6-10 GHz單片集成正交混頻器的研究
發(fā)布時(shí)間：2019-04-04 13:03
【摘要】：隨著微波電路和半導(dǎo)體工藝的不斷發(fā)展,小型化和高度集成化已經(jīng)成為了現(xiàn)代通信系統(tǒng)的發(fā)展趨勢。單片微波集成電路由于具有小體積、量產(chǎn)成本低及高穩(wěn)定性等特點(diǎn)而成為了研究熱點(diǎn),在軍用領(lǐng)域和民用領(lǐng)域的應(yīng)用越來越廣泛�；祛l器作為MMIC研究中主要的部件,具有重要的研究意義。有效的抑制鏡像信號(hào)一直是單邊帶無線電系統(tǒng)的一個(gè)研究重點(diǎn),作為鏡像抑制混頻器的一種,正交混頻器能十分有效的抑制鏡像信號(hào),其性能好壞對(duì)通信系統(tǒng)的影響非常大。利用集總正交耦合器代替?zhèn)鹘y(tǒng)的Lange電橋,使得芯片的面積大大減小。通過對(duì)集總正交耦合器工作原理的分析,采用奇偶模激勵(lì)法深入的分析了其單級(jí)結(jié)構(gòu),在此基礎(chǔ)之上進(jìn)行級(jí)聯(lián),得到了適用的兩級(jí)結(jié)構(gòu),基于此設(shè)計(jì)出的正交耦合器具有良好的幅度和相位平衡度,使得正交混頻器的鏡像抑制能力得到了大幅度提升�；祛l單元采用雙平衡結(jié)構(gòu),提高了電路的隔離度以及增加了帶寬。在巴倫的設(shè)計(jì)中,采用螺旋巴倫代替?zhèn)鹘y(tǒng)的Marchand巴倫。針對(duì)雙平衡混頻器難以實(shí)現(xiàn)輸入端口寬帶匹配的缺點(diǎn),在巴倫的兩個(gè)初級(jí)線圈增加一個(gè)并聯(lián)電容及一個(gè)串聯(lián)到地的電容,構(gòu)成了一個(gè)T型網(wǎng)絡(luò)。采用該種結(jié)構(gòu)的巴倫能夠代替LC匹配電路,并且實(shí)現(xiàn)寬帶匹配。采用WIN 0.15mm Ga As p HEMT工藝設(shè)計(jì)了一款6-10 GHz正交混頻器芯片,芯片面積為1.5×1.15mm~2。測試結(jié)果表明,在6-10 GHz寬頻帶內(nèi)混頻器的變頻損耗典型值為7 dB,鏡像抑制度典型值為30 dB,本振端口到射頻端口的隔離度典型值為36 dB,本振端口到中頻端口的隔離度典型值為20 dB,射頻端口到中頻端口的隔離度典型值為38 dB,中頻帶寬為DC-3.5 GHz,P1dB大于13dBm。
[Abstract]:With the development of microwave circuit and semiconductor technology, miniaturization and high integration have become the development trend of modern communication system. Because of its small size, low cost of mass production and high stability, monolithic microwave integrated circuit (monolithic microwave integrated circuit) has become a research hotspot, and has been widely used in military and civil fields. As the main component of MMIC research, mixer has important research significance. The effective suppression of mirror signal is always a research focus of SSB radio system. As a kind of mirror image suppression mixer, the orthogonal mixer can suppress the mirror signal very effectively. The performance of the quadrature mixer has a great influence on the communication system. Using lumped orthogonal couplers to replace the traditional Lange bridge, the area of the chip is greatly reduced. Based on the analysis of the working principle of lumped orthogonal couplers, the single-stage structure is deeply analyzed by using the odd-even mode excitation method. On this basis, the suitable two-stage structure is obtained by cascading on the basis of the analysis of the working principle of the lumped orthogonal couplers. Based on this design, the orthogonal coupler has good amplitude and phase balance, which greatly improves the image rejection ability of the quadrature mixer. The mixing unit adopts a double balanced structure, which improves the isolation and bandwidth of the circuit. In Baron's design, spiral Baron is used to replace the traditional Marchand Baron. In view of the disadvantage that the double balanced mixer is difficult to realize the broadband matching of input ports, a T-type network is formed by adding a parallel capacitor and a series-to-ground capacitance to two primary coils in Baron. Barron with this structure can replace LC matching circuit and realize wide band matching. A 6 脳 10 GHz quadrature mixer chip with a chip area of 1.5 脳 1.15mm 路m ~ 2 was designed by WIN 0.15mm Ga As p HEMT process. The test results show that the typical value of the frequency conversion loss in the 6-10 GHz broadband mixer is 7 dB, mirror suppression system. The typical isolation value from 30 dB, local oscillator port to radio frequency port is 36 dB,. The isolation from the local port to the intermediate frequency port is typical of 20 dB, RF port to intermediate frequency port. The typical isolation value is 38 dB, if bandwidth is greater than 13 dBm.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN773
本文編號(hào)：2453842
[Abstract]:With the development of microwave circuit and semiconductor technology, miniaturization and high integration have become the development trend of modern communication system. Because of its small size, low cost of mass production and high stability, monolithic microwave integrated circuit (monolithic microwave integrated circuit) has become a research hotspot, and has been widely used in military and civil fields. As the main component of MMIC research, mixer has important research significance. The effective suppression of mirror signal is always a research focus of SSB radio system. As a kind of mirror image suppression mixer, the orthogonal mixer can suppress the mirror signal very effectively. The performance of the quadrature mixer has a great influence on the communication system. Using lumped orthogonal couplers to replace the traditional Lange bridge, the area of the chip is greatly reduced. Based on the analysis of the working principle of lumped orthogonal couplers, the single-stage structure is deeply analyzed by using the odd-even mode excitation method. On this basis, the suitable two-stage structure is obtained by cascading on the basis of the analysis of the working principle of the lumped orthogonal couplers. Based on this design, the orthogonal coupler has good amplitude and phase balance, which greatly improves the image rejection ability of the quadrature mixer. The mixing unit adopts a double balanced structure, which improves the isolation and bandwidth of the circuit. In Baron's design, spiral Baron is used to replace the traditional Marchand Baron. In view of the disadvantage that the double balanced mixer is difficult to realize the broadband matching of input ports, a T-type network is formed by adding a parallel capacitor and a series-to-ground capacitance to two primary coils in Baron. Barron with this structure can replace LC matching circuit and realize wide band matching. A 6 脳 10 GHz quadrature mixer chip with a chip area of 1.5 脳 1.15mm 路m ~ 2 was designed by WIN 0.15mm Ga As p HEMT process. The test results show that the typical value of the frequency conversion loss in the 6-10 GHz broadband mixer is 7 dB, mirror suppression system. The typical isolation value from 30 dB, local oscillator port to radio frequency port is 36 dB,. The isolation from the local port to the intermediate frequency port is typical of 20 dB, RF port to intermediate frequency port. The typical isolation value is 38 dB, if bandwidth is greater than 13 dBm.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN773
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