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一种宽调节范围高线性度压控振荡电路的设计 被引量:6
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作者 朱章华 来新泉 张艳维 《电子器件》 CAS 2007年第6期2073-2076,共4页
介绍了一种基于0.8μm CMOS工艺的宽调节范围高线性度压控锯齿波振荡电路,同时利用Candence仿真工具对电路进行了仿真模拟.结果表明,产生的锯齿波压控调节范围为1.1~1.9MHz,中间频段线型度很高,且频率稳定、精度较高,可广泛应用在稳压... 介绍了一种基于0.8μm CMOS工艺的宽调节范围高线性度压控锯齿波振荡电路,同时利用Candence仿真工具对电路进行了仿真模拟.结果表明,产生的锯齿波压控调节范围为1.1~1.9MHz,中间频段线型度很高,且频率稳定、精度较高,可广泛应用在稳压器以及各种相位频率锁定系统中. 展开更多
关键词 压控振荡电路 调节范围 线性度 CMOS
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基于Multisim 8的压控振荡电路仿真分析 被引量:2
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作者 叶建波 《山西电子技术》 2005年第4期25-26,共2页
介绍了Multisim8的仿真功能的特点,并通过实例说明了用Multisim8进行仿真分析的具体方法,简单介绍了如何设置参数和进行仿真操作。
关键词 MULTISIM 仿真分析 压控振荡电路
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Q值可变压控振荡电路
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作者 路凯 《电子与仪表》 1996年第2期46-46,共1页
关键词 Q值 振荡电路 压控振荡电路
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一种多功能压控振荡电路
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作者 马秀英 刘德媛 《电子技术(上海)》 北大核心 1990年第2期22-23,共2页
跨导运算放大器(operational transconductance amplifier,简称OTA),常用图1的符号表示。OTA除具有常规运算放大器的同相、反相输入端外,还多了一个电信号控制端,即偏置电流输入端。将经过编程的数字或模拟信号加到这个控制端,就可以实... 跨导运算放大器(operational transconductance amplifier,简称OTA),常用图1的符号表示。OTA除具有常规运算放大器的同相、反相输入端外,还多了一个电信号控制端,即偏置电流输入端。将经过编程的数字或模拟信号加到这个控制端,就可以实现增益g_m的编程,因此,OTA也称为可编程运算放大器。 展开更多
关键词 运算放大器 压控振荡电路 振荡电路
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2003年全国大学生电子设计竞赛一等奖 电压控制LC振荡器(A题) 被引量:1
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作者 潘晨聪 刘倩如 +1 位作者 韩耕 罗伟雄 《电子世界》 2004年第2期42-45,共4页
关键词 LC振荡 正弦压控振荡电路 VCO 稳幅 选频网络
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快速扫频式移动电话干扰装置的研制
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作者 杨帆 钱志鸿 《仪器仪表用户》 2004年第3期24-26,共3页
本文介绍了一种快速扫频式移动电话干扰装置的研制方案、该装置采用快速扫频技术,对移动通信的基站与移动电话之间的下行信道进行有效的干扰.使指定范围内的移动通信切断.文中详细说明了本装置中的扫频电压发生电路、压控振荡电路以及... 本文介绍了一种快速扫频式移动电话干扰装置的研制方案、该装置采用快速扫频技术,对移动通信的基站与移动电话之间的下行信道进行有效的干扰.使指定范围内的移动通信切断.文中详细说明了本装置中的扫频电压发生电路、压控振荡电路以及高频功放电路.定向天线等部分的实现原理及电路设计,并进行了实验结果分析。实测表明:该装置具有优良的性能和较1高的性价比. 展开更多
关键词 快速扫频 移动电话 干扰装置 下行信道 移动通信 扫频电发生电路 压控振荡电路 高频功放电路 定向天线
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Low phase noise LC VCO design in CMOS technology 被引量:2
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作者 李智群 王志功 +1 位作者 张立国 徐勇 《Journal of Southeast University(English Edition)》 EI CAS 2004年第1期6-9,共4页
This paper presents the design and the experimental measurements of two complementary metal-oxide-semiconductor (CMOS) LC-tuned voltage controlled oscillators (VCO) implemented in a 0.18 μm 6-metal-layer mixed-signal... This paper presents the design and the experimental measurements of two complementary metal-oxide-semiconductor (CMOS) LC-tuned voltage controlled oscillators (VCO) implemented in a 0.18 μm 6-metal-layer mixed-signal/RF CMOS technology. The design methodologies and approaches for the optimization of the ICs are presented. The first design is optimized for mixed-signal transistor, oscillated at 2.64 GHz with a phase noise of -93.5 dBc/Hz at 500 kHz offset. The second one optimized for RF transistor, using the same architecture, oscillated at 2.61 GHz with a phase noise of -95.8 dBc/Hz at 500 kHz offset. Under a 2 V supply, the power dissipation is 8 mW, and the maximum buffered output power for mixed-signal and RF transistor are -7 dBm and -5.4 dBm, respectively. Both kinds of oscillators make use of on-chip components only, allowing for simple and robust integration. 展开更多
关键词 CMOS integrated circuits Integrated circuit layout TRANSISTORS
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A Monolithic InGaP/GaAs HBT VCO for 5GHz Wireless Applications 被引量:1
