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Chen


Defence R&D Canada Ottawa

Last seen: 3 years ago |  Active since 2013

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Answered
scatter3 in log-log-log
hello Can someone tell me the 'log' in set(gca,'Xscale','log','Zscale','log','Yscale','log') is in 'natural log'n or in log1...

4 years ago | 0

Question


How awgn add white noise on complex envolope signal
Hello An I/Q baseband signal goes through Tx, the wave received by Rx at carrier (fc) with condisering receiver noise should be...

4 years ago | 1 answer | 0

1

answer

Answered
How to get received signal at the carrier when use Phased Array ToolBox
Hello HTH Many thanks for you answer! In order to do A(t)exp(1i*2*pi*fc*t). A(t) has to sampled at fs>=2fc. Please let me know...

4 years ago | 0

| accepted

Question


How to get received signal at the carrier when use Phased Array ToolBox
Hello Following code is copied from help of phased.Collector, My questions are what is 'receivedsig' signal frequency? How t...

4 years ago | 2 answers | 0

2

answers

Question


how to let elements in each column of a matrix divided by the first element in each column
is there a simple way to let all the elements in a column of a matrix divided by the first element of each column, without using...

5 years ago | 1 answer | 0

1

answer

Question


Add noise to multi-signals
I want to simulate a received signal which has three sins-wave signals at different frequencies with difference amplitudes and p...

5 years ago | 1 answer | 0

1

answer

Question


using Matlab RF toolbox to model multi-channel RF to IF downconvertor
Does someone have example to model, say 4-channel, RF to IF downconvertor with common LO? Thanks Chen

6 years ago | 0 answers | 0

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answers

Answered
How to generate complex envelop signal using chirp function
Hello Honglei Many thanks for your answer. What I want to do is that a URA gets 400 samples from the signal of a LFM(5MHz) mod...

6 years ago | 0

Question


collect 400 samples from a LFM (5MHz bandwidth) signal modulated on 18GHz
f_sweep = 5e6; fs = f_sweep * 4.121; sLFM = phasedLinearFMWaveform('SampleRate',fs,'SweepBandWidth',f_sweep,'PulseWidth',1e-3)...

6 years ago | 1 answer | 0

1

answer

Question


How to generate complex envelop signal using chirp function
Matlab chirp function will generate cosine-based chirp signal, say from f1 to f2 with 10MHz linear chirp. How to modulate the si...

6 years ago | 2 answers | 0

2

answers

Question


Generate signal with given RMSE and error distribution
Is there a way to generate a signal with a given root-mean-square-error (RMSE) and certain error distributions?

6 years ago | 0 answers | 0

0

answers

Answered
Antenna Designee with Parallel Toolbox
Thanks Manan Chen

6 years ago | 0

Answered
change unit in Antenna Toolbox
thanks chen

6 years ago | 0

Question


rotate elements in phase.ConformalArray
Hello In the following code, I designed a spiral antenna (sa), and used the sa in a cavity backed spiral antenna (CBSA). T...

6 years ago | 1 answer | 0

1

answer

Answered
Frequency Sweep using Parallel Toolbox
Great, I will try it. Thanks Chen

6 years ago | 0

Question


How to include element response in collectPlaneWave
Hello in the following code, I designed a spiral antenna (sa), and used the sa in a cavity backed spiral antenna (CBSA). ...

6 years ago | 1 answer | 0

1

answer

Answered
using antenna element designed from Antenna Toolbox in Phased Array Toolbox
Thanks Honglei I know the way you suggested. For simple or easy antenna element this works will, as the element can be quickly ...

6 years ago | 0

Question


Get more antenna property calculations in one frequency sweep
I am running a Frequency Sweep to get a spiral antenna axialRatio. Can you get other antenna results, say current, pattern, impe...

6 years ago | 1 answer | 0

1

answer

Question


Frequency Sweep using Parallel Toolbox
when I do frequency sweep to calculate an antenna property, say axialRatio, current, pattern ..., is there way to use parallel ...

6 years ago | 2 answers | 0

2

answers

Question


using antenna element designed from Antenna Toolbox in Phased Array Toolbox
Once I designed an antenna element using Antenna Toolbox, how to input the designed element in a phased array?

6 years ago | 2 answers | 0

2

answers

Question


Antenna Designee with Parallel Toolbox
When using Antenna Designer to design an antenna, say spiral antenna, is there way to use Parallel Toolbox to speed up calculati...

6 years ago | 1 answer | 0

1

answer

Question


change unit in Antenna Toolbox
Hello How to change unit in the Antenna Designer. I would like to use mil = 1/1000 inch as the unit for may antenna design. ...

6 years ago | 1 answer | 0

1

answer

Question


View helix elements the viewArray
When we view array using viewArray function, can we put real antenna element to replace 'balls' in the view. For example using ...

6 years ago | 1 answer | 0

1

answer

Question


Where to find the phased.URA steering vector equation
after defined URA using phased.URA, using phased.SteeringVector, I can get the URA steering vector. 1. where I can find the mat...

6 years ago | 1 answer | 0

1

answer

Question


How to access 'TextBox' in viewArray figure
After viewArray plot the array structure, I would like to move the position of the 'TestBox' in the figure, but I do not know ho...

6 years ago | 1 answer | 0

1

answer

Question


Move phased.conformalArray phase reference center
Once I use phased.conformalArray to create an array 1. where is the array phase reference center? 2. how to move the array pha...

6 years ago | 1 answer | 0

1

answer

Question


Generate portion of circular array elements
Is there way to generate a equal spacing array which is a part of a circular array? Or Can you use a portion elements in a cir...

6 years ago | 1 answer | 0

1

answer

Answered
move xyz coordinate to (0,0,0) of the array in viewArray
Thanks Honglei Can you show me a example on how to move xyz to the 11th element in attached. Regards! Chen <</matlabcentra...

6 years ago | 0

Answered
how to make phased.CosineAntennaElement element pattern in z-direction
Many thanks, I tried and it works.

6 years ago | 0

| accepted

Answered
how to make phased.CosineAntennaElement element pattern in z-direction
Hello David In my application, I use phased.ConformalArray. 1. there is no 'ArrayNormal' in it. 2. If my conformalArray is on...

6 years ago | 0

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