本文選題：接收混頻器 + 寬帶接收機(jī)��； 參考：《浙江大學(xué)》2017年碩士論文

【摘要】：接收混頻器作為接收通道中的核心模塊,在實(shí)現(xiàn)寬帶多模射頻芯片的設(shè)計(jì)中具有重要作用。高性能的寬帶混頻器設(shè)計(jì)不僅有利于改善接收通道的整體性能,還可以極大提高支持多模、多頻寬帶應(yīng)用的無(wú)線系統(tǒng)的靈活性。為了使現(xiàn)代寬帶接收機(jī)的射頻前端能夠提供更高的線性度以及更寬的動(dòng)態(tài)范圍,本文研究設(shè)計(jì)了一種適用于0.4～2.7 GHz頻率范圍的寬帶可變?cè)鲆娼邮栈祛l器。論文通過(guò)對(duì)比各種基本類(lèi)型的混頻器,設(shè)計(jì)和優(yōu)化了適合寬帶應(yīng)用的接收混頻器架構(gòu)。在電流型無(wú)源混頻器性能分析的基礎(chǔ)上,通過(guò)增加多檔增益切換功能以提高混頻器的輸入動(dòng)態(tài)范圍,并在寬帶應(yīng)用中增加諧波抑制功能以減小諧波信號(hào)的干擾。此外,文中采用兩級(jí)諧波抑制結(jié)構(gòu)改善混頻器的諧波抑制效果,并提出新的電路設(shè)計(jì)方案以實(shí)現(xiàn)八相位本振信號(hào)。最終完成的寬帶可變?cè)鲆娼邮栈祛l器具有諧波抑制工作模式和普通工作模式,并經(jīng)過(guò)后續(xù)的優(yōu)化設(shè)計(jì)有效縮減該雙�；祛l器的芯片面積。本文選用TSMC 65nm RF CMOS工藝進(jìn)行寬帶可變?cè)鲆娼邮栈祛l器的電路設(shè)計(jì)和版圖實(shí)現(xiàn),并對(duì)完成的設(shè)計(jì)進(jìn)行仿真分析。仿真結(jié)果表明,本文設(shè)計(jì)的寬帶可變?cè)鲆娼邮栈祛l器能夠?qū)崿F(xiàn)1～30 dB增益范圍可調(diào),增益步進(jìn)為1 dB,最高增益工作條件下,噪聲系數(shù)優(yōu)于6.5 dB且輸入IIP3優(yōu)于2 dBm,寬帶應(yīng)用中三次和五次諧波的抑制水平分別優(yōu)于55 dB和59 dB。
[Abstract]:As the core module of the receiving channel, the receiver mixer plays an important role in the design of broadband multimode RF chip. The design of high performance broadband mixer not only improves the overall performance of the receiving channel, but also greatly improves the flexibility of wireless systems supporting multi-mode and multi-frequency broadband applications. In order to make the RF front-end of modern wideband receiver provide higher linearity and wider dynamic range, a wideband variable gain receiver mixer suitable for 0.4 GHz frequency range is designed in this paper. By comparing various basic types of mixers, this paper designs and optimizes the architecture of reception mixers suitable for broadband applications. Based on the analysis of the performance of the current-mode passive mixer, the input dynamic range of the mixer is improved by adding the multi-stage gain switching function, and the harmonic suppression function is added in the wideband application to reduce the interference of the harmonic signal. In addition, the two-order harmonic suppression structure is used to improve the harmonic suppression effect of the mixer, and a new circuit design scheme is proposed to realize the 8-phase local oscillator signal. The final wideband variable gain receiving mixer has harmonic suppression mode and common mode of operation, and the chip area of the dual-mode mixer is effectively reduced by subsequent optimization design. In this paper, TSMC 65nm RF CMOS process is used for the circuit design and layout realization of wideband variable gain receiver mixer, and the simulation analysis of the completed design is carried out. The simulation results show that the wideband variable gain receiver mixer designed in this paper can achieve the gain range of 1Hz 30 dB, the gain step is 1 dB, and the maximum gain working condition is obtained. The noise coefficient is better than 6.5 dB and the input IIP3 is better than 2 dBm.The third and fifth harmonic suppression levels in broadband applications are better than 55 dB and 59 dB, respectively.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TN773

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本文編號(hào)：1918059