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Questions related to Antennas
I specified the expression of far-field pattern in CST and simulated it, but I can't see the electric field distribution on the object. Whether the electric field distribution can be observed when...
15 February 2023 5,272 4 View
Hello, Here are my settings for the phase center of my antenna. I need to know what are 1)The best values for Angular limit around Z' axis. 2)Phase center values in the left box? (0,0,58.45,...
13 February 2023 2,092 3 View
i do a research about biosensors that it detecte the tumor in humain body so i made a antenna in 38ghz frequency with 30 dB return loss but when i put the tumor and the skin layers in the...
11 February 2023 6,592 2 View
I have S11 parameter only in my design, as I have a single wave guide port excitation . How could I extract eps and mu from S11 in CST? or by matlab coding? I appreciate your help .
10 February 2023 3,717 2 View
Dear colleagues, could you suggest the most relevant review articles on MIMO radar technology , as well as classic textbooks on the basics of this technology?
25 January 2023 2,638 3 View
Hello I found in some publication that the gain and the efficiency of microstrip antenna could be ameliorated by making a slots in the ground. why the slots improve the gain and the efficiency...
16 January 2023 2,985 0 View
I am working on a metamaterial patch antenna and yesterday i got that error message "Illegal usage of S-Matrix, No impedance found". Anyone could help that issue whats related and how can ı fix...
12 January 2023 6,299 0 View
I am designing a patch antenna with coax feed for 3GHz frequency. While assigning radiation box the height of the box needed to be assigned I found it should be above lambda/4 which was around...
07 January 2023 591 4 View
Hi, currently i am working on bending the patch array antenna. I would like to rotate the discrete port, same as i did... using the bend tools -> cylindrical bend -> angle 15 degree but,...
05 January 2023 946 2 View
The absorption spectra of retinal protein shows a noise near 580 nm? Is it noise or its inherent property? or it comes from the spectrophotometer? What is the reason? Thanks in Advance
03 January 2023 9,826 6 View
I would request you to help me in drawing a line along z direction in CST Studio.
03 January 2023 7,716 1 View
Hello everyone. I am doing a CFD simulation for waste heat boiler and simulation boiling in steam drum. I used ANSYS Fluent to perform the simulation. However during the calculation section. I...
02 January 2023 4,719 4 View
CST I-solver: Why the normal type materials are not meshed in I-solver? it says just PEC materials are considered for meshing.?
01 January 2023 499 3 View
Hello everyone, I am trying to simulate the s parameter in HFSS for an spherical ice particle. But when I am clicking to result section it is not showing 'create modal solution data report is not...
30 December 2022 1,703 0 View
Can anybody recommend me some books or materials for designing EBG structures.
28 December 2022 8,230 3 View
I have an EBG structure which resonates at 2.3GHz and 4.8 GHz. But I need to change the frequency of resonation to 7.5GHz. I achieved 7.2GHz resonation with an S11 of -10dB and S21 at -3dB (this...
26 December 2022 3,987 4 View
I designed an antenna by randomly selecting the L-shaped slot on the patch and ground plane. But is there any method by which we can select a specific shape of the slot to obtain multiband...
18 December 2022 7,029 7 View
As these two tuner types (DVB-T and DVB-C) are always integrated into one and cover the same frequency range, is the conclusion that every DVB-T tuner is capable of scanning DVB-C frequencies and...
13 December 2022 3,433 1 View
I have not directly studied Hauwking's radiation, I only know what my teachers told me about it and which is constantly repeated in popular science texts. It says: If a pair of virtual particles...
02 December 2022 5,281 15 View
Hi Dear CST microwave experts and users , I want to put a transeiver antenna and e receiver antenna in Gaustav voxel human body for channel modeling study . I noticed that the voxel body tissue...
29 November 2022 10,085 1 View
I am new to simulating with HFSS and I am using the Ansys Electronics Desktop 2019 R1 version. I have as a final project to simulate (and fabricate) a rectangular array of a 2x1 patch antenna. As...
25 November 2022 4,745 1 View
Hi, I wanted to know, what is the role of things like metal shorts and vias in antenna designs such PIFAs, printed patch antennas, DRAs, etc...
19 November 2022 7,344 3 View
I'm trying to design a 4×4 Butler matrix, but the problem i have faced to select phase shifter.
17 November 2022 6,385 0 View
I simulated the coupling between the patch antenna arrays, and I found that the coupling varies when i change the height of the air box. the difference at most by 5dB. the height of airbox change...
03 November 2022 5,267 4 View