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{
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"source": [
"# Chapter14 WaveGuides"
]
},
{
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"metadata": {},
"source": [
"## Example 14.2.1,Pg.no.524"
]
},
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"text": [
"i)TE10 wave will propogate because (wl_c >wl)\n",
"Guide wavelength is 3.98 cm\n",
"Phase velocity is 39800.0 *10**6 m/s\n",
"Group velocity is 2261306.53 m/s\n"
]
}
],
"source": [
"import math\n",
"from math import sqrt\n",
"a=2.286 #in cm\n",
"wl_c=2.0*a*10**-2 #in m\n",
"c=3.0*10**8\n",
"wl=c/10**10 #in m\n",
"print 'i)TE10 wave will propogate because (wl_c >wl)'\n",
"#determination of gide wl\n",
"wl_g=10**2*(wl/(sqrt(1-(wl/wl_c)**2.0)))\n",
"wl_g=round(wl_g,2)\n",
"print 'Guide wavelength is',wl_g,'cm'\n",
"#determination of phase velocity\n",
"vp=c*wl_g/wl*10**-6\n",
"print 'Phase velocity is',vp,'*10**6 m/s' \n",
"#determination of group velocity\n",
"vg=c*wl/wl_g\n",
"vg=round(vg,2)\n",
"print 'Group velocity is',vg,'m/s'"
]
}
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