F. Sinhababu, A. Mukherjee, S. Sarkar, B. Chatterjee, A. Sarkar
{"title":"相位调制器对科斯塔斯环路性能的影响","authors":"F. Sinhababu, A. Mukherjee, S. Sarkar, B. Chatterjee, A. Sarkar","doi":"10.1007/s12243-024-01048-y","DOIUrl":null,"url":null,"abstract":"<p> In the present work, a modified Costas loop is presented with the help of mathematical modeling and numerical simulation. The voltage-controlled oscillator output phase along with frequency is controlled using the input control voltage. The modified loop is tested as frequency demodulator circuit where the improvement in sideband attenuation is clearly visible using an additional phase control arrangement. Numerical simulation result leads to a similar conclusion when the ratio of third harmonic to first harmonic and the ratio of first sideband attenuation to carrier are obtained for different proportions of the phase control. Noise bandwidth and lock range of the modified loop are investigated with special emphasis on the dependence of these parameters on the phase modulator gain. Lock range of the loop is evaluated analytically. An excellent demodulation capability of the loop has been reported in the presence of the additional phase control. Analytical results coupled with numerical findings presented are in good agreement.</p>","PeriodicalId":50761,"journal":{"name":"Annals of Telecommunications","volume":null,"pages":null},"PeriodicalIF":1.8000,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Impact of phase modulator on the performance of Costas loop\",\"authors\":\"F. Sinhababu, A. Mukherjee, S. Sarkar, B. Chatterjee, A. Sarkar\",\"doi\":\"10.1007/s12243-024-01048-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p> In the present work, a modified Costas loop is presented with the help of mathematical modeling and numerical simulation. The voltage-controlled oscillator output phase along with frequency is controlled using the input control voltage. The modified loop is tested as frequency demodulator circuit where the improvement in sideband attenuation is clearly visible using an additional phase control arrangement. Numerical simulation result leads to a similar conclusion when the ratio of third harmonic to first harmonic and the ratio of first sideband attenuation to carrier are obtained for different proportions of the phase control. Noise bandwidth and lock range of the modified loop are investigated with special emphasis on the dependence of these parameters on the phase modulator gain. Lock range of the loop is evaluated analytically. An excellent demodulation capability of the loop has been reported in the presence of the additional phase control. Analytical results coupled with numerical findings presented are in good agreement.</p>\",\"PeriodicalId\":50761,\"journal\":{\"name\":\"Annals of Telecommunications\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.8000,\"publicationDate\":\"2024-06-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Annals of Telecommunications\",\"FirstCategoryId\":\"94\",\"ListUrlMain\":\"https://doi.org/10.1007/s12243-024-01048-y\",\"RegionNum\":4,\"RegionCategory\":\"计算机科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"TELECOMMUNICATIONS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Annals of Telecommunications","FirstCategoryId":"94","ListUrlMain":"https://doi.org/10.1007/s12243-024-01048-y","RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"TELECOMMUNICATIONS","Score":null,"Total":0}
Impact of phase modulator on the performance of Costas loop
In the present work, a modified Costas loop is presented with the help of mathematical modeling and numerical simulation. The voltage-controlled oscillator output phase along with frequency is controlled using the input control voltage. The modified loop is tested as frequency demodulator circuit where the improvement in sideband attenuation is clearly visible using an additional phase control arrangement. Numerical simulation result leads to a similar conclusion when the ratio of third harmonic to first harmonic and the ratio of first sideband attenuation to carrier are obtained for different proportions of the phase control. Noise bandwidth and lock range of the modified loop are investigated with special emphasis on the dependence of these parameters on the phase modulator gain. Lock range of the loop is evaluated analytically. An excellent demodulation capability of the loop has been reported in the presence of the additional phase control. Analytical results coupled with numerical findings presented are in good agreement.
期刊介绍:
Annals of Telecommunications is an international journal publishing original peer-reviewed papers in the field of telecommunications. It covers all the essential branches of modern telecommunications, ranging from digital communications to communication networks and the internet, to software, protocols and services, uses and economics. This large spectrum of topics accounts for the rapid convergence through telecommunications of the underlying technologies in computers, communications, content management towards the emergence of the information and knowledge society. As a consequence, the Journal provides a medium for exchanging research results and technological achievements accomplished by the European and international scientific community from academia and industry.