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Questions related to Antennas
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 5,519 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 1,378 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 1,757 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 7,772 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 6,227 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 899 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 5,261 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 3,264 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 7,177 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 1,319 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 7,217 9 View
is there any way to find the spillover and taper efficiency in CST for reflector antenna ?
16 April 2021 8,050 1 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 7,993 2 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 3,267 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 10,191 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 4,924 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 7,482 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 4,756 7 View
Hello everybody! I have a problem with developing a compact antenna for the 1MHz-5MHz frequency range. Tell me what type of antenna can be used and what books and articles to read to perform this...
28 February 2021 8,163 4 View
For Ns = 1, where Ns is the number of streams per user, the beam steering vectors are calculated by finding the array response vectors corresponding to the largest effective channel gain, i.e,...
26 February 2021 9,974 4 View
Dear everyone ,, i am new on ADS and i need help please I follow the paper (Design of an Efficient Rectifier Circuit for RF Energy Harvesting System by Parna Kundu (Datta), Juin Acharjee and...
26 February 2021 6,758 2 View
Greetings to all of You! I have searched some research papers for the designing of a proximity coupled patch antenna. Researchers are talking about the impedance bandwidth of the antenna but...
25 February 2021 8,083 3 View
Dealing with a helix antenna, made with flexible material and not rigid like using a PCB board or wire. At the beginning of the helix is too close to the ground plane, causing coupling. How can I...
22 February 2021 4,860 3 View
Dear All, I will start my PhD maybe this year regarding phased array antennas. I'm interested in to find more detailed information about 3D phased array antennas and 2D phased array antennas. Then...
22 February 2021 728 3 View