隨著有線電視(CATV)的普及發展，人類對生活品質的要求提升，目前的有線電視(CATV)頻道在不久的將來就會出現不足的狀況，為了未雨绸繆，因應將來所需及改善偏遠地區因經過長途傳輸，信號微弱而造成收視不良之狀況，因而興起了此項研究計畫，希望能藉此拋磚引玉，引起有線電視(CATV)業者及相關單位的重視。
本篇論文之研究，使用Wilkinson電力分配及組合器，微帶線及輸入阻抗的匹配技術，將CATV之高頻放大電路由一般使用的頻帶範圍 50 MHz 到950MHz 延伸到2 GHz (or) 2.6GHz以上， 讓可被放大的有線電視頻道更為寬廣。該電路因為使用了微帶線的技術，可以使被動元件的數目減少，印刷電路板的結構更簡單，使用面積更小，即可以節省成本又可以使產品變得更為輕薄短小，相當適合於室內使用。 本裝置有 10 dB的增益及良好的輸入反射係數(-10dB)，是一個經濟實惠的產品，值得深思將來產品化的可行性。

With cable TV (CATV) the popularity of development, human demands for improvement of quality of life, the current cable TV (CATV) channel in the near future there will be less than the state, in order to take precautions in response to future needs and improvements in remote areas due to long-distance transmission, the signal is weak and the poor ratings caused by the situation, the rise of the research project which sought to initiate, lead to cable TV (CATV) industry and related units of attention.
This paper emphasizes the micro strip technology which can use MSub1 (MLSC) to replace the inductor and MSub1 (MLOC) to replace the capacitor in the circuit for saving the components and easy to PCB layout with cost saving. I think that is a contribution to the electronic industry field also. The accessory device is the power divider and combiner, which can be combined together with the design to obtain a complete product for CATV application.
The purpose of this paper is applied to improve the existing cable bandwidth from 950MHz to 2.6GHz with minimizing device. Which really extend the future possibility of CATV system to have more widely bandwidth with plenty entertainment TV programs. In this design that we use RF Amplifier Integrated Circuit with separate low band from 50MHz to 1000MHz and high band from 950MHz to 2.6GHz to form a wideband RF amplifier system as bandwidth 50MHz to 2.6GHz. Besides, it also reduces the cost of the device, and it’s more convenient to be installed in the inner house. The device has about 10dB gain and good input reflection coefficient which can be a producible product in the future.
The low band frequency response from 50MHz to 1GHz is very flat, but 1.4GHz is also reachable in the low band RF amplifier. As to the high band RF amplifier that is flat from 950MHz to 2GHz, but it has a little bit dB down above 2GHz to 2.6GHz. As we know that the high frequency RF amplifier design is very difficult but we can do it as well.

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