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Assignment6 - such that design frequency is 10 higher than...

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EC501_Assignment(2008) (On waveguides) 1.A parallel-plate waveguide is known to have a cutoff wavelength for the m =1 TE & TM modes of c1 =0.4cm. The guide is operated at wavelength  mm. How many modes propagate? 2. A rectangular waveguide has dimensions a=6cm & b=4cm (b>(a/2)). (a) Over what range of frequencies will guide operate single mode? (b)Over what range frequency range will the guide support both TE 10 and TE 01 modes & no others? 3.An air-filled rectangular waveguide is to be constructed for single-mode operation at 15GHz.Specify the guide dimensions a and b
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Unformatted text preview: such that design frequency is 10% higher than the cutoff frequency for the TE 10 mode, while being 10% lower than the cutoff frequency for the next higher-order mode. 4. A symmetric dielectric slab waveguide has a slab thickness d =10 m, with n 1 =1.48 and n 2 =1.45. If the operating wavelength m, what modes will propagate? 5. n 1 =1.45, n 2 =1.50 and d =10 m in a symmetric slab waveguide (a)what is the phase velocity of the m =1,TE or TM mode at cutoff? (b)what is the phase velocity of the m =2,TE or TM mode at cutoff?...
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