| Summary: | 碩士 === 國立臺南大學 === 綠色能源科技學系碩士班 === 102 === For years personal wireless communication technology continues to development that people are becoming increasingly dependent on wireless communication, by the end of 2012 the global mobile users has reached 6.3 billion, and expected to 2018 the number will reach 7 billion. Meanwhile, the user of personal communication technology also has a new requirement: personal communication device miniaturization, low-power, high-frequency band and multimedia.
Although 3G networks compared to 2G network the wireless performance has been greatly improved, but there still have a lot of limitations of market challenges and to meet user''s needs, and impact by Wi-Fi, the price is cheaper and the technology is not complicated. By all these needs, we need 4G technologies to bring us faster transfer, wider band and lower operating cost.
To this end, this thesis proposes adapted to receive LTE 4G mobile broadband signal of printed antennas. Use CPW type as antenna''s design structure, the antenna length of 1/2 wavelength of design criteria. Two frequencies close to the modal broadband performance can be achieved, the antenna at the Return Loss ≦ -6 dB covered under the definition of LTE frequency band is 1790MHz to 2250MHz. It’s covering the LTE of the south America、the mainstream broadband of Asia area(2100MHz) and Eastern Europe(2300MHz). The antenna is designed on FR4 substrate, the final antenna dimensions is 50×50×0.8 mm3, the radiation patterns E-plane part of the traditional type monopole antenna 8-shaped patterns, and the H-plane part is omni-directional.
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