本文關(guān)鍵詞：可重構(gòu)多功能濾波器及其自動調(diào)諧電路的研究與設(shè)計　出處：《武漢大學》2014年博士論文　論文類型：學位論文

  更多相關(guān)文章： 模擬濾波器 復數(shù)濾波器 射頻前端 多模多頻 自動調(diào)諧電路

【摘要】：近年來,隨著微電子產(chǎn)業(yè)的快速發(fā)展,射頻無線接收機技術(shù)飛速前進,讓同一個無線設(shè)備兼具多種功能,已成為微電子學和無線通信領(lǐng)域最具有革新性和前沿性的技術(shù)之一�；诨パa金屬氧化物半導體(Complementary Metal-Oxide-Semiconductor Transistor:CMOS)工藝的多模多頻接收系統(tǒng)在性價比上大大超過單一系統(tǒng)的接收機,在無線通信領(lǐng)域中受到了廣泛的關(guān)注。濾波器作為射頻接收系統(tǒng)的關(guān)鍵模塊之一,其結(jié)構(gòu)和設(shè)計直接影響著整個通信系統(tǒng)的性能。在多模多頻接收系統(tǒng)中,濾波器必須能夠滿足不同模式和多個頻段的指標要求,這就要求其功能可配置,結(jié)構(gòu)可重構(gòu),頻率可調(diào)諧,且性能穩(wěn)定。 本文在系統(tǒng)綜述國內(nèi)外濾波器設(shè)計技術(shù)的基礎(chǔ)上,分析了高性能,可重構(gòu)模擬濾波器的設(shè)計方法。并提出了幾種采用不同有源器件實現(xiàn)的高性能,可重構(gòu)模擬濾波器。此外,深入研究了工藝因素、環(huán)境變化及器件老化、工作條件等對濾波器特性的影響,并提出了一種高精度,低失真的片上頻率自適應(yīng)系統(tǒng)。具體研究內(nèi)容如下： 首先,本文介紹了濾波器的基本原理和分類,分析了不同類型濾波器的特點以及自動調(diào)諧電路的作用和設(shè)計規(guī)則。 其次,提出了一種基于高線性可調(diào)跨導運算放大器(Operational Transimpedance Amplifier:OTA)的多模多頻濾波器。該濾波器通過改變OTA的跨導來切換不同的工作頻率,而且同一個拓撲結(jié)構(gòu)能夠?qū)崿F(xiàn)不同階次的低通,帶通以及復數(shù)濾波等功能,這些不同的功能通過控制三組開關(guān)的的通斷來實現(xiàn),并給出了電路仿真結(jié)果以驗證所提出的方案可行。 再次,設(shè)計了一種基于差動電壓式電流傳輸器(Differential Voltage Current Conveyors:DVCC)的高階電流模式多功能濾波電路。此電路功能多樣,結(jié)構(gòu)簡單,通用性強,易于集成。更重要的是所采用的設(shè)計方法簡單明了,可移植性強。并且針對DVCC不具備電調(diào)諧的缺點,提出了一種具有數(shù)字可編程控制的DVCC: DPDVCC(Digitally programmable DVCC:DPDVCC).并將其應(yīng)用到高階電壓模式多功能濾波器設(shè)計中,該濾波器不僅具有和基于DVCC的濾波器類似的優(yōu)點,而且能夠獨立調(diào)節(jié)其關(guān)鍵的技術(shù)參數(shù)。 然后設(shè)計了一種基于電流傳輸跨導放大器(current conveyor trans-conductance amplifier:CCTA)的電流模式高階多功能濾波器,該濾波器能夠同時實現(xiàn)低通,帶通,高通和帶阻等功能,其品質(zhì)因素和工作頻率都可以通過調(diào)節(jié)偏置電流來實現(xiàn)電調(diào)諧。此高階濾波器器件數(shù)目少,結(jié)構(gòu)簡單,非常適合制作全集成IC。 最后,本文重點研究了工藝因素(如制造容差、工藝變化、溫度漂移等),環(huán)境變化(如溫度、電源電壓)及器件老化、工作條件等因素,對芯片中所集成的電阻及電容值的影響,以及由此帶來的濾波器關(guān)鍵性能的改變,歸納了片上自動調(diào)諧電路的設(shè)計規(guī)則以及方法,最后設(shè)計了一種高性能的片上自動調(diào)諧系統(tǒng),并且用這個電路來調(diào)節(jié)一種全差分有源帶通濾波器。將其成功應(yīng)用到GPS/北斗雙模雙頻的射頻前端電路中,采用TSMC0.18//m的工藝流片,調(diào)節(jié)電路和濾波器電路兩者共占芯片面積約為623.40x870.8μm2,在1.8V的電源電壓下,消耗的電流約為5.2mA。測試結(jié)果能夠滿足接收機的系統(tǒng)指標要求。
[Abstract]:In recent years, with the rapid development of the microelectronics industry, the rapid progress of the wireless RF receiver technology, with a wireless device with multiple functions, has become one of the most innovative and advanced microelectronics and wireless communication technology. The complementary metal oxide semiconductor (Complementary Metal-Oxide-Semiconductor Transistor:CMOS) receiver based on technology of multi-mode multi frequency receiver system greatly more than a single system in cost, has received much attention in the field of wireless communication. One of the key modules of filter as the RF receiving system, its structure and design directly affects the performance of the whole communication system. In multimode multi frequency receiving system, filter must be able to meet the requirements of different mode and multiple frequency index this requires the function configuration, reconfiguration, frequency tunable, and stable performance.
Based on the systematic review of filter design technology, high performance analysis, reconfigurable analog filter design method is proposed. The high performance of several different active devices to achieve, reconfigurable analog filter. In addition, in-depth study of the process factors, changes in the environment and device aging, influence of working conditions on the filter the characteristics, and put forward a kind of high precision, low distortion frequency adaptive system on a chip. The specific contents are as follows:
