SOLID-STATE HIGH-POWER RF-AMPLIFIER FOR PULSED NMR

被引：14

作者：

HOLLAND, GN

HEYSMOND, E

机构：

[1] Dept. of Phys., Univ. of Nottingham, Nottingham NG7 2RD, University Park

来源：

JOURNAL OF PHYSICS E-SCIENTIFIC INSTRUMENTS | 1979年 / 12卷 / 06期

关键词：

D O I：

10.1088/0022-3735/12/6/011

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

An amplifier capable of providing greater than 3 kW into a 50 Omega load is described. The unit, which is of modular construction, operates over the frequency range 1-22 MHz and is designed for a nuclear magnetic resonance imaging experiment. Each module produces up to 800 W peak pulse power for a 5% duty cycle. The module outputs are combined in a five-port hybrid combiner to generate the full output power. Particular attention is paid to the circuitry used to protect the high-power output stages.

引用

页码：480 / 483

页数：4

共 10 条

[1] RF MAGNETIC-FIELD PENETRATION, PHASE-SHIFT AND POWER DISSIPATION IN BIOLOGICAL TISSUE - IMPLICATIONS FOR NMR IMAGING [J].