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Recent content by fan1200

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    Some DC questions about libraries and clock

    Re: Some DC quesitions the result of DC is upload. so the port of ck_ does not connet to anything. what shall I do?
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    Some DC questions about libraries and clock

    Re: Some DC quesitions TO asicganesh I design a system which has to use differential signal .So before the counter there is something whose output signals are differential signals as input signal in the counter.
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    Some DC questions about libraries and clock

    Re: Some DC quesitions How to remove ck_ as a input port? I have remove res_ as a input port. module counter(out,out_,ck,ck_,res,res_); input ck,ck_,res,res_; output [7:0] out; output [7:0] out_; wire ck; wire ck_; wire res; wire res_; wire [7:0] out_; reg [7:0] out; always @(posedge ck )...
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    Some DC questions about libraries and clock

    Re: Some DC quesitions module counter(out,out_,ck,ck_,res,res_); input ck,ck_,res,res_; output [7:0] out; output [7:0] out_; wire ck; wire ck_; wire res; wire res_; wire [7:0] out_; reg [7:0] out; assign ck_=~ck; assign out_=~out; assign res_=~res; always @(posedge ck ) begin...
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    Some DC questions about libraries and clock

    Re: Some DC quesitions To asicganesh Thank you for your answer. so you mean there is nothing about process when I change verilog HDL to the netlist. the secound question I add a file
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    Some DC questions about libraries and clock

    I am new in DC and have some questions.Plz help me. I want to change verilog HDL to the netlist,then change the netlist to layout. Now I use design vision to change verilog HDL to the netlist. Here is the first question.When I DC the circuit ,there is an Error:Could not read the following target...
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    Help--antenna modeling

    Hi everyone. I want to model the spiral antenna in a RF circuit . How should I take the effect of an antenna into account in a circuit ? I just think antenna can be modeled as and R,L,C element . Can anybody tell me detail? thanks
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    HFSS simulation about spiral antenna

    Thank you very much. When I simulate the spiral antenna,I saw two types of the port. one type is what I do ,the other type is like The both types are all right ?And whitch one is better? thank you Added after 5 hours 31 minutes: The other type of the feed structure is like...
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    HFSS simulation about spiral antenna

    Help me I am using HFSS to simulate a archimedean spiral antenna. But I am not sure how to feed the structure. I tried it with a lumped Port between the two spiral arms. It would be great if somebody could take a look. Thank you very much
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    Spiral antenna simulation in HFSS

    please help me does somebody have Archimedean spiral antenna examples? I use hfss10. Thanks
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    How can I control the impedance of the spiral antenna?

    Dear all I am a student and i am trying to design 2 arm archimedean spiral antenna@60GHz in HFSS 10. however the simulation result of s11 can not be satisfied.In hfss design, i put lump port in center of spiral, between 2 spiral arms.I want to match it with coaxial 50 ohm. so how can I...

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