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# Cos Cos Theta

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cos theta , cos pic , cos phi , cos signal
32 Threads found on edaboard.com: Cos Cos Theta

## Plot Multiple Circles with multiple Transmitters

Dear fellows. I have to make M points in a circle with radius 0.1Rd 0.5R. I have the code for circle but not getting the meaning of 0.1d and 0.5d I have code for circle as follows. % Data n = 10; radius = rand; xc = randn; yc = randn; % Engine theta = rand(1,n)*(2*pi); r = sqrt(rand(1,n))*radius; x = xc + (...)

## Side lobes missing on radiation pattern

Hi, I'm trying to plot the far-field radiation pattern of a thin wire dipole antenna using the equation I found on balanis book(antenna theory, 3rd edition, section 4.5.2): E_{\theta} = j{\eta}\frac{ke^{-jkr}}{4{\pi}r}sin({\theta}){\int}_{-l/2}^{l/2}I_{e}(x',y',z')e^{jkz'cos({\theta})dz'} When the (...)

## how to plot radiation pattern in matlab

hi everybody, can anybody expalin how to make 3D polar radiation pattern in matlab? I am using UV plot where with mesh(x,y,z) command x=sin(theta)cos(phi) y=sin(theta)sin(phi) ans z=calculated gain all are NxN square matrix But I want to plot in polar form Thanks Hi, mns. This is my m-file for 3D radiation patt

## Question of partial differentiation in polar coordinates

For Polar coordinates, r^2=x^2+y^2 and x=r\cos \theta, y=r\sin\theta r^2=x^2+y^2\Rightarrow\; r\frac{\partial {r}}{\partial {x}}=x+y\frac{\partial {y}}{\partial {x}} \Rightarrow\; \frac{\partial {r}}{\partial {x}}=\frac{x}{r}+\frac{y}{r}\frac{\partial {y}}{\partial {x}} \frac{\parti

## Proof for Trignometrical ratios of 90 + theta

If you see at the unit circle: 1. rotating by 90 degrees means swapping x and y axis (that is sin and cos), then sin(90+θ)=cos(θ) 2. rotating 180 degrees the waveform repeats with reversed sign, that means sin(180-θ)=-sin(-θ)=sin(θ) then the ratio sin(90+θ)/sin(180-θ) = (...)

88856 Hello,every one I am trying to plot radiation intensity of antenna using the following code but it is giving me an error. please, help me PI = 4.0*atan(1.0); E = 120.0*PI; L=1; Io = 1; r=2; k=2*pi; theta=0:1:359; (...)

## reading materials/ tutorials/ books etc to understand I and Q signals

Hi TomJohn, Inphase and Quadrature components of a passband signal, s(t)=A*cos is I(t)+jQ(t)=A*cos(theta(t))+j*A*sin(theta(t)) as s(t)=I(t)cos(2*pi*fc*t)-Q(t)sin(2*pi*fc*t).

## Separation of real & Imaginary Part

........ Is it possible to separate this function in a+ib form. Either through MATLAB or manually. M = sqrt(sqrt((16+2.23*sin(x)^2)^2 + 0.6^2)) ; theta = atan2( 0.6 , -(16+2.23*sin(x)^2))/2 ; a = M*cos(theta) b = M*sin(theta)

## what does 45 degree phase excitation angle correspond to in scan angle?

I changed the progressive phase excitation angle (beta) to 45 degrees on my dipole array, and I got huge gain (better than the endfire 32-degree phase at 0-degree scan angle). I am not sure what the 45-degree phase excitation angle corresponds to in scan angle (theta) as when I plug it in the equation beta = -kd cos(theta), (...)

## Power Factor Correction

You havnt calculated your power facctor? cos(theta)

## Problems with Generating a Complex Exponential Wave

Hi, I'm trying to generate waves of the form, p = a*cos(theta)*exp(i*w*t), where t is the time, w is the frequency and theta is just an angle. In my VI (attached), I used exp(i*w*t) = cos(w*t)+i*sin(w*t) and formed this using the Re/Im to Complex Function. And I used four different (...)

## radiation pattern of half wave dipole

cn we able 2 find out the directivity in 2d plot of half wave dipole,....i got 8 shaped radiation pattern hw 2 obseve its directivity?? i hve given theta range from 0:pi*0.01:2*pi,.and electric field formula e=(cos((pi/2)*cos(theta)))/sin(theta) ,.i am doing in matlab If (...)

