Question

Design the dimensions of an air-filled waveguide to be used for transmission of electromagnetic power at 10 GHz. This frequency should be at the middle of the operating frequency band. The design should also allow maximum power transfer without sacrificing the operating frequency bandwidth (see the previous problem). (Note that from Prob. 2, the maximum power that the waveguide can transmit without suffering from dielectric breakdown of the air is proportional to the cross-sectional area ab.) Find the maximum time-average power that the waveguide can transmit. Use a safety factor of 2 (hence, the maximum value of the electric field should not exceed E/2). The breakdown field strength E, in air is assumed to be 3x10° [V/m). a = 2.25 [cm], b = 1.125 [cm], P = 281.7 [kW]

Answer 1

This research suggests a multilayer printed circuit board technique for an air-filled substrate integrated waveguide (SIW).

It is particularly relevant for millimeter-wave applications, which often call for low cost, low loss, and great power handling performance. This three-layered, air-filled SIW enables significant loss reduction and improved power handling. A extremely compact, high-performance, low-cost, and self-packaged millimeter-wave integrated system can be created by using FR-4 as the baseband or digital circuits in the top and bottom layers of the system. It is demonstrated that over Ka-band (U-band), the air-filled SIW reduces losses by a mean value of 0.068 dB/cm in comparison to its dielectric-filled counterparts based on Rogers substrates RT/Duroid 5880 and likewise 6002.

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https://brainly.com/question/27162243

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