First of all, this paper introduces the basic principle and classification of the filter, analyzes the characteristics of different types of filters, and the function and design rules of the automatic tuning circuit.
Secondly, based on the high linear adjustable transconductance amplifier (Operational Transimpedance Amplifier:OTA) multi-mode multi frequency filter. The filter by changing the OTA transconductance frequency to switch to a different, but the same topology can achieve different order low pass, band-pass and complex filtering and other functions, these different the function of three groups by controlling the on-off of the switch to achieve, and gives the circuit simulation results are presented to validate the proposed scheme is feasible.
Thirdly, design a differential voltage current conveyor (Differential Voltage Current Conveyors:DVCC) based on the high order current mode multifunctional filter circuit. The circuit of various functions, simple structure, strong versatility, easy to be integrated. It is more important to design the method simple, strong portability. And according to DVCC do not have electric tuning shortcomings, proposes a digital programmable control DVCC: DPDVCC (Digitally programmable DVCC:DPDVCC). And its application to high order voltage mode multifunction filter, the filter and the filter based on DVCC not only has the similar advantages, and can be independently adjusted to the key technical parameters.
Then design a transconductance amplifier current transmission (current conveyor trans-conductance amplifier:CCTA) based on the current mode high order multifunction filter, the filter can realize lowpass, bandpass, highpass and bandstop functions, the quality factor and the work frequency can be realized by adjusting the bias current to the high number of electric tuning. Order filter device, simple structure, very suitable for the production of fully integrated IC.
Finally, this paper focuses on the process factors (such as manufacturing tolerances, process variations, temperature drift etc.), environmental changes (such as temperature, power supply voltage) and aging device, working conditions and other factors, influence on the chip capacitor and resistor values, and change the key performance of the resulting filter, summed up the on-chip automatic tuning circuit design rules and methods, finally designed a high performance on-chip automatic tuning system, and use this circuit to adjust a fully differential active band-pass filter. The RF front-end circuit of its successful application to GPS/ Bei Dou dual-mode dual band in the process of TSMC0.18//m, regulation both circuit and filter circuit of total chip area is about 623.40x870.8 m2, in the power supply voltage of 1.8V, current consumption is about 5.2mA. test results can satisfy the system requirements of the receiver.

【學位授予單位】：武漢大學
【學位級別】：博士
【學位授予年份】：2014
【分類號】：TN713;TN851

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8 劉s，

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