Search:

Type: Posts; User: ehsantech

Page 1 of 3 1 2 3

Search: Search took 0.02 seconds.

  1. Replies
    4
    Views
    333

    Closed: Re: Microwave amplifier, component distance

    Thank you.
    Do you have any information about the many via(s) in RF circuit design? how to calculate their hole and distance from each other?
  2. Replies
    4
    Views
    333

    Closed: Microwave amplifier, component distance

    Hello,

    I want to know how to put the bypass and blocking capacitor and inductor in this circuit?
    153978

    How can I define Capacitor and Inductor distance from the chip and their line track?
  3. Replies
    3
    Views
    290

    Closed: Re: Microwave multipier chip

    Thank you dear FvM for your comment,
    My question was something else and maybe I mentioned it badly. I want to know its better for creating a X10 frequency multiplier use a X2 and X5 or a X10...
  4. Replies
    3
    Views
    290

    Closed: Microwave multipier chip

    Hello,
    I am going to create a 10Ghz oscillator with frequency multiplier. I curious to know what happens if I use two back to back 10X multipliers and four multipliers (2X,5X,2X,5X). what is the...
  5. Replies
    4
    Views
    1,687

    Closed: Re: Shortcircuit protection circuit

    I really appreciate your comment and response. I am going through it.
  6. Replies
    15
    Views
    768

    Closed: Re: MAX485 ground isolation

    Thank you KlausSt for your help everywhere in this forum.
    153696
    I want to know where is the appropriate place for earth wire to put. Because the dc-dc converter make the voltage floating. So by...
  7. Replies
    15
    Views
    768

    Closed: Re: MAX485 ground isolation

    Thank you again for everything.
    How about the earth wire, where should I consider it?
  8. Replies
    15
    Views
    768

    Closed: Re: MAX485 ground isolation

    Dear wwfeldman, I appreciate your kindness and taking your time to answer my question. Yes, I have found another isolated max485 and a dc-dc converter to feed it and I hope it facilitates my problem(...
  9. Replies
    15
    Views
    768

    Closed: Re: MAX485 ground isolation

    Hello,
    Thank you for all useful help.
    Thank you for your suggestion, I was thinking about the isolated one as you recommended. But it is more expensive for my application.
    Can you let me know...
  10. Replies
    16
    Views
    1,258

    Closed: Re: Shortcircuit protection circuit

    Thank you for your response.
    Yes, for dropping 2A which is equal to less than 1volt is acceptable. Continues short-circuit could damage my components and also my PCB track. Both current limiter and...
  11. Replies
    15
    Views
    768

    Closed: Re: MAX485 ground isolation

    Hello back,
    Here is my circuit with high resolution.
    153654
    Based on inductive noise, short-circuit, ... I have to use optocoupler to isolate my micro-controller from high-voltage. However for...
  12. Replies
    15
    Views
    768

    Closed: MAX485 ground isolation

    Hello,
    In my circuit I used two different adapter to isolate my ARM from my remote driver(with an optocoupler)(Two different ground wires are available). Now I want to add Max485 chip to my...
  13. Replies
    16
    Views
    1,258

    Closed: Re: Shortcircuit protection circuit

    Thank you for your response. My input voltage is 24V which comes from a switching power supply.
  14. Replies
    16
    Views
    1,258

    Closed: Re: Shortcircuit protection circuit

    Thank you for your suggestion, Could you introduce me some of them if it is available in market?
  15. Replies
    16
    Views
    1,258

    Closed: Re: Shortcircuit protection circuit

    Thank you again for your comment.

    As the Short circuit happens it should turn it off and be powered-off until the short-circuit be removed and after it turns the output on.
  16. Replies
    16
    Views
    1,258

    Closed: Re: Shortcircuit protection circuit

    Thanks Klaus for your points.
    Yes I know, for my circuit I need a short-circuit protection circuit. It should power off the output if short circuit happens automatically.( for example the current...
  17. Replies
    16
    Views
    1,258

    Closed: Shortcircuit protection circuit

    Hi,
    I need a fast and simple short-circuit(or Over-voltage) protection circuit. My input voltage is 24V and max output current is 2A. How can I protect my power supply from over-current?
    I need the...
  18. Replies
    8
    Views
    720

    Closed: Re: Add new BandPass and Amplifier in ADS

    I really appreciate your help.

    How can I define my mixer specification based on a Diode+transformer?
  19. Replies
    8
    Views
    720

    Closed: Re: Add new BandPass and Amplifier in ADS

    Thanks Volker and BigBoss for your comment,

    I need to do harmonic balance to for my mixer. But I was not successful to find the S-parameter and spur table for my dipole S-parameter device....
  20. Replies
    8
    Views
    720

    Closed: Re: Add new BandPass and Amplifier in ADS

    Than you Bigboss for you comment,
    Yes, I have added a S2P component and added a s-parameter file for my amplifier. It works fine that I can see s-parameters diagrams. But How can I add NF( noise...
  21. Replies
    8
    Views
    720

    Closed: Add new BandPass and Amplifier in ADS

    Hello,
    I want to know how to add a new band-pass filter and amplifier to ads.
    for Example, I selected this band-pass filter:
    https://www.minicircuits.com/WebStore/dashboard.html?model=BFCN-8450%2B...
  22. Closed: Low price but good quality PCB manufacturer in China

    Hi,
    Could you introduce me some good PCB manufacturers in China which satisfied you in quality, price and delivery time?

    Thanks
  23. Closed: Re: Shift a line of pads and holes completely in Altium

    Thanks Fvm for your post.

    I have a lot of pads and pin and I should shift all of them, but in my PCB inspector I am not able to change (shift) the position of all pad simultaneously. As I...
  24. Closed: Shift a line of pads and holes completely in Altium

    Hello,
    I need to know how I can shift a line of pads and holes completely in Atium designer ? for examples in X axis. Altium in PCB inspector only offset the pad not holes.

    152373
  25. Replies
    1
    Views
    363

    Closed: Re: High frequency circuit design

    Hello,

    Or, Can you explain how you became

    1)a good RF engineer in designing microwave PCB?
    2)ADS user?

    And could you introduce me some good books or references you have used to deepen your...
Results 1 to 25 of 66
Page 1 of 3 1 2 3