Search Engine www.edaboard.com

Orthogonal

239 Threads found on edaboard.com: Orthogonal

chaching the Gain of each polarization

Hello , the Sinuous antenna that i have built is dual polarized because it hase two orthogonal dipole feed,i have attached the diagram and farfield results of the simulation. this antena is dually polarized, i have used ludwig 3 on vertical /horizontal as shown in the attached photos. how can i interpret the ludwig 3 diagram and get the direct

shifted orthogonal modes waveguide port

Hello,i would like to have the two orthoghonal modes TE10 TE01 and shift them 90 degrees to create circular polarization in the CST menu i can only choose the number of modes but i cant know which modes specificly will be generated.I can choose the polarization angle so by choosing two ports and 90 degree polarization i will only get two ortho

Matching Pursuit and Orthogonal Matching Pursuit

What is the difference between 'Matching Pursuit' and 'orthogonal Matching Pursuit' ?

Time and Frequency domain representation of spreading sequences

How can I generate orthogonal spreading sequences in Matalb in frequency and time domain? What properties a set of spreading sequences should have ? e.g in time domain x=randi(, 10,1); % time domain signal SprdSeq= rand(20,20); %% HOW to GENERATE orthogonal ? Spreadedsignal= SprdSeq *diag(x); In frequency domain should I take

Can surface current distribution tell which type of polarization we have ?

Hi, In order to obtain circular polarization you must have two modes spacially orthogonal and with a 90° phase shift. These two modes are usually distributed in the same manner in the space (for the electric or the magnetic field). The magnetic field can give us the surface current ( Js = H^n) and consequently you have the two distributions of curr

Rayleigh model. X and Y independent?

When you write h=X+jY then X and Y are orthogonal. And since they are Gaussian random variables then they're independent.

ASIC Suggested Books

design and verification are quite orthogonal, and one would usually focus on only one. for design, I would first learn verilog and synthesis. You can go about using tutorials, books might not be the best source. for verification, I think Bergeron is a good author. OK, what's the difference between design and v

Drawing lines in Altium schem symbol library

Hello, I am trying to draw a small arrow in Altium, and obviously want the line to be able to go in any direction, not just orthogonal , any ideas??this is absolutely simple to achieve in Eagle?no idea in Altium

Can we design a 45 degree hybid coupler?

A hybrid coupler exploits the properties of orthogonal E and H fields. At 45 degrees, they are not orthogonal.

[moved] please want help HFSS Floquet port unit cell

Hi sztr, You need to do pretty much what HFSS is telling you to do: ensure that the floquet port is touching orthogonal Master/Slave boundaries. There are some good tutorials included with HFSS that explain how to use Floquet ports.

Multi Dimensional Constellation and Shaping Gain

Multidimensional constellation is a general expression for orthogonal constellation. Because if two signals are othogonal to each other, you should define at least two dimensions to identify these 2 signals. With that approach, if you arbitrarily define a modulation scheme that assigns your signals to some points and if you cannot represent all the

MIMO Orthogonal Frequency Division Multiplexing with Index Modulation

i have been working on MIMO OFDM with index modulation. can u please help me with the matlab code for it...?

Untheoretical Frequency Change

How have you configured your microstrip , stubs and slots for polarization and reactive loading? Have you considered linear and circular polarization with two near-degenerate orthogonal resonant modes with equal amplitudes and a 90◦ phase difference?

VCC signal on ground plane

First lay tracks that are controlled impedances without vias and good ground planes with microvias as needed. Then partly lay tracks dominated in one direction and orthogonal ones. Then repeat visa versa on other side for balance of signals. Complete tracks with orthogonal connections and vias where required. Although not perfect, and planning i

Combine results in CST in one port

Hi every one, I am simulating a horn antenna with a wave port with two orthogonal modes (to get circular polarization), the combine option in Post processing tab is not available for me. it gives me this warning:At least one propagating mode is not considered at port 1. Can anyone help me please? Thank you very much

Basis functions(why sine and cosine only)

We use sine and cosine as basis functions. Why we can not have more than this. May be other than this. For orthogonal implementations we are dependent on orthogonal frequencies and these two basis function. Is there any process by which we can create or consider more than this. Then we can have more spectral efficiency.

How to fiix LUT inputs?

When using cyclonexx_lcell_comb, the inputs may be reassigned by the fitter. As far as I understand, this done due to routing constraints, the routing options aren't orthogonal.