## 3-ph Induction Motor Nameplate information

The power factor (cos(theta) where theta is the angle between the voltage and the load current)

## How to calculate REAL and IMAGINARY impedance from reflection coeffcient?

simple imaginary to polar co ordinates a+jb=(sqrt(a^2+b^2))phase(b/a) tan(theta)=b/a, a=r*cos(theta), b= r*sin(theta) Hope that helps Regards Elchiquito

## 3D radiation pattern of cirular loop antenna - Matlab

Hello I have a project to simulate radiation pattern of circular loop antenna. I have D=fn(theta,phi), and I do transform from theta,phi to x,y,z by these equations: x=D.*sin(theta).*cos(phi) y=D.*sin(theta).*sin(phi) z=D.*cos(theta) (...)

## azimuth and elevation ?

how i can plot an azimuth and elevation planes for E= sin(theta).*cos(phi) or E= cos(theta).*cos(phi) or E= sin(theta).*sin(phi) etc {matlab code } ??

## horn antenna radiation pattern cos(theta)^q approximation

In reflector antenna, usually we use horn as the feed. It has been checked that the radiation patterns of the horn can be simulated as a function: \cos^q (\theta) . The power q has been chosen at each frequency to fit the horn patterns. I already have the radiation gain pattern of one horn, I am wondering how to approx i

## Does this forum support Latex equations?

I am new here, I tried writing equation in Latex and it does not work, I compare to the "Latex Commands Quick Menu and it looks the same but mine don't work. Can anyone tell me what did I do wrong? Below is the equation I wrote. Thanks Alan \sin\theta=1 \int_0^\infty \psi=\frac{\beta d \cos\phi_m}{4\pi}

## need help to solve the expression

i need a vhdl program to solve the given expression. here is the expression: PG1 = ((2*pi)/λ)*dh*sin θ * cos θ the values are 2*pi = 2*3.14 λ = 7.5cm dh = 4.28cm sin θ = sin 45 degree cos θ = cos 30 degree and the result shoould be PG 1= 125.76 degree

## help in exp function in matlab

This is a real function. Only three terms: m= -1,0,1 ==> Σ(...) = 1 + 2*cos(pi*cos(θ))

## HFSS far field variables

hi it possible plotting far field in function of sin(theta)cos(phi) and sin(theta)sin(phi) instead of theta and phi?

## HFSS far field variables

hi it possible plotting far field in function of sin(theta)cos(phi) and sin(theta)sin(phi) instead of theta and phi?

## circular array designs (beamforming)

Well, first you just need to define the array factor for circular array. LMS and RLS basically give weights that wil help in removing interference, noise or whatever. The array factor for a Uniform circular array is AF(theta, phi) = exp(j*(2*pi/lambda)*radius*sin(theta)*cos(phi-phi_n)) theta is elevation, (...)

## integration of bessel function of zero order

1/120*pi^2 integration 0 to pie [(sin(1.2420*10^7)*costheta)/cos^2 J0(k0L sin θ)sin3 dthetaI can't get the above at all. Write correctly with using (), and *. What is "k0L" ?

## Does anyone have the ability to get support from CST?

Hello, I am having a major issue with the far field excitation source file formatting. I cannot seem to generate a simple cos^q(theta) pattern file and need to get support from CST for this to see if they can supply someone with a cos^q(theta) pattern file. So, does anyone have (...)

## Element pattern question (array antenna)

Hello everyone, I would like to know if there's a software/matlab code I could use in order to convert the pattern of an antenna element to a formula that can be plotted in Matlab. For example : % element pattern of dipole antenna g(theta) = (...)

## cordic code - the verilog code

plz find the attachment of a cordic verilog code......someone can understand that code and tell me how i can use that code in finding sin and cos.....actually i have to use below loop in verilog for(theta=0;theta<100;theta++) { (...)

## Converting equations.

This will make final equation shorter cos(180-x) = - cos x

## calculating cos angle(cos theta) in 8051

hi, how to write a program forcalculating cos angle(cos theta) in 8051 assembly language thank you

## How to measure impedance of T&R ultrasonic transducers?

epilot, Adding to comments by Mansour_M: Measure the phase shift between the voltage and the current. Let Za = the value as obtained by Mansour_Ms method. Let theta = the phase shift. Then Z = Za cos(theta) + jZa Sin(theta). Regards, Kral

## Help me with solving an equation

hi can anyone help me solve this equation please I= ∫sin×(sin Θ)(sinΘ)(sinΘ)dΘ/cosΦ with the limits between 0 and Π thanks

## IP core generator problems when parameters of a core are changed

Hi, i generated a model using the sine/cos lut ip core. went with the same way u mentioned. intially giving a theta width of 4 and then regenerating it with 6. but i have not met with any error. now... have u generated the model by calling coregen from the ISE environment using " create new source". or did u activated coregen intially (...)