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作者 陈立强 张健 +2 位作者 李志强 陈普锋 张海英 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2007年第6期823-828,共6页
A monolithic voltage controlled oscillator (VCO) based on negative resistance principle is presented uti-lizing commercially available InGaP/GaAs hetero-junction bipolar transistor (HBT) technology. This VCO is de... A monolithic voltage controlled oscillator (VCO) based on negative resistance principle is presented uti-lizing commercially available InGaP/GaAs hetero-junction bipolar transistor (HBT) technology. This VCO is de-signed for 5GHz-band wireless applications. Except for bypass and decoupled capacitors,no external component is needed for real application. Its measured output frequency range is from 4.17 to 4.56GHz,which is very close to the simulation one. And the phase noise at an offset frequency of 1MHz is -112dBc/Hz. The VCO core dissipates 15.5mW from a 3.3V supply,and the output power ranges from 0 to 2dBm. To compare with other oscillators,the figure of merit is calculated,which is about -173.2dBc/Hz. Meanwhile, the principle and design method of nega-tive resistance oscillator are also discussed. 展开更多
关键词 VCO MMIC wireless communication InGaP/GaAs HBT
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An Accurate 1.08GHz CMOS LC Voltage-Controlled Oscillator 被引量:1
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作者 唐长文 何捷 +1 位作者 菅洪彦 闵昊 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2005年第5期867-872,共6页
An accurate 1.08GHz CMOS LC voltage-controlled oscillator is implemented in a 0.35μm standard 2P4M CMOS process.A new convenient method of calculating oscillator period is presented.With this period calculation tech... An accurate 1.08GHz CMOS LC voltage-controlled oscillator is implemented in a 0.35μm standard 2P4M CMOS process.A new convenient method of calculating oscillator period is presented.With this period calculation technique,the frequency tuning curves agree well with the experiment.At a 3.3V supply,the LC-VCO measures a phase noise of -82.2dBc/Hz at a 10kHz frequency offset while dissipating 3.1mA current.The chip size is 0.86mm×0.82mm. 展开更多
关键词 MOS varactor LC tank voltage-controlled oscillator oscillator tuning curve
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体波石英晶体元件的功率消耗 被引量:1
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作者 Shawn Logan 《今日电子》 2010年第5期29-30,共2页
由体波石英晶体元件构成的振荡电路和压控振荡电路谐振元素具有卓越的长期和短期频率稳定度。最早使用体波石英晶体来控制振荡电路频率的历史可以追溯到1919年,当时,卫斯理大学(Wesleyan University)的W.G.Cady教授首先使用了一... 由体波石英晶体元件构成的振荡电路和压控振荡电路谐振元素具有卓越的长期和短期频率稳定度。最早使用体波石英晶体来控制振荡电路频率的历史可以追溯到1919年,当时,卫斯理大学(Wesleyan University)的W.G.Cady教授首先使用了一片石英晶体来控制振荡器的输出频率。 展开更多
关键词 石英晶体元件 功率消耗 体波 短期频率稳定度 压控振荡电路 输出频率 振荡
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A Compact Ka-Band PHEMT MMIC Voltage Controlled Oscillator
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作者 余稳 孙晓玮 +1 位作者 钱蓉 张义门 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2005年第6期1111-1115,共5页
A compact Ka-band monolithic microwave integrated circuit(MMIC) voltage controlled oscillator (VCO) with wide tuning range and high output power,which is based on GaAs PHEMT process,is presented.A method is introduced... A compact Ka-band monolithic microwave integrated circuit(MMIC) voltage controlled oscillator (VCO) with wide tuning range and high output power,which is based on GaAs PHEMT process,is presented.A method is introduced to reduce the chip size and to increase the bandwidth of operation.The procedure to design a MMIC VCO is also described here.The measured oscillating frequency of the MMIC VCO is 36±1.2GHz and the output power is 10±1dBm.The fabricated MMIC chip size is 1.3mm×1.0mm. 展开更多
关键词 VCO MMIC KA-BAND active-biasing PHEMT
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Monolithical Integrated CMOS Injected Synchronized Ring
