+

Kurpad et al., 2004 - Google Patents

Implementation of coil integrated RF power MOSFET as voltage controlled current source in a transmit phased array coil

Kurpad et al., 2004

Document ID
17273170814826508921
Author
Kurpad K
Boskamp E
Wright S
Publication year
Publication venue
Proceedings of the 12th Annual Meeting of ISMRM, Kyoto, Japan

External Links

Continue reading at scholar.google.com (other versions)

Classifications

    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189High frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19High frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217Class D power amplifiers; Switching amplifiers
    • H03F3/2176Class E amplifiers
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/56Modifications of input or output impedances, not otherwise provided for
    • H03F1/565Modifications of input or output impedances, not otherwise provided for using inductive elements
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34Negative-feedback-circuit arrangements with or without positive feedback
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38Impedance-matching networks
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00Arrangements or instruments for measuring magnetic variables
    • G01R33/20Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/36Electrical details, e.g. matching or coupling of the coil to the receiver
    • G01R33/3628Tuning/matching of the transmit/receive coil
    • G01R33/3635Multi-frequency operation

Similar Documents

Publication Publication Date Title
CN101435856B (en) Ultra low output impedance RF power amplifier for parallel excitation
Sussman-Fort et al. Non-Foster impedance matching of electrically-small antennas
US6982554B2 (en) System and method for operating transmit or transmit/receive elements in an MR system
Albulet RF power amplifiers
US8030932B2 (en) Bandwidth expansion in magnetic resonance
Mandal et al. An ultra-broadband low-frequency magnetic resonance system
Gudino et al. On‐coil multiple channel transmit system based on class‐D amplification and pre‐amplification with current amplitude feedback
Jurkov et al. Lossless multiway power combining and outphasing for high-frequency resonant inverters
WO2007100696A2 (en) Magnetic resonance imaging system with a class-e radio frequency amplifier
US9989604B2 (en) Multiturn MRI coils in combination with current mode class D amplifiers
US9766192B2 (en) Broadband circuit for nuclear magnetic resonance
Kurpad et al. RF current element design for independent control of current amplitude and phase in transmit phased arrays
US20050110576A1 (en) Amplifier
Xu et al. 1 kW MHz wideband class E power amplifier
Kurpad et al. Implementation of coil integrated RF power MOSFET as voltage controlled current source in a transmit phased array coil
US6650180B2 (en) Totem pole rf amplifiers with phase and amplitude correction
US20230243905A1 (en) Adaptable dual-tuned optically controlled on-coil amplifer for high-field magnetic resonance imaging systems
Sousa et al. Novel pulsed switched power supply for a fast field cycling NMR spectrometer
Abuelhaija et al. Power amplifier for magnetic resonance imaging using unconventional Cartesian feedback loop
Lee et al. Radiofrequency current source (RFCS) drive and decoupling technique for parallel transmit arrays using a high‐power metal oxide semiconductor field‐effect transistor (MOSFET)
Ariando et al. A compact GaNFET-based power amplifier for ASIC-based miniature NMR spectrometers
CN209878977U (en) Phase control element and magnetic resonance tomography apparatus
US9160289B2 (en) Broadband power amplifier having high efficiency
Beley et al. Analytical Design of a Finite Input Inductance 34.5 MHz Class E Inverter for Wireless Power Transfer
Hollingsworth et al. Tuning ultra-low output impedance amplifiers for optimal power and decoupling in parallel transmit MRI
点击 这是indexloc提供的php浏览器服务,不要输入任何密码和下载