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    HFSS Master/Slave boundary conditions: Contact maps are ambiguous execution error

    Hi all I am trying to simulate metamaterial lens (https://doi.org/10.1016/j.sna.2010.12.004) I am able to apply the master/slave boundary conditions for the 1D case. However for the 2D case, it is showing a runtime warning as: Matching boundary process might encounter unexpected conditions...
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    [SOLVED] HFSS Metamaterial Lens Simulation validation

    Hey, So I tried the two things. With the 2D structure, I am able to get the left handed transmission peak at 2.8 GHz as described in the paper. (The HFSS model is attached) However, with the 1D structure, I am still not able to get the peak (using different number of unit cells didn't solve...
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    [SOLVED] HFSS Metamaterial Lens Simulation validation

    Hi , I have used 3 cells as in paper, but getting similar transmission response ( i.e. no left handed peak at 3 GHz). Switching to a larger number is supposed to make the lens more effective, hence tried using 4. I might well use a larger number and see if and how it is affecting the response...
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    [SOLVED] HFSS Metamaterial Lens Simulation validation

    Hi everyone, I am trying to validate Shreiber et.al. 's paper on Metamaterial lens simulation for microwave NDE (https://doi.org/10.1016/j.sna.2010.12.004). I have attached the HFSS model I am using for the validation. I am getting the normal transmission after 5.5 GHz, but unable to get the...
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    HFSS Interpolating vs Discrete Sweep (S11 match but not S21)

    Hi everyone, I am doing a simulation of two Vivaldi antennas working from 4-8 GHz separated by a distance of 500mm with PEC cylinder in between (Screenshot attached). I want to obtain the scattering parameters for them. While interpolating sweep is giving close results to discrete sweep for...
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    HFSS CSRR simulation

    Hi everyone. While trying to verify the article on CSRR based sensor , 'Complementary Split-Ring Resonator-Loaded Microfluidic Ethanol Chemical Sensor' by Salim et. al. (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5134461/) , I am not getting the correct results. I tried using both lumped...
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    [SOLVED] SMA connector modes (HFSS wave port)

    Pardon me if I am asking a trivial question, but isn't it applicable when I am specifying my boundary box as radiation boundary? I have verified some resonator structures but without specifying the boundary as radiation and results did concur. Can you please tell me whether its correct way of...
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    [SOLVED] SMA connector modes (HFSS wave port)

    okay so you use wave ports itself while simulating, defining only /one mode. Am I correct ? Also can you help me in another regard. While designing resonators, do the box sizing guideline of lamda/4 be followed as the structure is not radiating ?
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    [SOLVED] SMA connector modes (HFSS wave port)

    Hello everyone. If I want to simulate a SMA connected source to a microstrip fed patch, should I use lumped ports or wave ports? I am having this confusion as when I am using wave ports using sizing guidelines provided in the manual, a message is coming where it is showing that the port...
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    HFSS Wave port size in broad side coupled resonator

    Thank you for the help. I had one more doubt regarding modes if you could kindly clarify. As i have gone through literature, the even and odd mode impedences in a broadside coupled stripline structure differ by a large value with the odd mode impedance being significantly smaller usually. Am i...
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    HFSS Wave port size in broad side coupled resonator

    Hello everyone I need to simulate a broad side coupled transmission line structure in hfss. However I can't find any reliable source of wave port size guidlines for broad side coupled lines. Do I need to fix the waveport size by seeing the port fields or is there any other solution.If anyone...
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    [SOLVED] Complementary Split Ring Resonator Design in HFSS

    Alright I found out what my mistake was. The wave port size was small so it didn't allow any propagating modes. I am now getting correct results by increasing the port to appropriate size.
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    [SOLVED] Complementary Split Ring Resonator Design in HFSS

    Hello everyone. I am new in simulating SRR and CSRR based structures in HFSS. While trying to verify the paper "Compact Second-Order Bandstop Filter Based on Dual-Mode Complementary Split-Ring Resonator" by Ebrahimi et. al. , I was not getting proper results in S11 as well S21 values. I have...
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    Planar Resonator with Normal Electric Field Excitation

    Hello everyone. I am looking for planar resonator designs which can have an axial electric field excitation normal to the plane of the resonator. Till now I could only get Complementary Split Ring Resonators (CSSR) as the viable option. Are there any other types of planar resonators which can...
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    [SOLVED] ADS rectifier circuit efficiency and impedance matching

    Thank you very much @albbg for your guidance. Following your instructions, I was able to get a good efficiency in my circuit. Apologies for my late response. Actually I don't have a specific load requirement for my circuit hence used 50 ohms for simulation purpose. One other question if you...
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    [SOLVED] ADS rectifier circuit efficiency and impedance matching

    @albbg Thank you very much for your reply. But pardon me can you specify which anode you are talking about ? I have attached an inductor L1 of 118nH to the anode of the capacitor C2 for impedance matching. Kindly look into the results, I have posted the s11 result(less than -25 dB at...
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    [SOLVED] ADS rectifier circuit efficiency and impedance matching

    Thank you for your response. Sorry for my ignorance , but by DC path you mean a resistor to the vout I presume ? I have altered my circuit like the previous thread, adding a resistance. Still the efficiency is coming very low. I have attached the changed circuit and the results. Am I doing the...
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    [SOLVED] ADS rectifier circuit efficiency and impedance matching

    Hi all, I am getting a good S11 response for a rectifier circuit (<-20db at resonating frequency) but while simulating for efficiency using hb simulations, the efficiency is coming very low. What may be the cause of the signal not being transferred from input to output side ? The same problem...
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    ADS rectifier circuit efficiency vs input power

    Hi all. I intend to see the efficiency of a rectifier circuit design in ADS. I saw that to simulate it against frequency, I can use HB simulations. But if i need to obtain the output power or the efficiency vs input power, what needs to be done. If someone can throw some light on this, it will...
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    [SOLVED] Reactive near field vs Radiating near field for Wireless Power Transfer

    Hi everyone I want to ask, does the coupling between two antennas differ in the reactive and radiative near field regions. Also I intend to ask that for reactive near field region, inductive coupling or magnetic resonant coupling by coils is better option than wireless power transfer by planar...

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