第五代行動通訊之帶通濾波器設計

Design and Implementation of Band-Pass Filters for the 5th Generation Wireless System

陳宥宇(Yu-Yu Chen)

指導教授 ： 潘宗龍

義守大學/智慧科技學院/電機工程學系/碩士(2021年)

摘要

本論文提出中心頻率為4.2 GHz的帶通濾波器，可應用於第五代行動通訊上，目前第五代行動通訊網路正蓬勃發展，是非常受矚目也是最主要的網路技術。目前5G技術可以分為2個大頻段，第一種是由 3GPP 定義的頻段，介於 410 MHz 至 7125 MHz，稱為 sub-6 G 頻段。第二種頻段約介於 30 GHz 至 100 GHz；3GPP 將介於24250 MHz至52600 MHz的頻率定名為毫米波頻(mmWave) 。
所以將選擇中心頻率為4.2 GHz來進行研究，我們希望可以藉由改變濾波器的線寬、形狀與耦合的數量以達到我們所需要的頻段、增加頻寬。
我們將進行以下幾種變化：(1)用單個U型共振器調整到目標頻率、(2)將單個U型共振器內環分別增加4種不同形狀的共振器進行模擬、(3)將調整好的共振器分別為3個一組與5個一組進行模擬、(4)進行4.2 GHz的帶通濾波器實作與量測。
本論文根據以上四種設計測試共完成5個不同形狀的共振器、10組帶通濾波器，並將4組具有不同內環樣式的帶通濾波器進行實作與模擬量測。實作選擇個數(N=5)且四種不同的內環，其結果可以發現四組濾波器頻率約落在4.2 GHz，實測結果都與模擬數值大致吻合。
具有矩形內環且共振器數個數5，在四組實作有最佳頻率響應，其量測頻率4.220 GHz，量測S11為-17.657 dB、S21為-3.215 dB。

關鍵字

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並列摘要

This thesis proposes that a band pass filter with a center frequency of 4.2 GHz can be applied to the fifth-generation wireless systems. Currently, the fifth-generation wireless systems are booming, and are the most eye-catching and most important network technology. At present, 5G technology can be divided into two large frequency bands. The first one, called the sub-6 G band, is the band defined by 3GPP, which is between 410 MHz and 7125 MHz. The second band is approximately between 30 GHz and 100 GHz. 3GPP names the frequency between 24250 MHz and 52600 MHz as millimeter wave frequency (mmWave). Therefore, center frequency of 4.2 GHz is selected for research. We hope to achieve the band we need and increase the bandwidth by changing the line width, shape, and number of couplings of the filter.
We make the following changes. (1) Adjust to the target frequency with a single U-shaped resonator. (2) Add four different shapes of resonators into a single U-shaped resonator for simulation. (3) Adjust the adjusted resonator symmetrically to a group of three and a group of five for simulation. (4) Carry out implementation and measurement of 4.2 GHz band pass filter.
The thesis is based on fours design testing, completing five different shape resonators, ten bandpass filters, and makes four different types of inner rings conducting and simulate measurement. Conducting choose five numbers and four different inners rings, it can be seen that the frequency of four filters are 4.2 GHz. Conducting results shows that simulate value are substantially anastomosis.
There are five resonators which have rectangle inner rings, it can shows that the best frequency response of four experiment, and the frequency is 4.220 GHz , Measured S11 is -17.657 dB、 S21 is 3.215dB.

並列關鍵字

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參考文獻

[1] 台灣網際網路維基百科，https://reurl.cc/kZvLdn

[2] 5G應用服務三大方向發展， https://reurl.cc/5ra2lz

[3] 第五代行動通訊技術維基百科，https://reurl.cc/AkDRqe

[4] 全球5G通訊頻段與運行模式，https://reurl.cc/O0DkqX

[5] J. Nieto and R. Sauleau, "Miniature coplanar waveguide and microstrip stop-band filters using spiral resonators," in 2006 First European Conference on Antennas and Propagation, pp. 1-5., 2006.