A 2. 4GHz CMOS monolithic transceiver front-end for IEEE 802. llb wireless LAN applications is presented. The receiver and transmitter are both of superheterodyne structure for good system performance. The frontend co...A 2. 4GHz CMOS monolithic transceiver front-end for IEEE 802. llb wireless LAN applications is presented. The receiver and transmitter are both of superheterodyne structure for good system performance. The frontend consists of five blocks., low noise amplifier,down-converter, up-converter, pre-amplifier, and LO buffer. Their input/output impedance are all on-chip matched to 50 Ω except the down-converter which has open-drain outputs. The transceiver RF front-end has been implemented in a 0. 18μm CMOS process. When the LNA and the down-converter are directly connected, the measured noise figure is 5.2dB, the measured available power gain 12. 5dB, the input l dB compression point --18dBm,and the third-order input intercept point --7dBm. The receiver front-end draws 13.6mA currents from the 1.8V power supply. When the up-converter and pre-amplifier are directly connected, the measured noise figure is 12.4dB, the power gain is 23. 8dB, the output ldB compression point is 1.5dBm, and the third-order output intercept point is 16dBm. The transmitter consumes 27.6mA current from the 1.8V power supply.展开更多
The future of wireless systems is anticipated to revolutionize human connectivity through a diverse range of applications.The integration of multiple wireless functionalities into a unified system presents a critical ...The future of wireless systems is anticipated to revolutionize human connectivity through a diverse range of applications.The integration of multiple wireless functionalities into a unified system presents a critical challenge due to conflicting requirements in transceiver architecture and signal processing.Recent investigations are directing attention towards the development of systems that serve dual functions,like simultaneous wireless information and power transfer and radar-communication,aimed at boosting operational efficiency and ensuring seamless communication among different wireless capabilities.This review paper aims to discuss the architectural aspects of the integration of radar sensing,data communication,and power transfer.Firstly,the integration of radar sensing and data communication is studied for both cooperating and non-cooperating radar systems with conventional and interferometric architectures.Secondly,the power harvesting approach and internal energy recycling are discussed for the fusion of data communication and energy harvesting.Thirdly,radar sensing and power transfer integration is considered with special focus on harmonic backscattering and self-powered radars.Lastly,a roadmap for next-generation multifunction systems is outlined by considering several scenarios of multiplexing and architectures.展开更多
A review on Terahertz end-to-end systems with an emphasis on integrated approaches is presented.Four major catalogs of THz integrated systems,including THz communication systems,THz imaging systems,THz radars,and THz ...A review on Terahertz end-to-end systems with an emphasis on integrated approaches is presented.Four major catalogs of THz integrated systems,including THz communication systems,THz imaging systems,THz radars,and THz spectroscopy systems,are reviewed in this article.The performance of integrated systems is compared with non-integrated solutions,followed by a discussion on the trend in future research avenues and applications.展开更多
文摘A 2. 4GHz CMOS monolithic transceiver front-end for IEEE 802. llb wireless LAN applications is presented. The receiver and transmitter are both of superheterodyne structure for good system performance. The frontend consists of five blocks., low noise amplifier,down-converter, up-converter, pre-amplifier, and LO buffer. Their input/output impedance are all on-chip matched to 50 Ω except the down-converter which has open-drain outputs. The transceiver RF front-end has been implemented in a 0. 18μm CMOS process. When the LNA and the down-converter are directly connected, the measured noise figure is 5.2dB, the measured available power gain 12. 5dB, the input l dB compression point --18dBm,and the third-order input intercept point --7dBm. The receiver front-end draws 13.6mA currents from the 1.8V power supply. When the up-converter and pre-amplifier are directly connected, the measured noise figure is 12.4dB, the power gain is 23. 8dB, the output ldB compression point is 1.5dBm, and the third-order output intercept point is 16dBm. The transmitter consumes 27.6mA current from the 1.8V power supply.
文摘The future of wireless systems is anticipated to revolutionize human connectivity through a diverse range of applications.The integration of multiple wireless functionalities into a unified system presents a critical challenge due to conflicting requirements in transceiver architecture and signal processing.Recent investigations are directing attention towards the development of systems that serve dual functions,like simultaneous wireless information and power transfer and radar-communication,aimed at boosting operational efficiency and ensuring seamless communication among different wireless capabilities.This review paper aims to discuss the architectural aspects of the integration of radar sensing,data communication,and power transfer.Firstly,the integration of radar sensing and data communication is studied for both cooperating and non-cooperating radar systems with conventional and interferometric architectures.Secondly,the power harvesting approach and internal energy recycling are discussed for the fusion of data communication and energy harvesting.Thirdly,radar sensing and power transfer integration is considered with special focus on harmonic backscattering and self-powered radars.Lastly,a roadmap for next-generation multifunction systems is outlined by considering several scenarios of multiplexing and architectures.
文摘A review on Terahertz end-to-end systems with an emphasis on integrated approaches is presented.Four major catalogs of THz integrated systems,including THz communication systems,THz imaging systems,THz radars,and THz spectroscopy systems,are reviewed in this article.The performance of integrated systems is compared with non-integrated solutions,followed by a discussion on the trend in future research avenues and applications.