Calculate impedance PCB tracks

The Saturn PCB toolkit has been mostly suggested for similar purposes. It should be noted that the traces on the said layers are no clean asymmetrical stripline because the impedance is affected by traces on the other signal layer. You get best results by defining orthogonal routing directions on the adjacent layers.

SC-FDE and OFDM STBC

Hello all, Why when we use space-time block coding (STBC) with single-carrier frequency-domain equalization (SC-FDE) we use a permutation matrix, while we don't use it in case of orthogonal frequency division multiplexing (OFDM)? Thanks

antenna and balun fabrication

Probably may be two orthogonal antenna, with two ports connected to a 3db coupler. In these case you can see right or left circular polarization without looses.

can a wave be polerized RHCP and LHCP at the same time?

In principle yes, it all depends on the way you look at it. You can represent an right hand or left hand circularly polarized wave by a superposition of two orthogonal linear states with some phase shift. Conversely you can represent a linear wave as a superposition of RHCP and LHCP states. It's simply a different orthogonal basis. See the wikipedi

i need a design procedure for hfss v13.0

U can used the option of a cylinder and give it 3 sides in its properties two such tianges if u place orthogonal u will fet a bow tie shape then remaining process is same as for any other antenna. hope it helps u:thumbsup:

Basis Pursuit or Orthogonal Matching Pursuit Algorithm [MATLAB]

Hi, Anyone has a MATLAB code for Basis Pursuit or orthogonal Matching Pursuit Algorithms to solve a sparse problem Ax=b? Thanks

CST Cable: just wanted to simulate 2 wires...

Hello, As I was getting strange results with CST, I decided to simplify my simulation. It is now a simple loop 1mx1.27mm that I irradiate with a plane wave 10V/m and 10MHz (figure attached). E field is longitudinal => no effect. H field is orthogonal: its action is easy to calculate by using e=-S.dB/dt => around mV accross the 50 ohm loads at th

orthogonal excitation and periodic boundary condition in hfss

Hi all, I am simulating a transmit array unit cell designed in a paper in hfss and I'm quite new with it. It is said in the paper that the unit cell is excited by two orthogonal and linearly polarized waves in normal direction. Also, it is simulated with HFSS using periodic boundary conditions. How can I apply these two things in hfss? The unit

Magnetic shielding for wire

They help a lot. But have you tried a big CM choke around cable and use balanced paths, minimal loop area and orthogonal routing to interference?

Orthogonal Excitation in HFSS

Hi all, I am simulating a transmitarray unit cell in HFSS. my simulation is based on a paper presented in a conference. In the paper it is said that the unit cell is excited by two orthogonal and linearly polarized waves in normal direction. the structure is one glass substrate and two split ring slot metal on both sides of it and I put it in a

how can I recognize measured fields whether reactive or radiative field from a near

In reactive near field the electric and magnetic fields are not orthogonal and any object placed in this region will distort the antenna pattern. This is one clue that could give information where this field stops when moving far from the antenna. For doing this, have to do a far-field antenna pattern measurements, before and after placing an objec

Hi all! I have designed a square patch antenna with two orthogonal feeds. The 2D radiation pattern is not directed to 0 degrees. It is tilted to certain angle. Can anyone suggest any possible solution to make it to 0 degree? Thanks

filter obtaining low pass filter in OFB

Hi! I have a doubt regarding the concept of orthogonal filter bank. In case you're having filter P(w)=1+cosw, we all know that could be used to obtain low pass filter h0(w)=(1+e^-jw)/sqrt(2) using the relationship P=|C|^2. My question is when you're given even more complex filters like P(w)=1+e^jw, how are you going to check whether this filter

Find RMS Voltage from FFT

The first equation corresponds to the nature of orthogonal signals, what's the reasoning for the second one?

Orthogonal Cross Correlation

I want to use cross correlation technique to obtain relative phase difference between Current & Voltage waveform of the same frequency. I was reading following technique where U1(k) which is the discrete voltage across the piezo-transducer and I(k) is the discrete current. U2(k) is obtained by shifting U1(k) to the right by No samples t

6 layer stack-up recommendations

In order to avoid possible cross-interference between neighbors signals, it is very important that routing in the adjacent layers are alternately mutually orthogonal one each to another, as follows: Mounting TOP ( Vertical ) GND signal ( Horizontal )*** signal ( Vertical ) VCC Mounting BOTT

MIMO dielectric resonator antenna

is it necessary to excite orthogonal modes in a rectangular DRA for MIMO application? or we can excite non orthogonal modes as well

KVL for Rms voltages

AC quantities are vectors in a two-dimensional vector space, usually respresented by complex numbers. In the present case both voltages are orthogonal, summing like the legs of a right-angled triangle.

