Dissertation/ Thesis
Additive Manufactured Wideband Differential Waveguide Directional Coupler and Dielectric Lens Dual-beam Antenna
| العنوان: | Additive Manufactured Wideband Differential Waveguide Directional Coupler and Dielectric Lens Dual-beam Antenna |
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| المؤلفون: | Deng, Tianhao |
| بيانات النشر: | UNSW, Sydney |
| سنة النشر: | 2024 |
| المجموعة: | UNSW Sydney (The University of New South Wales): UNSWorks |
| مصطلحات موضوعية: | Additive manufacturing, Differential waveguide, Directional coupler, Indirect TRL calibration, Dual-beam, Lens antenna, anzsrc-for: 400601 Antennas and propagation |
| الوصف: | Additive manufacturing (AM) technology has attracted significant attention in recent decades. Microwave engineers pursued breakthroughs in AM technologies to ensure various passive RF components maintain high performance while bringing innovative structures. More importantly, due to the versatility in physical structure design provided by 3-D printing, several practical limitations of traditional manufacturing techniques were overcome. The AM technologies not only enable complex designed structures but also allow a fast, time-saving process at low cost. In this thesis, A liquid crystal display (LCD) 3-D printer using stereolithography (SLA) technology and copper electroplating techniques are employed to manufacture all the designs. Recently, newer communication systems like 5G have been assigned very large frequency bands. Wideband, low-loss, and high-power capabilities have been essential parts of any microwave and millimeter-wave component design. The first project in this thesis is an additive-manufactured wideband differential waveguide directional coupler with de-embedding analysis. The proposed coupler is based on the multi-hole coupling theory in the Chebyshev response and can be excited by a differential signal or TE20 mode wave. A wide band multi-layer integrated mode transducer is also designed to test the capability of the designed coupler. The proposed coupler is a four-port component; considering the fabrication feasibility; two mode transducers connected to one side of the coupler are manufactured monolithically. Therefore, a complement to the indirect thru-reflect-line (TRL) calibration process for achieving de-embedded calculation procedures between two monolithically manufactured mode transducers is proposed for the first time. The measured results agree with the simulation and achieve an exciting performance. The proposed coupler shows a wide bandwidth of 46.8% from 12.85 to 20.7 GHz with a tight coupling magnitude of 3 dB, and a 0.14 dB attenuation at the design frequency of 16 GHz. The ... |
| نوع الوثيقة: | master thesis |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | http://hdl.handle.net/1959.4/102293; https://unsworks.unsw.edu.au/bitstreams/30e3a08f-ab3e-4108-80ed-e5425fe94d02/download; https://doi.org/10.26190/unsworks/30196 |
| DOI: | 10.26190/unsworks/30196 |
| الاتاحة: | http://hdl.handle.net/1959.4/102293 https://unsworks.unsw.edu.au/bitstreams/30e3a08f-ab3e-4108-80ed-e5425fe94d02/download https://doi.org/10.26190/unsworks/30196 |
| Rights: | open access ; https://purl.org/coar/access_right/c_abf2 ; CC BY 4.0 ; https://creativecommons.org/licenses/by/4.0/ ; free_to_read |
| رقم الانضمام: | edsbas.6375B6B5 |
| قاعدة البيانات: | BASE |
| DOI: | 10.26190/unsworks/30196 |
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