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    Patch antenna using Liquid Crystal substrate in HFSS

    Hello all,
    I am glad to join this forum. I would like to know how I can simulate patch antenna over Liquid Crystal substrate. I am interested to simulate in HFSS. Any suggesstion,Idea, Design guide or Tutorial would be of great help. I would greatly appreciate all your suggesstions. Kindly help me.
    Thanks in advance.

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    Re: Patch antenna using Liquid Crystal substrate in HFSS

    Hi sagaranoop014,
    Patch antenna over LCP (liquid crystal polymer) seems to be quite interesting. I am sorry i dont have idea, perhaps some Microwave and EM simulation experts in EDA board may help you...
    S. Vinoth Kumar


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    Re: Patch antenna using Liquid Crystal substrate in HFSS

    i think no body simulate microstrip patch antenna in hfss using liquid crystal substrate
    thats y no rply ......i hope some body help me .....



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    Re: Patch antenna using Liquid Crystal substrate in HFSS

    What is your purpose? Are you trying to use the LCD to somehow modulate the antenna function, or are you just putting an antenna in proximity to a LCD display?

    I had to work close to an LCD display with a monopole antenna once for use in shopping cart handles. There are two types of LCDs: one has a big metal shield on the back, the other does not. So start with figuring out how much metal is in there. For RF purposes, you would want one without much metal in the design, as it detunes an antenna's resonant frequency.

    I am not aware of any strong interaction between an LCD and microwaves other than high power microwaves can "activate" the LCD material. I have seen papers on a sheet of LCD being used to find microwave radiation "hot spots". So there is a visual indication, but I do not think the LCD modifies the microwaves much.

    Rich
    Last edited by keith1200rs; 1st May 2012 at 09:15. Reason: Advertising removed


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    Re: Patch antenna using Liquid Crystal substrate in HFSS

    Thanks biff44 for replying

    I was trying to simulate tunable microstrip patch antenna using liquid crystal polymer
    Substrate to achieve tunability. By applying external biasing to substarate we can achieve this
    But I don't no how I can apply external biasing to substrate.

    Thank you
    Anoop

    ---------- Post added at 09:13 ---------- Previous post was at 09:08 ----------

    is it possible in ansoft hfss ? How I can bias substrate in ansoft hfss?

    Anoop



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    Re: Patch antenna using Liquid Crystal substrate in HFSS

    Hi let me guess,
    you are designing patch antenna over Liquid Crystal Polymer.
    you would be biasing the LCP (Liquid Crystal Polymer) Based on bias, the orientation of the liquid crystal molecules of substrate will change, It would greatly affect the dielectric constant of substrate.
    I think you are interested in exploiting this property.
    S. Vinoth Kumar


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    Re: Patch antenna using Liquid Crystal substrate in HFSS

    thank u Mr. S vinoth
    You wrote exactly what i want in hfss, can u help me regarding this problem.



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