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作者 刘丽 王志功 +2 位作者 林其松 熊明珍 章丽 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2004年第7期762-765,共4页
Oscillator IC technique is developed by combining injecting synchronization technique with a ring VCO.Using the technique,a novel 2 488GHz of monolithical integrated injected synchronized ring VCO (ISRVCO) is realize... Oscillator IC technique is developed by combining injecting synchronization technique with a ring VCO.Using the technique,a novel 2 488GHz of monolithical integrated injected synchronized ring VCO (ISRVCO) is realized in a standard 0 25μm CMOS process.The ISRVCO is characterized by the following performances: -100dBc /Hz@1MHz at free running frequency,-91 7dBc/Hz@10kHz when injection is locked.With the 3 3V of power supply,the tuning range is 150MHz and the locking range is 100MHz with 50m V p p signal injection. 展开更多
关键词 VCO PLL CRC injection synchronization optical transmission systems
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Design of 1GHz Local Oscillator with DLL -Based Frequency Multiplier Technique
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作者 李金城 仇玉林 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2001年第8期967-970,共4页
A new method of synthesizing 1GHz based on a 0 5μm CMOS D LL is proposed,which can synthesize frequency with simple logic and amplifiers.T he designed frequency synthesizer consists of a DLL (Delay-Locked Loop) and... A new method of synthesizing 1GHz based on a 0 5μm CMOS D LL is proposed,which can synthesize frequency with simple logic and amplifiers.T he designed frequency synthesizer consists of a DLL (Delay-Locked Loop) and a b uilding block of synthesizing logic.The reference frequency input into this freq uency synthesizer is 25MHz and the synthesized frequency is 1GHz. 展开更多
关键词 DLL PLL frequency synthesizer VCDL VCO transce iver local oscillator
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Design of 622 Mb/s Clock-recovery Monolithic IC for Optical Communication System
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作者 ZHANGYaqi ZHAOJie 《Semiconductor Photonics and Technology》 CAS 1998年第3期159-165,173,共8页
A monolithic clock-recovery circuit used in 622 Mb/s optical communication system is designed,which is based on the phase-locked loop theory,and uses bipolar transistor model.It overcomes the shortcoming of clock reco... A monolithic clock-recovery circuit used in 622 Mb/s optical communication system is designed,which is based on the phase-locked loop theory,and uses bipolar transistor model.It overcomes the shortcoming of clock recovery method based on filter,and implements monolithic clock-recovery IC.The designed circuits include phase detector,voltage-controlled oscillator and loop filter.Among them,the voltage-control oscillator is a modified two-stage ring oscillator,which provides quadrature clock signals and presents wide voltage-controlled range and high voltage-controlling sensitivity. 展开更多
关键词 Clock-recovery Phase Detector Phase-locked Loop Voltage-controlled Oscillator
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玻色-费米气体量子简并光学偶极阱的设计 被引量:6
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作者 柴世杰 王鹏军 +2 位作者 付正坤 黄良辉 张靖 《量子光学学报》 CSCD 北大核心 2012年第2期171-177,共7页
实现了将预冷却(温度约为1~2μK)的87 Rb和40 K原子装载到远红失谐的光学偶极力阱中,继而利用逐步降低光强的方法对其进行蒸发冷却,获得了87 Rb原子的玻色-爱因斯坦凝聚(BEC),并用协同冷却的方法得到了40 K原子的量子简并(DFG)。实验... 实现了将预冷却(温度约为1~2μK)的87 Rb和40 K原子装载到远红失谐的光学偶极力阱中,继而利用逐步降低光强的方法对其进行蒸发冷却,获得了87 Rb原子的玻色-爱因斯坦凝聚(BEC),并用协同冷却的方法得到了40 K原子的量子简并(DFG)。实验上通过光纤传输远红失谐激光束降低了光束指向性的抖动,又利用光强反馈伺服系统抑制远红失谐激光的强度抖动,提高了获得玻色-爱因斯坦凝聚和简并费米气体的重复性和稳定性。实验上得到玻色-爱因斯坦凝聚的原子数达8.48×105个,简并费米气体的原子数量约为3.34×106个。 展开更多
关键词 1064 nm光学偶极力阱 光阱蒸发冷却 压控振荡电路
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