Search:

Type: Posts; User: baby_2

Page 1 of 4 1 2 3 4

Search: Search took 0.01 seconds.

  1. Closed: stm32f103c8t6 vs stm32f103cbt6 vs stm32f103c8t6 vs stm32f103re6

    Hello,
    I will appreciate if you could let me know the differences between stm32f103c8t6 vs stm32f103cbt6 vs stm32f103c8t6 vs stm32f103re6?
  2. Replies
    3
    Views
    495

    Closed: Re: HanRun RJ45 pins postition

    Thank you so much for your help. Could you help me to design dp83848I?(http://www.ti.com/lit/ds/symlink/dp83848c.pdf)
    In the datasheet it doesn't mention the value of these parameters directly....
  3. Replies
    3
    Views
    495

    Closed: HanRun RJ45 pins postition

    Hello,
    In this picture I can't find the X position of pins of 1,3,5,7. I will thankful if you could help me. HanRUn911105A
    155815
  4. Replies
    1
    Views
    137

    Closed: Help me to detect an IC in a circuit

    Hello,
    In an encoder I guess this highlighted IC damaged but I can't find its part number correctly to see its datasheet. I am grateful if you could help me.
    155795
  5. Replies
    1
    Views
    229

    Closed: Class B wave form problem

    Hello,
    I am going to see the output waveform of class B amplifier. First of all, I tested this circuit
    154995
    For low frequency (200Hz-200Khz) I see this waveform at the output.
    154996
    But by...
  6. Replies
    8
    Views
    446

    Closed: Re: Frequency Multipier in ADS

    Thank you, how did the 4th harmonic of (354Mhz) generate with that high amplitude? the frequency multiplier mentioned it has low harmonics and IM components.
  7. Replies
    8
    Views
    446

    Closed: Re: Frequency Multipier in ADS

    I changed and made my circuit bigger. Here is my present circuit (double mixer) (5X , 5X) I set my input frequency order in harmonic balance simulation about 150.
    154830
    As you can see in the first...
  8. Replies
    8
    Views
    446

    Closed: Re: Frequency Multipier in ADS

    Yes , you are right. I made a mistake not to take into account the "Input" and "Output" words.
  9. Replies
    8
    Views
    446

    Closed: Re: Frequency Multipier in ADS

    I really appreciate your help



    I created a Data items and add LHA-13HLN s-parameters touch stone so it doesn't have any supply voltage. However, I check the circuit by removing the...
  10. Replies
    8
    Views
    446

    Closed: Frequency Multipier in ADS

    Hello,
    I have designed and simulated a frequency multiplier in ADS but my result is not acceptable. My Frequency multiplier conversion loss is shown below.
    154764
    Here is my circuit.
    154765
    Here...
  11. Replies
    8
    Views
    812

    Closed: Re: Reliable GPS and Compass sensors

    Dear paulfjujo, I really appreciate your explanation.
    Some of my friends used Ublox GPS and they told me, in some situations they need more than 2 minutes to track the GPS satellites or need to...
  12. Replies
    8
    Views
    812

    Closed: Re: Reliable GPS and Compass sensors

    Thank you KlausSt,
    Yes you are right, but as you get familiar with different sensors by reading their datasheet you can make a good decision. I am grateful if anyone can help me.
  13. Replies
    8
    Views
    812

    Closed: Reliable GPS and Compass sensors

    Hello,
    I want to know what is the best and reliable GPS and compass sensors to connect to a micro-controller?

    Thanks
  14. Closed: Re: Bypass dc signal which is accompanied with a low frequency sinusoidal signal

    Thank you for your response. This signal is output of a mixer which is going to connect to an op-amp( in buffer configuration)
  15. Closed: Bypass dc signal which is accompanied with a low frequency sinusoidal signal

    Hi,
    I have two signals that I need to block one of them (DC signal). The input signal is something like this:

    Vin=VDC+Vac*Sin(2*pi*5*t)

    1 millivolt<VDC<5 millivolt , .01 millivolt<Vac<.05...
  16. Replies
    6
    Views
    2,194

    Closed: Unknown device in a high voltage chopper

    Hello,
    I am curious to know what are the circled devices.
    152883
    Thanks
  17. Closed: Re: Please help me understand how to design a dual band antenna on hfss software

    Hi again,
    I recommend the volker@muehlhaus's recommendations. However, for dual band microstrip antenna it is not a common or simple way to use electrical switch because you can provide a dual band...
  18. Closed: Re: Please help me understand how to design a dual band antenna on hfss software

    Hi again,

    I don't say that you are week at antenna designing but I said improve yourself.
    It is not easy for a newbie to use complex structure to build the first dual band antenna with microwave...
  19. Closed: Re: Please help me understand how to design a dual band antenna on hfss software

    Hi djsdre,
    Your question is very general and without any knowledge of your purpose, I think no one can help you.

    I suggest that:
    1) Try to understand the main parameters and theories of antenna....
  20. Closed: Re: CST dual polarized H-slot antenna is very well matched but has poor total efficie

    Hi,
    My CST version is lower than your installed CST, I have not been successful to open your CST file. However, your have used FR-4 substrate for frequencies more than 2 Ghz? its loss tangent...
  21. Replies
    1
    Views
    350

    Closed: Balanced modulator output function

    Hi,

    A system block diagram is shown below.
    150243

    Where S is a Sinusoidal function and S<90 is the same as S signal whose phase is 90 degree lag. And C is another Sinusoidal function with a...
  22. Closed: Help us to create a wonderful antenna community

    Hello,
    My friends and I graduated from university in field of engineering some years ago. So far we have not been successful to achieve a good job or earn enough salary that we can rely on. During...
  23. Replies
    0
    Views
    435

    Closed: CST measurement error (wrong lenght)

    Hi,

    Two days a ago a designed a model in CST software with specific which was defined by some variables. However, after setting and removing the face constraint one the shown face, CST measurement...
  24. Replies
    0
    Views
    1,517

    Closed: Ultra low-power GSM/GPS/GPRS module (Chip)

    Hi,
    I am looking for a low-power chip which contains GPS/GSM/GRPS to conserve my battery-powered device. I am going to connect my micro-controller to this chip in order to control its function so...
  25. Replies
    3
    Views
    663

    [SOLVED]Closed: Re: Plot problem in ADS -label each line

    Thanks Bigboss for you comment.

    Is there any other way to make them color automatically with different color? because it takes a lot of time for more than 10 lines.
Results 1 to 25 of 95
Page 1 of 4 1 2 3 4