Results 191 to 200 of about 30,504 (243)
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IEEE International Solid-State Circuits Conference
Large-scale mm-wave phased arrays are crucial for the success of next-generation 5G/6G communication. Yet, using a dense array of antennas inevitably leads to mutual coupling between nearby antennas, causing antenna impedance variations that depend on ...
Mohamed Eleraky +2 more
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Large-scale mm-wave phased arrays are crucial for the success of next-generation 5G/6G communication. Yet, using a dense array of antennas inevitably leads to mutual coupling between nearby antennas, causing antenna impedance variations that depend on ...
Mohamed Eleraky +2 more
semanticscholar +1 more source
Radio Frequency Integrated Circuits Symposium, 2018
There has been recent progress on CMOS non-magnetic circulators based on switch-based spatio-temporal conductivity modulation, but these initial demonstrations remain limited in transmitter power handling, linearity, and ability to combat antenna ...
A. Nagulu, A. Alú, H. Krishnaswamy
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There has been recent progress on CMOS non-magnetic circulators based on switch-based spatio-temporal conductivity modulation, but these initial demonstrations remain limited in transmitter power handling, linearity, and ability to combat antenna ...
A. Nagulu, A. Alú, H. Krishnaswamy
semanticscholar +1 more source
IEEE Transactions on Circuits and Systems Part 1: Regular Papers
This paper presents a novel Double-Balanced power amplifier (PA) architecture with an intrinsic load isolation. Derived from the generic load modulated balanced amplifier (LMBA), by designing the single-ended control amplifier (CA) as another balanced PA,
Jiachen Guo, Pingzhu Gong, Kenle Chen
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This paper presents a novel Double-Balanced power amplifier (PA) architecture with an intrinsic load isolation. Derived from the generic load modulated balanced amplifier (LMBA), by designing the single-ended control amplifier (CA) as another balanced PA,
Jiachen Guo, Pingzhu Gong, Kenle Chen
semanticscholar +1 more source
A Novel Double Balanced Architecture with VSWR Immunity for High Efficiency Power Amplifier
IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, 2019In this paper a high efficiency power amplifier is presented with quasi VSWR immunity. It is based on a new, high efficiency architecture, the Load Modulated Balanced Amplifier.
Kimon Vivien +3 more
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Simulation of VSWR in axisymmetric coaxial connector
Asia-Pacific Conference on Environmental Electromagnetics, 2003. CEEM 2003. Proceedings., 2003In this paper the finite-difference time-domain (FDTD) method and the transmission lines (TL) method are used respectively in the calculation of voltage standing wave ratio (VSWR) in an axisymmetric coaxial connector with nonuniform medium. Numerical results between the two methods are compared; more details of signal propagation in the connector can ...
null Song Zhan-hai +4 more
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IEEE International Solid-State Circuits Conference
Power amplifiers (PAs) are one of the essential parts of the mm-wave 5G phased-array transmitters (TXs), as they usually define the TX linearity, reliability, and efficiency. In the hybrid/analog beamforming architectures, the signal reaches the PA input
Masoud Pashaeifar +3 more
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Power amplifiers (PAs) are one of the essential parts of the mm-wave 5G phased-array transmitters (TXs), as they usually define the TX linearity, reliability, and efficiency. In the hybrid/analog beamforming architectures, the signal reaches the PA input
Masoud Pashaeifar +3 more
semanticscholar +1 more source
Radio Frequency Integrated Circuits Symposium
This paper presents a broadband 5G power amplifier robust to VSWR variations and featuring high efficiency up to deep power back-off in 28nm FD-SOI CMOS technology.
G. Diverrez +3 more
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This paper presents a broadband 5G power amplifier robust to VSWR variations and featuring high efficiency up to deep power back-off in 28nm FD-SOI CMOS technology.
G. Diverrez +3 more
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Real time measurement of VSWR with directional couplers
ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004., 2005In this paper a method of measuring VSWR is introduced and discussed. In this method, first, the power of incident wave and reflected wave is measured separately with relevant directional coupler and detector. Then the magnitude of voltage reflection coefficient and VSWR are calculated by MCU.
null Xinyuan Wang +2 more
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A Low VSWR Matching Technique (Correspondence)
IEEE Transactions on Microwave Theory and Techniques, 1956A variation on the method described by Feller and Weidner for abtaining low standing wave ratios over a frequency band has proven to be very useful in the design of low vswr microwave components. If curve A in Fig. 1 represents the input admittance of the device to be matched, the method described by Feller proceeds as follows: 1) Insert a value of ...
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A VSWR-rugged silicon bipolar RF power amplifier
Proceedings of the Bipolar/BiCMOS Circuits and Technology Meeting, 2005., 2005In this paper, the effect of emitter ballast on the ruggedness of RF power amplifiers is investigated. Silicon bipolar 1.8-GHz power amplifiers based on different ballasted transistors have been integrated and tested under load mismatch conditions. A ballasted device with 25-mV emitter voltage drop achieves the optimum trade-off between ruggedness and ...
A. SCUDERI +3 more
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