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# John BG

683 total contributions since 2014

MIET 36486065
MEng Telecommunication Systems
UPC ETSETB Barcelona

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impedance matching microwave engineering POZAR chapter 05 exercise 03
impedance matching microwave engineering POZAR chapter 05 exercise 03

Waveguide Modes, tan((pi*d/lambda)-(m*pi/2))=sqrt((sin^2tetac/sin^2teta)-1)
Hi Zeynep Kahraman this is John BG <jgb2012@sky.com> 1. The equation itself can be approach in different ways, Symbolic...

plus d'un an ago | 0

How to find the first element in a vector of differing consecutive values?
Hi Russel this is John BG jgb2012@sky.com 1.- generating data N=5 a=randi([-1000 1000],1,N); b=2*(randi([0 1],1...

plus d'un an ago | 0

finding closer points to a given co-ordinates
Hi Subarna Giri this is John BG <jgb2012@sky.com> On April 30th I answered the really similar question nearest point fr...

plus d'un an ago | 0

cutting up the signal into repeating parts
Hi Sara Bitarafan this is John BG <jgb2012@sky.com> please have a look at the attached script. . 1.- Acquiring sign...

plus d'un an ago | 3

Hi Charles Naegele this is John BG <jgb2012@sky.com> 1. You are having the same result as if you were using textscan in...

plus d'un an ago | 0

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Submitted

Countdown words helper
find all words between 4 and 9 characters in input string of 9 characters in less than 29 seconds.

How can I draw smithchart ? I'm gettting an error
Hello Ali this is John BG <jgb2012@sky.com> You are using some of the functions I have written to help develop MATLAB code...

plus d'un an ago | 1

Submitted

waveguides microwave engineering POZAR chapter 03 exercise 09
TE01 cut-off frequency variations with dielectric slab filling of different thickness

How would you make a contour plot of a 3 column matrix?
Hi Louis van Herwijnen this is John BG <jgb2012@sky.com> 1.- acquiring data from the provided Excel file clear...

plus d'un an ago | 3

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how to concatenate tables stored in a structure
Hi effess this is John BG <jgb2012@sky.com> there's no need to use the command cat or vertcat. just concatenate the tab...

plus d'un an ago | 0

ode45 command matlab help
Hi Abdullaziz this is John BG <jgb2012@sky.com> 1. the ODE is simple and it can be split into 2 parts: 1000*dV...

plus d'un an ago | 0

How do I find the percentage for the area of white colour over the area of the full image?
Hi Nursyahirah this is John BG <jgb2012@sky.com> When one zooms in it turns out that KSSV answer includes a lot of grey pi...

plus d'un an ago | 0

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How to solve this simple system of 2 equation in MATLAB
Hi Abdulaziz this is John BG <jgb2012@sky.com> syms v Fx Fy D L b=[D ;L] b = D L A=...

plus d'un an ago | 1

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separating an image into two images
Hi Basma this is John BG <jgb2012@sky.com> 1.- In order to split the image as requested there's no need to convert the ...

plus d'un an ago | 0

How do I count the total number 'AA' repeats in the text? I managed to count how many times it appears in each cell, but don't know how to add it up.
Hi Nitzan Khan this is John BG <jgb2012@sky.com> 1.- According to <https://stackoverflow.com/questions/26600735/mat...

plus d'un an ago | 0

How can I plot a triangle with its altitudes?
Hi Jack Bason this is John BG <jgb2012@sky.com> I have rearranged your code to do what you asked for, please find attach...

plus d'un an ago | 0

nearest point from two matrices
Hi Busy Bee this is John BG <jgb2012@sky.com> 1.- Generating data . clear all;clc;close all N=10 Ln=...

plus d'un an ago | 0

How to find the point of intersection of a line and a curve?
Hi Venkata this is John BG <jgb2012@sky.com> In order to simplify the acquisition of data from the .csv files you have...

plus d'un an ago | 1

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Random Sampling of Repeated Numbers in an Array
Hi Masato this is John BG <jgb2012@sky.com> I have done the following corrections to your code 1.- the mismatch error...

plus d'un an ago | 1

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Submitted

waveguides microwave engineering POZAR chapter 03 exercise 13
waveguides microwave engineering POZAR chapter 03 exercise 13 1st 4 cut-offs of circular waveguide

Submitted

50 or 75 Ohm Coax: waveguides microwave engineering POZAR chapter 03 question related to example 03
Why commercial coaxial manufacturers go either for 50 or 75 Ohm Z0.

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rectangular waveguide propagation modes - microwave engineering POZAR chapter 01
rectangular waveguide propagation modes - microwave engineering POZAR chapter 01

Submitted

waveguides microwave engineering POZAR chapter 03 exercise 28
waveguides microwave engineering POZAR chapter 03 exercise 28

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MICROWAVE ENGINEERING – POZAR – WAVEGUIDES CHAPTER 03 EXERCISE 27
waveguides microwave engineering POZAR chapter 03 exercise 27

hello i need clearer circle after performing the below code help me plz
Hi Shivu Shetty this is John BG <jgb2012@sky.com> to acquire center and surface points on the image, use the attached ginp...

plus d'un an ago | 0

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Submitted

intersectN2(L1,L2) finds all N1x2 N2x2 common pairs as well as respective indices to common pairs.
intersectN2(L1,L2) finds N1x2 N2x2 common pairs as well as respective indices to common pairs.

Line of sight between points in a logical matrix
Hi Roddy this is John BG <jgb2012@sky.com> 1.- the map clear all;close all;clc S1=30;S2=30; ema...

plus d'un an ago | 2

How do I quantify this image based on area and perimeter?
Hi Tushar this is John BG <jgb2012@sky.com> 1. acquiring image A=imread('001.jpg'); h1=figure(1);imshow(A) ax=...

plus d'un an ago | 1

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