多功能功分器一體化研究
發(fā)布時(shí)間：2018-08-24 14:47
【摘要】：射頻前端的小型化是無線通信技術(shù)發(fā)展的趨勢(shì)之一,在傳統(tǒng)的射頻電路中,各種無源射頻器件都是分別設(shè)計(jì),然后以級(jí)聯(lián)的形式連接在一起,這種設(shè)計(jì)方式不利于射頻前端的小型化,因此,作為一種小型化和降低成本的有效方式,無源射頻元件的一體化設(shè)計(jì)被越來越廣泛的重視。功分器是射頻前端饋電網(wǎng)絡(luò)中的重要無源器件,本文針對(duì)多功能功分器的一體化設(shè)計(jì)開展研究,具有一定的理論意義和重要的應(yīng)用價(jià)值。首先,本文從功分器的理論出發(fā),結(jié)合混合模S參數(shù)的分析,提出了一種能夠?qū)崿F(xiàn)單端到差分轉(zhuǎn)化的差分型功分器,實(shí)現(xiàn)了功率分配器與巴倫的一體化設(shè)計(jì)；其次,結(jié)合濾波器的設(shè)計(jì)理論,引入級(jí)聯(lián)的階梯耦合線結(jié)構(gòu),設(shè)計(jì)出具有濾波特性的功分器,實(shí)現(xiàn)了功分器和濾波器的一體化設(shè)計(jì)；最后,結(jié)合前兩部分內(nèi)容,將濾波功分器差分化,設(shè)計(jì)出具有濾波特性的差分功分器,進(jìn)一步實(shí)現(xiàn)了功分器、濾波器以及巴倫三種元件的一體化設(shè)計(jì)。主要研究內(nèi)容和創(chuàng)新如下：1、分析介紹了混合模式條件下的散射參量,得出了全差分端口和混合端口兩種網(wǎng)絡(luò)下,單端的傳統(tǒng)網(wǎng)絡(luò)S參量與混合模S參量之間的變換形式。2、以Wilkinson結(jié)構(gòu)的功分器為基礎(chǔ),將混合模S參數(shù)分析方法和奇偶模分析方法相結(jié)合,通過采用枝節(jié)線加載階梯阻抗線的結(jié)構(gòu)來擴(kuò)展帶寬,設(shè)計(jì)和制作了一款工作于X波段(9-11GHz)的新型單端-差分功分器。測(cè)試的性能曲線與仿真的性能曲線基本吻合,在差模激勵(lì)下,帶內(nèi)的插入損耗優(yōu)于-4.6dB,輸入端口處的回波損耗都在-15dB以下,輸出端口處的回波損耗在-12dB以下,兩個(gè)輸出端之間的隔離性能都達(dá)到了-15dB以下,同時(shí),還實(shí)現(xiàn)了良好的共模抑制。3、將等效電路方法和電磁仿真方法相結(jié)合,通過采用階梯阻抗線和枝節(jié)線加載諧振器結(jié)構(gòu),設(shè)計(jì)和制作了一款工作于X波段(9.5-10.5GHz)的新型濾波型的功分器,其中,為了使電路緊湊、增加帶內(nèi)選擇性、提高帶外抑制能力,采用階梯阻抗線為耦合線。測(cè)試的性能曲線和仿真的性能曲線基本一致,插入損耗優(yōu)于-3.8dB,輸入端口處回波損耗在-17dB以下,輸出端口處回波損耗都處于-20dB以下,輸出端處隔離度性能最大能夠達(dá)到-16dB以下,實(shí)現(xiàn)了良好的濾波和功分特性。4、結(jié)合前兩部分內(nèi)容,將差分功分器的理論應(yīng)用于濾波功分器中,設(shè)計(jì)和制作了一款X波段(9.5-10.5GHz)集功分器、濾波器和巴倫三種器件為一體的新型差分濾波功分器。為驗(yàn)證電路的性能,對(duì)電路進(jìn)行了加工并測(cè)試,從測(cè)試結(jié)果中可以看出共模信號(hào)被抑制,差模激勵(lì)下的輸入端和輸出端回波損耗均處在-13dB以下,帶內(nèi)的插入損耗優(yōu)于-4dB,帶內(nèi)輸出端的差模隔離性能在-20dB以下,與仿真曲線基本吻合。
[Abstract]:The miniaturization of RF front-end is one of the developing trends of wireless communication technology. In the traditional RF circuits, all kinds of passive RF devices are designed separately and connected together in cascaded form. This design method is not conducive to the miniaturization of RF front-end. Therefore, as an effective way of miniaturization and cost reduction, the integrated design of passive RF components has been paid more and more attention. Power divider is an important passive device in RF front-end feed network. In this paper, the integrated design of multi-function power divider is studied, which has certain theoretical significance and important application value. Firstly, based on the theory of power divider and the analysis of S parameter of mixed mode, a differential power divider is proposed, which can realize the conversion from single end to difference, and the integrated design of power divider and Barron is realized. Combined with the design theory of the filter, the cascade ladder coupling line structure is introduced to design the power divider with filtering characteristics, which realizes the integrated design of the power divider and the filter. Finally, combining the first two parts, the difference of the filter power divider is differentiated. A differential power divider with filter characteristics is designed, and the integrated design of power divider, filter and Barron is realized. The main research contents and innovations are as follows: 1. The scattering parameters under mixed mode are analyzed and introduced, and two kinds of networks, full differential port and mixed port, are obtained. On the basis of the power divider of Wilkinson structure, the transformation form between the traditional S parameter and the mixed mode S parameter of a single terminal network is combined with the parity mode analysis method and the mixed mode S parameter analysis method. A new single-terminal differential power divider working in X-band (9-11GHz) is designed and fabricated by using the structure of stepped impedance line loaded with branch line to expand the bandwidth. The measured performance curve is in good agreement with the simulated performance curve. Under differential mode excitation, the insertion loss in the band is better than -4.6 dB, the echo loss at the input port is below -15 dB, and the echo loss at the output port is below -12 dB. The isolation performance between the two output terminals is below -15dB. At the same time, a good common mode suppression of .3is realized. The equivalent circuit method is combined with the electromagnetic simulation method, and the resonator structure is loaded with step impedance line and branch line. A novel filter power divider working in X-band (9.5-10.5GHz) is designed and fabricated. In order to make the circuit compact, increase the in-band selectivity and improve the out-of-band suppression ability, the stepped impedance line is used as the coupling line. The measured performance curve is basically consistent with the simulated performance curve. The insertion loss is better than -3.8 dB, the echo loss at the input port is below -17dB, the echo loss at the output port is below -20dB, and the maximum isolation performance at the output terminal is below -16dB. A good filter and power divider is realized. Combined with the first two parts, the differential power divider is applied to the filter power divider, and an X-band (9.5-10.5GHz) power divider is designed and fabricated. A new type of differential filter splitter, which combines the filter and three kinds of Barron devices, is a new type of differential filter power divider. In order to verify the performance of the circuit, the circuit is machined and tested. It can be seen from the test results that the common mode signal is suppressed, and the echo loss of the input and output terminals under differential mode excitation is below -13dB. The in-band insertion loss is better than that of -4dB.The differential mode isolation performance of the in-band output is less than -20dB, which is in good agreement with the simulation curve.
