《電子技術(shù)應(yīng)用》
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軟件無(wú)線電架構(gòu)的導(dǎo)航接收機(jī)模擬前端設(shè)計(jì)
2022年電子技術(shù)應(yīng)用第8期
孫金中,付秀蘭,高艷麗
安徽芯紀(jì)元科技有限公司,安徽 合肥230031
摘要: 針對(duì)基于超外差或低中頻的傳統(tǒng)導(dǎo)航接收機(jī)模擬前端電路功能復(fù)雜、功耗高、不利于單片集成等問(wèn)題,基于模擬最小化,數(shù)字最大化的思想,通過(guò)芯片內(nèi)部集成高增益射頻放大器、低功耗的高速模數(shù)轉(zhuǎn)換器、低抖動(dòng)的時(shí)鐘鎖相環(huán),創(chuàng)新性地設(shè)計(jì)并實(shí)現(xiàn)了一款基于軟件無(wú)線電架構(gòu)的接收機(jī)模擬前端電路。通過(guò)55 nm CMOS 工藝電路設(shè)計(jì)、版圖設(shè)計(jì)、仿真及硅流片驗(yàn)證,測(cè)試結(jié)果表明該接收機(jī)前端電路各模塊功能正常,實(shí)現(xiàn)了單個(gè)模擬接收通道處理多模導(dǎo)航信號(hào),極大地降低了模擬電路的規(guī)模及功耗并成功應(yīng)用于一款多模導(dǎo)航SoC芯片中。
中國(guó)分類號(hào): TN851
文獻(xiàn)標(biāo)識(shí)碼: A
DOI:10.16157/j.issn.0258-7998.222671
中文引用格式: 孫金中,付秀蘭,高艷麗. 軟件無(wú)線電架構(gòu)的導(dǎo)航接收機(jī)模擬前端設(shè)計(jì)[J].電子技術(shù)應(yīng)用,2022,48(8):131-134,139.
英文引用格式: Sun Jinzhong,F(xiàn)u Xiulan,Gao Yanli. Design of an analog front-end of navigation receiver based on software defined radio[J]. Application of Electronic Technique,2022,48(8):131-134,139.
Design of an analog front-end of navigation receiver based on software defined radio
Sun Jinzhong,F(xiàn)u Xiulan,Gao Yanli
Anhui Siliepoch Technology Co.,Ltd.,Hefei 230031,China
Abstract: The analog front-end of traditional navigation receiver based on superheterodyne or low IF is complex in function, high in power consumption and not conductive to monolithic integration. Based on the idea of analog minimization and digital maximization, a novel analog front-end of navigation receiver based on software radio architecture is designed and implemented by integrating a high gain RF amplifier, a high speed low power ADC and a low jitter clock phase-locked loop. Through 55 nm CMOS process circuit design, layout design, simulation and silicon wafer verification, the test results show that the analog front-end of navigation receiver works normally and only one analog receiver channel is able to process the multimode navigation signals which greatly reduces the size and power consumption of analog circuit. The analog front-end circuit has successfully applied in a multimode navigation SoC chip.
Key words : software defined radio;receiver;amplifier;ADC;PLL

0 引言

    隨著信息技術(shù)的飛速發(fā)展,無(wú)線接收機(jī)的實(shí)現(xiàn)形式也發(fā)生了巨大變化,原來(lái)的超外差、低中頻、零中頻架構(gòu)的無(wú)線接收機(jī)已經(jīng)不能滿足現(xiàn)代通信、雷達(dá)、電子對(duì)抗等多頻段、多模式及多功能的電子裝備的需求,軟件無(wú)線電架構(gòu)的接收機(jī)因其自身的結(jié)構(gòu)特點(diǎn),是未來(lái)無(wú)線通信、多模導(dǎo)航、多功能一體機(jī)的理想選擇[1-4]。

    軟件無(wú)線電架構(gòu)的接收機(jī)的設(shè)計(jì)難點(diǎn)是設(shè)計(jì)高性能的接收機(jī)模擬前端電路。隨著集成電路技術(shù)的飛速發(fā)展,模數(shù)轉(zhuǎn)換器的轉(zhuǎn)換速度越來(lái)越高,使得設(shè)計(jì)單片軟件無(wú)線電架構(gòu)的接收機(jī)成為了可能[5-6]。

    本文設(shè)計(jì)了一款軟件無(wú)線電架構(gòu)的接收機(jī)模擬前端用于多模衛(wèi)星導(dǎo)航系統(tǒng)的射頻信號(hào)接收及轉(zhuǎn)換,從而實(shí)現(xiàn)單片軟件無(wú)線電架構(gòu)的導(dǎo)航SoC芯片。該模擬前端通過(guò)低功耗高速模數(shù)轉(zhuǎn)換器直接對(duì)導(dǎo)航信號(hào)進(jìn)行射頻采樣量化轉(zhuǎn)換,在數(shù)字域完成頻率變換及信號(hào)處理,數(shù)字電路隨著集成電路工藝的進(jìn)步面積和功耗可以不斷降低,由于內(nèi)部集成了寬帶的射頻放大器和高速ADC可以對(duì)不同模式的導(dǎo)航信號(hào)全部進(jìn)行采樣量化轉(zhuǎn)換,實(shí)現(xiàn)了單個(gè)模擬通道完成多模導(dǎo)航信號(hào)的處理,從而實(shí)現(xiàn)系統(tǒng)終端的最優(yōu)化設(shè)計(jì)[7-9]。




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作者信息:

孫金中,付秀蘭,高艷麗

(安徽芯紀(jì)元科技有限公司,安徽 合肥230031)




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