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Hi guys. I am simulating a CPW with an extra SiO2 layer. the 2 wave ports are set to touch the two opposite surfaces of the trace. I first looked my s11 parameter, it's below -20dB, which seems all right. However, when I checked the z11 plot and found the real part is not (...)
add SSPCON1=0; in the beginning of the while loop also. Did you remove SSPCON1 from the main code ? Sorry, but your suggestions are completely wrong. SSPCON1 will be written once during initialization and usually not touched any more in SPI operation. Review PIC18 datasheet! the post #1 code looks (...)
the assumed first order gain characteristic isn't bad as an estimation. there's an additional cascode stage pole, but you can probably ignore it. the other expressions are however only right if C2 >> Cf, otherwise the amplifier output impedance matters. (...)
Hi, I've downloaded a project with a testbench where LINE type is used. I read variable line_in : line then if(line_in(1)='.') then... I don't understand this handling very well. the line_in object is a pointer to a characters string, right? then line_in(1) means the first (...)
first re-define what Z12 is in your mind ...You'll find the right answer.
first you want to know what the short circuit current really is. It must be above the 400mA and may well be above 1.6A depending on the design values. the duty factor looks to be minuscule and if you are on the right side of Abs Max ratings, should not impact reliability. (...)
You shouldn't expect others to do your homework, but help is surely available. first step would be a clear specification. You can design a divider to give fractional result bits (bits right of the decimal point), however this has nothing to do with floating point number representation. Floating point involves an exponent, (...)
first the element should be right-hand or left-hand circular polarization. then design the feeding network for the array. You could follow the example in the antenna books or papers.
I design a floating point multiplication. After multiplying the mantissa of multiplicand and multiplier is the normalize step. I need to detect the first bit 1 from left to right of a 48-bit series. For example: 01 01010110000000000000000 0000000000000000000000 from left to right, i (...)
How do you expect someone to help you fix the problem if you have not posted any code, or even reported precisely what is or is not working ? If you on the other hand are requesting a ready-to-use code, this is not the right way. You should first try to turn ON at least one of (...)
I think that your more likely to get one if you identify which one. Vertical, right angle, male, female, make & model ???? ISTR that they are not all exactly the same, one manufacturers does not always fit anothers.
It seems that there is normal I2S, left justified I2S and right justified I2S. the left and right justified make sense. However, the normal I2S has something peculiar about it. Once the LRCK changes polarity, the value of SDATA on the (...)
Hello Klaus! Oops, sorry! You're right! And sorry for the original poster for wrong info! Dora.
A PI error amplifier would be my first guess. You didn't tell about the phase shifter range. Generally, an additional comparator for positive or negative phase difference and phase reversal switch are required to push the phase difference to the right part of the detector curve.
Hi, the left top picture is a step response of a simple first order (analog) lowpass filter. Like an RC filter the left bottom is an impulse response of the same filter. the right picture is a (theoretical) impulse response of an sinc filter. Sin(x) / x response. (...)
Hello, i'm a new in design antennas, and having some problems in repeating experiments. I dont now how correctly feed double slot antenna. 129544. the arrow indicates the attachment detector. I calculated the two cases, and the first is right for me, but it does not work. But second is (...)
first, check that the op amp output is trying to do the right thing. Startup is a potential issue, so is swapping phase on the feedback. Next check that for any decent gate drive, the PMOS current sources are capable of pushing the needed current onto the (...)
A servo is really the answer. It is able to move quickly or slowly. Action is firm, with no loose play. It can be sturdy enough to move the head (perhaps needing to be counterbalanced), and hold position. It always knows its center position automatically, and goes there when you send 1.5 mSec pulses. Other than a servo, (...)
based on wireless technology Does it have to work by radio frequency? Or can it be by light transmission? Or ultrasonic? Do you want to make a homebrew radio system? It involves effort and knowledge. As a first project it will be difficult to make it work right. Both transmitter and receive need to be adjusted to the same frequenc
IF YOU HAVE USED A DIFFEENT DEVICE OF OPP. POLARITY , theN INVERTED the SIGNAL , theN the DELAY WILL BE TOO MUCH, -THOSE LINEAR CHIPS ONLY HAVE SMALL DELAYS (SORRY ABout capitals) should use the circuit they prescribe. I would go on their free ltspice sim (...)