How can I measure voltage at the port of an antenna in HFSS?

I have a plane wave incident on a horn antenna and would like to measure the voltage at the port of the antenna? How do I go about it? Waiting for some input.. Regards,

03 April 2017 5,897 9 View

What is optimum height and width of a rectangular port in HFSS?

Hello, I have a confusion with assigning a port in HFSS. What should be the height and width of the port for printed antennas, lets say a patch antenna or any other antenna. When I keep the width...

02 March 2017 4,223 4 View

How do I design phase shift array using circuit elements to control the pahse shifts?

I am interested in designing a beam steering planar array and would like to know a few techniques to introduce phase difference. I know a transmission line of different lengths could be used to...

05 June 2016 4,769 6 View

How can electromagnetic band gaps (EBG) be used efficiently for patch antennas?

04 May 2016 1,747 5 View

How to use "Activate slit condition on interrior port" in COMSOL??

I am designing a simple pyramidal horn antenna in COMSOL without using symmetry planes. When I try to excite it using a rectangular port it says I need to activate the slit condition. I am not...

01 February 2016 1,757 1 View

How do I set up free convection in comsol?

I want to see the effect of free convection on a patch of water enclosed inside a solid (Calcite) when it is heated by a dipole antenna. Currently, I am simulating the antenna in a separate study...

10 November 2015 5,777 2 View

How do I model conduction and convection in heat transfer in solids interface?

I am trying to model heat flow in a material using the Heat Transfer in Solids interface of COMSOL (5.1). I would like to include conduction and convection as well. Guidance needed for a new...

08 September 2015 1,340 5 View

How do I find 3dB bandwidth in COMSOL?

Hello, I have simulated an antenna in COMSOL. I got the radiation pattern and now I am interested in finding the 3dB beam width of the radiation pattern. Any suggestions? If it is not clear from...

08 September 2015 9,545 2 View

How to solve Convergence error due to singularity in COMSOL?

I am trying to model heat flow in a solid material. I am using periodic ON/OFF of the Electromagnetic source (Antenna), via a rectangular pulse. The pulse is ON for 12 hours and OFF for 12 hours,...

08 September 2015 9,636 0 View

How can we select boundaries, edges, domains in COMSOL?

I am new to COMSOL and I would like to know how to find out the number of boundaries, edges and domains? How does COMSOL assign the numbering. For example, if I want to assign a material to my...

07 August 2015 5,765 2 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Is there any tutorial for comsol general projections?

Hi, im trying to make a projection in a 3d comsol model. I have a non uniforme chanel and my intention is to get the average tempreture in the y-z cross section and se the average tempreture...

02 March 2021 4,624 4 View