HFSS Angle Parameter

Hello everybody. Does anybody know how to input an angle parameter in the design in HFSS? I mean, there are all kind of automated drawing shapes, but none accepts an angle as a design parameter. What I need to do is draw a parametric orthogonal triangle.. Is there another way to do that besides drawing equation lines?? Thanks in advace!

Generating CDMA codes for different symbols of the same user

Hello, I know that in a CDMA system every user should use mutually orthogonal codes so that data from different user can be separated in the receiver and we can create these codes, for example, using Walsh/Hadamard matrices or PN sequences. My question is, if a user is transmitting e.g. 100 symbols and there are 10 transmitting us

orthogonal space time block coding

please i need code shows graph the result of simulation of no diversity(1Tx,1Rx)(BPSK),OSTBC(4Tx,1Rx)(QPSK),Alamouti(2Tx,2Rx)(BPSK), Maximal-Ratiocombining(1Tx,4Rx)(BPSK) and Theoretical 4th ?orderDiversity(QPSK). please help me i need code to my project

Help with OFDM:trouble with orthogonality

don't get confused by the word "orthogonal". Here's what happens in simpler (?) words ... and based on understanding of the Sinc function. if you space the subcarriers from one another by any amount equal to the reciprocal of the symbol period of the data signals, the resulting sinc (sin x/x) frequency response curve of the signals is such that

Hamming code errors DETECTION only..

Hi Nego Linear block codes can be represented as c=mG where G is the generator matrix. Another way to characterize codes is by the 'parity check matrix' which is the matrix of basis of codes orthogonal to the codes c=mG i.e. cH^T=0 Just multiply the receive code word by H^T. If

HFSS FSS polarization simulation

If your unit cell is either rectangular or square, then by solving for the first two modes (orthogonal polarizations), assuming you need no more than that, in the Floquet port you know all you need to know about the polarization dependence of a structure at a given angle of incidence. If your structure symmetry is aligned with the modal excitation

how i can deploy 100 sensors in a circle with radius 100 m

my project is coverage problem ...randomly place place sensor node in any orthogonal polygon region and every sensor node draw a circle base on any radius .....plz help me .....n give me code...

how i can deploy 100 sensors in a circle with radius 100 m

how i can deploy 100 sensors in a circle with radius 100 any orthogonal polygon region ....plz give me code ....plz help email

Interconnect Parasitic study and comparison software

You can study all the parasitics by examining coupling capacitance and coupling inductance with layout effects. orthogonal layout is worst case. random vector layout is better case but more complex to satisfy layout with fewest vias. Interleaved ground tracks rob coupling energy.

S11 S21 interpretation when using square/ring resonator w/without enhanced coupling.

Here is "square ring" resonator, simplified without bends. orthogonal feed for even operation. I can see some resonance at 12.7GHz 88902 To decrease insert loss, enhanced coupling lines are proposed in few sources over internet. I add som lines: 88903 Return loss (S11) is increased, i guess it i

How much is phase delay of ring resonator fed by two orthogonal feed lines? 180 deg?

I read papers on ring resonators and filters. There is something keep me dizzy: if i take simple ring resonator, perimeter = wavelength, and phase delay would be wavelength/2, so 180 deg (i hope it is right?) As feed lines are at left and right sides of the ring, wave will propagate 180 deg on both sides (assume coupling gaps are small). Nulls at

find orthogonal vectors

Two vectors are orthogonal one each other if their dot product is zero, then I think you just have to find a vector (y1, y2, y3) so that: x1*y1+x2*y2+x3*y3=0 As said by Shug, in the space there are infinite vector orthogonal to a given one. If you don't have other costraints I think you can arbitrary assign a value to two variables among y

Full contact and orthogonal contact in design for thermal desipation.

Hi, I need a help, what is the impact if i use full contact in plane to ground pin or power pin instead of orthogonal connection ..? Some people prefer orthogonal connection is better then full contact. i am thinking if full contact heat will flow all the area.. and dissipate fast.. am i wrong ?

orthogonal or orthonormal characteristic

i have read in a book that characteristic of an orthogonal matriks is (A'.A) = I, with A is an matrix, A' is transpose of A and I is an Identity matrix, the characteristic shows that A must be an orthonormal matriks,and my question is, can we say that every orthogonal matrix must be an orthonormal matrix?