发明名称 |
High impedance differential input preamplifier and antenna for MRI |
摘要 |
Antenna assemblies for magnetic resonance signals comprise a non-resonant loop antenna and a high impedance differential amplifier. The amplifier can include first and second high electron mobility transistors that have gates coupled to an antenna loop that is defined on a rigid substrate. The non-resonant loop has an effective length of less than about 1/10 of a wavelength of a signal to be detected. Arrays of such loops can be defined on the rigid substrate, and HEMTs for the loops secured to the substrate.
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申请公布号 |
US7683619(B2) |
申请公布日期 |
2010.03.23 |
申请号 |
US20060066244 |
申请日期 |
2006.09.11 |
申请人 |
THE STATE OF OREGEN ACTING BY AND THROUGH THE STATE BOARD OF HIGHER EDUCATION ON BEHALF OF THE UNIVERSITY OF OREGON |
发明人 |
SMITH JOLINDA C.;DAX CLIFFORD D.;NUNNALLY RAY L. |
分类号 |
G01V3/00 |
主分类号 |
G01V3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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