Returns the greater of the values x and y Unwraps the angle p (in radians - default step is 2*pi) using the optional tolerance value tol (default is pi)Įlementary Mathematical Functions: ExponentialĮlementary Mathematical Functions: Trigonometry cos(x)Įlementary Mathematical Functions: InverseĪrc cosine (also known as "inverse cosine")Īrc tangent (also known as "inverse tangent")Įlementary Mathematical Functions: HyperbolicĮlementary Mathematical Functions: Rounding ceil(x)Įlementary Mathematical Functions: Specialīessel function of first kind and n-th orderīessel function of second kind and n-th orderĭata Analysis: Basic Statistics avg(x)Īrithmetic average of vector elements if a range is given then x must have a single data dependency Transform from polar coordinates (magnitude m, phase p) into complex number Phase angle in degrees of a complex number Phase angle in radians of a complex number Phase angle in radians of a complex number. Transposed matrix of x (rows and columns exchanged)Įlementary Mathematical Functions: Basic Real andĪbsolute value, magnitude of complex number Parameters in brackets "" are optional.Ībbreviation for conditional expression "if x then y else z"Īlphabetical List of Functions abs adjoint angle arccos arccosec arccot arcosech arcosh arcoth arcsec arcsin arctan arg arsech arsinh artanh avg besseli0 besselj bessely ceil conj cos cosec cosech cosh cot coth cumavg cumprod cumsum dB dbm dbm2w ddx deg2rad det dft diff erf erfc erfcinv erfinv exp eye fft fftshift fix floor Freq2Time GaCircle GpCircle hypot idft ifft imag integrate interpolate inverse kbd length limexp linspace ln log10 log2 logspace mag max min Mu Mu2 NoiseCircle norm phase PlotVs polar prod rad2deg random real rms Rollet round rtoswr rtoy rtoz runavg sec sech sign sin sinc sinh sqr sqrt srandom StabCircleL StabCircleS StabFactor StabMeasure stddev step stos stoy stoz sum tan tanh Time2Freq transpose twoport unwrap variance vt w2dbm xvalue ytor ytos ytoz yvalue ztor ztos ztoy Math Functions Vectors and Matrices: CreationĪdjoint matrix of x (transposed and conjugate complex) For detailed description please refer to the "MeasurementĮxpressions Reference Manual". The following operations and functions can be applied in QucsĮquations.
#Qucs add to equation simulator#
The easiest way to create this is with an s-parameter template as show below.Quite Universal Circuit Simulator Short Description of Mathematical Functions This is just a human readable csv file that lists the phase/magnitude(or equivalent representation) of the S11 measurement at every frequency. Once measured you will need to export a ‘touchstone’ s1p file. Try to think if you error is likely to be a significant fraction of a wavelength. As normal the accuracy you need for this is dependent upon the required frequency. If we design a matching network it will be assumed that this is where we place our components. We must be very careful to understand the calibration plane of tour antenna.
However I will highlight one critical point.
#Qucs add to equation how to#
I won’t go into detail here about how to measure an antenna as this was covered in my previous posts. The Device Under Test could really be any device, but as I am an antenna geek, lets assume its an antenna. Once you get to grips with the basics here, you can always experiment in QUCSstudio with alternate components. However it is possible to use alternative components such as transformers, transmission lines, or even resistors as part of an matching network. Of course, I had totally forgotten!!! But lets go through it again.Ī matching network is normally a network of inductor or capacitors selected to convert from one impedance to another. I was asked in the comments about exactly to do this. This could be used to quickly design antenna matching networks for instance. In my last blog post I alluded to the fact that you could take s1p touchstone files generated by nanoVNAsaver and use this to automatically calculate/simulate a matching network in QUCSstudio.
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