I made a model of an aperture coupled patch antenna in CST. Its linearly polarized with a microstrip feed on the bottom layer and a single bowtie aperture slot. Substrate is FR-4 with er 4.23....
07 June 2021 8,181 6 View
We know that by using a microphone array we gain extra SNR. In the meantime, vector sensors are also with that advantage, and moreover, able to achieve that with a single sensor without the...
03 June 2021 320 4 View
I want to design a diversity reciver (in a single input multiple output (SIMO)) where i have the following specifications. 1. i have 100MHz RF bandwidth 2. i use simple BPSK 3. No of transmitting...
02 June 2021 5,542 5 View
TARC stands for Total Active Reflection Coefficient ECC stands for Effective Correlation Coefficient DG stands for Diversity Gain CCL Stands for Channel Capacity Loss MEG Stands for Mean Effective...
31 May 2021 1,435 8 View
when i import my design from HFSS to CST i obtained a big difference in results between them, i will be very thankfull for any help
27 May 2021 1,782 9 View
For example, default thickness for Gnd plane (2D sheet) of a patch antenna assigned with PEC boundary?? Thanking in advance.
24 May 2021 7,800 4 View
How is the effective size of a dipole/monopole printed antenna calculated? What is the scale factor/effective Er that should be used? Most of the equations I have found on the web are related to...
23 May 2021 6,256 8 View
Hi! Basically i am working for an horn antenna ranges from 2 to 20 GHz. I have to fabricate it as well. The main problem is how i can find the frequency range and gain of horn antenna from its...
20 May 2021 941 5 View
I have been working on Helix antenna and want to explore bifilar or quadrifilar helix antenna. What are their advantages over a monofilar helix antenna. Any recommendation on papers/articles or...
19 May 2021 5,287 2 View
I need to design an antenna on cst the design below, I need to generate 3 bands below -10db ( band1=[1,7GHz-1,8GHz] band2=[2,2GHz-2,4GHz] band3=[4GHz-4,5GHz] ). I increased the length to shift...
11 May 2021 3,285 6 View
Hello everybody! I have a problem with developing a compact antenna (it should be flat and no larger than 25 by 25 centimeters) for the High Frequency range (3-30 MHz). Please tell, is it...
06 May 2021 7,208 4 View
Hello dear friends, I am currently working on my thesis ''Examination of radiofrequency absorption differences of intraoral appliances made of different biomaterials''. And I have a question about...
04 May 2021 1,345 2 View
I was designing a microstrip patch array antenna with inset feed on a bent structure, But I am facing issues while assigning port. I have already designed a unit patch on the bent structure, so...
30 April 2021 7,237 9 View
is there any way to find the spillover and taper efficiency in CST for reflector antenna ?
16 April 2021 8,073 1 View
Dear All, Many authors, recommend the spatial distance to be within 5 to 15 km, between landslide incident and rain gauges in rigid (mountainous ) and gentle terrain catchments respectively...
12 April 2021 875 3 View
CST software: When I try to evaluate a new result, a error massage of "Data directory save error: Write error: Unknown data directory item type: CURRENT3D_SRF" will appear. And I want to know...
08 March 2021 8,025 2 View
Most of the articles published in the "close-access" journals are only opened to paid authors or institutions. Good articles are therefore simile kept away from authors who wants to read but not...
08 March 2021 615 39 View
Generally, the higher operating frequency of an antenna, means greater gain. However, the gains of my proposed antenna have the opposite characteristics in the third band . Please kindly explain...
07 March 2021 3,291 12 View
I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. After full wave simulation, i am not getting desired results i.e Radiation pattern...
02 March 2021 10,223 5 View
I have designed a 24 GHz rectangular antenna on HFSS 3D model and got desired results while desing the same antenna with same dimensions I am getting resonance frequency at 27 GHz I am...
01 March 2021 4,955 2 View
Hi researchers, I am searching for some accurate way to do the circuit modeling of planar CPW-fed monopole antennas. I have gone through the literature where mostly circuit modeling is done using...
01 March 2021 7,513 1 View
I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...
28 February 2021 4,802 7 View