Pub Date : 2013-10-24DOI: 10.1109/SBCCI.2013.6644876
K. Brito, F. Sousa, V. L. Sobral, R. N. Lima, R. Freire
In this work an RC oscillator, operating at 404.5MHz, MICS (Medical Implant Communication Service) band, is evaluated for both ASK/FSK modulation and injection locking based FSK (Frequency Shift Keying) demodulation. The oscillator, which consists of a cross-coupled relaxation topology, is analyzed and evaluated in 130 nm IBM CMOS technology. Injection locking is driven by a differential current signal. ASK (Amplitude Shift Keying) and FSK modulation are performed by controlling the cross-coupled bias current and the MOS varactor capacitance respectively. Simulation results show that, at the free-running frequency of 404.5 MHz, the oscillator presents a phase noise of -126.36 and -133 dBc/Hz at 1MHz and 10 MHz offset frequency respectively, while consuming 50 micro Watts of power from a 1V supply voltage. The oscillator frequency locking range, for a 1 micro Ampère injected current, is 398 MHz to 410 MHz which covers the whole MICS band.
在这项工作中，RC振荡器工作在404.5MHz, MICS(医疗植入通信服务)频段，对ASK/FSK调制和基于注入锁定的FSK(频移键控)解调进行了评估。该振荡器由交叉耦合弛豫拓扑组成，并在130 nm IBM CMOS技术上进行了分析和评估。注入锁是由差分电流信号驱动的。通过控制交叉耦合偏置电流和MOS变容电容分别实现了ASK(移幅键控)和FSK调制。仿真结果表明，在自由运行频率为404.5 MHz时，振荡器在1MHz和10mhz偏置频率下的相位噪声分别为-126.36和-133 dBc/Hz，而在1V电源电压下功耗为50微瓦。对于1微安培注入电流，振荡器频率锁定范围为398 MHz至410 MHz，覆盖整个MICS频段。
{"title":"A 400 MHz reconfigurable injection-locking based RC oscillator for ASK/FSK modulation","authors":"K. Brito, F. Sousa, V. L. Sobral, R. N. Lima, R. Freire","doi":"10.1109/SBCCI.2013.6644876","DOIUrl":"https://doi.org/10.1109/SBCCI.2013.6644876","url":null,"abstract":"In this work an RC oscillator, operating at 404.5MHz, MICS (Medical Implant Communication Service) band, is evaluated for both ASK/FSK modulation and injection locking based FSK (Frequency Shift Keying) demodulation. The oscillator, which consists of a cross-coupled relaxation topology, is analyzed and evaluated in 130 nm IBM CMOS technology. Injection locking is driven by a differential current signal. ASK (Amplitude Shift Keying) and FSK modulation are performed by controlling the cross-coupled bias current and the MOS varactor capacitance respectively. Simulation results show that, at the free-running frequency of 404.5 MHz, the oscillator presents a phase noise of -126.36 and -133 dBc/Hz at 1MHz and 10 MHz offset frequency respectively, while consuming 50 micro Watts of power from a 1V supply voltage. The oscillator frequency locking range, for a 1 micro Ampère injected current, is 398 MHz to 410 MHz which covers the whole MICS band.","PeriodicalId":203604,"journal":{"name":"2013 26th Symposium on Integrated Circuits and Systems Design (SBCCI)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129968592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：