【學(xué)位授予單位】：中國科學(xué)技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TN626
本文編號(hào)：2201154
[Abstract]:The miniaturization of RF front-end is one of the developing trends of wireless communication technology. In the traditional RF circuits, all kinds of passive RF devices are designed separately and connected together in cascaded form. This design method is not conducive to the miniaturization of RF front-end. Therefore, as an effective way of miniaturization and cost reduction, the integrated design of passive RF components has been paid more and more attention. Power divider is an important passive device in RF front-end feed network. In this paper, the integrated design of multi-function power divider is studied, which has certain theoretical significance and important application value. Firstly, based on the theory of power divider and the analysis of S parameter of mixed mode, a differential power divider is proposed, which can realize the conversion from single end to difference, and the integrated design of power divider and Barron is realized. Combined with the design theory of the filter, the cascade ladder coupling line structure is introduced to design the power divider with filtering characteristics, which realizes the integrated design of the power divider and the filter. Finally, combining the first two parts, the difference of the filter power divider is differentiated. A differential power divider with filter characteristics is designed, and the integrated design of power divider, filter and Barron is realized. The main research contents and innovations are as follows: 1. The scattering parameters under mixed mode are analyzed and introduced, and two kinds of networks, full differential port and mixed port, are obtained. On the basis of the power divider of Wilkinson structure, the transformation form between the traditional S parameter and the mixed mode S parameter of a single terminal network is combined with the parity mode analysis method and the mixed mode S parameter analysis method. A new single-terminal differential power divider working in X-band (9-11GHz) is designed and fabricated by using the structure of stepped impedance line loaded with branch line to expand the bandwidth. The measured performance curve is in good agreement with the simulated performance curve. Under differential mode excitation, the insertion loss in the band is better than -4.6 dB, the echo loss at the input port is below -15 dB, and the echo loss at the output port is below -12 dB. The isolation performance between the two output terminals is below -15dB. At the same time, a good common mode suppression of .3is realized. The equivalent circuit method is combined with the electromagnetic simulation method, and the resonator structure is loaded with step impedance line and branch line. A novel filter power divider working in X-band (9.5-10.5GHz) is designed and fabricated. In order to make the circuit compact, increase the in-band selectivity and improve the out-of-band suppression ability, the stepped impedance line is used as the coupling line. The measured performance curve is basically consistent with the simulated performance curve. The insertion loss is better than -3.8 dB, the echo loss at the input port is below -17dB, the echo loss at the output port is below -20dB, and the maximum isolation performance at the output terminal is below -16dB. A good filter and power divider is realized. Combined with the first two parts, the differential power divider is applied to the filter power divider, and an X-band (9.5-10.5GHz) power divider is designed and fabricated. A new type of differential filter splitter, which combines the filter and three kinds of Barron devices, is a new type of differential filter power divider. In order to verify the performance of the circuit, the circuit is machined and tested. It can be seen from the test results that the common mode signal is suppressed, and the echo loss of the input and output terminals under differential mode excitation is below -13dB. The in-band insertion loss is better than that of -4dB.The differential mode isolation performance of the in-band output is less than -20dB, which is in good agreement with the simulation curve.
【學(xué)位授予單位】：中國科學(xué)技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TN626
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