Integrated quadrature splitter-combiner and balun
First Claim
1. An integrated quadrature splitter-combiner and balun comprising:
- a transmission line balun operably connected to between a first port and a second port and between a third port and a fourth port;
a first capacitor operably connected across said transmission line balun;
a second capacitor operably connected to said first port and said third portbalun;
a third capacitor operably connected to said second port and said fourth portbalun;
wherein said second capacitor, said third capacitor, and said transmission line balun combine to form an RF splitter-combiner to split a balanced RF signal received at said first port and said third port into a first and second unbalanced quadrature RF signal transmitted at said second port and said fourth port; and
wherein said second capacitor, said third capacitor, and said transmission line balun combines said first and second unbalanced quadrature RF signals received at said second port and said fourth port into said balanced RF signal transmitted at said first port and said third port.
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Accused Products
Abstract
An integrated quadrature splitter-combiner and balun comprising: a transmission line balun operably connected to a first port and a second port; a first capacitor operably connected across the transmission line balun; a second capacitor operably connected to the first port and said balun; and a third capacitor operably connected to the second port and the balun. The second capacitor, the third capacitor, and the transmission line balun combine to form an RF splitter-combiner to split a balanced RF signal received at the first port into a first and second unbalanced quadrature RF signal transmitted at the second port and combines the first and second unbalanced quadrature RF signals received at the second port into the balanced RF signal transmitted at the first port.
33 Citations
25 Claims
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1. An integrated quadrature splitter-combiner and balun comprising:
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a transmission line balun operably connected to between a first port and a second port and between a third port and a fourth port;
a first capacitor operably connected across said transmission line balun;
a second capacitor operably connected to said first port and said third portbalun;
a third capacitor operably connected to said second port and said fourth portbalun;
wherein said second capacitor, said third capacitor, and said transmission line balun combine to form an RF splitter-combiner to split a balanced RF signal received at said first port and said third port into a first and second unbalanced quadrature RF signal transmitted at said second port and said fourth port; and
wherein said second capacitor, said third capacitor, and said transmission line balun combines said first and second unbalanced quadrature RF signals received at said second port and said fourth port into said balanced RF signal transmitted at said first port and said third port. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An integrated quadrature splitter and balun comprising:
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a transmission line balun operably connected between a first port and a second port and between a third port and a fourth port;
a first capacitor operably connected across said transmission line balun;
a second capacitor operably connected to said first port and said third port;
a third capacitor operably connected to said second port and said fourth port;
wherein said second capacitor, said third capacitor, and said transmission line balun combine to form an RF splitter to split an balanced RF signal received at said first port and said third port into a first and second unbalanced quadrature RF signals transmitted at said second port and said fourth port. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An integrated quadrature combiner and balun comprising:
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a transmission line balun operably connected to between a first port and a second port and a third port and a fourth port;
a first capacitor operably connected across said transmission line balun;
a second capacitor operably connected to said first port and said third portbalun;
a third capacitor operably connected to said second port and said fourth port;
wherein said second capacitor, said third capacitor, and said transmission line balun combine to form an RF combiner to combine an unbalanced quadrature RF signal received at said second port and said fourth port into a balanced RF signal transmitted at said first port and said third port. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A system comprising:
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an imaging system with quadrature RF coils;
an integrated quadrature splitter or combiner and balun comprising;
a transmission line balun operably connected between a first port and a second port and between a third port and a fourth port;
a first capacitor operably connected across said transmission line balun;
a second capacitor operably connected to said first port and said third port;
a third capacitor operably connected to said second port and said fourth port;
wherein said second capacitor, said third capacitor, and said transmission line balun combine to form an RF splitter or combiner to either split a balanced RF signal received at said first port and said third port into a first and second unbalanced quadrature RF signals transmitted at said second port and said fourth port;
or to combine said first and second unbalanced quadrature RF signals received at said second port and said fourth port into said balanced RF signal transmitted at said first port and said third port.
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23. A magnetic system comprising:
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a magnetic resonance imaging system with quadrature RF coils;
an integrated quadrature splitter-combiner and balun comprising;
a transmission line balun operably connected between a first port and a second port and between a third port and a fourth port;
a first capacitor operably connected across said transmission line balun;
a second capacitor operably connected to said first port and said third port;
a third capacitor operably connected to said second port and said fourth port;
wherein said second capacitor, said third capacitor, and said transmission line balun combine to form an RF splitter or combiner to either;
split a balanced RF signal received at said first port and said third port into a first and second unbalanced quadrature RF signals transmitted at said second port and said fourth port;
or to combine said first and second unbalanced quadrature RF signals received at said second port and said fourth port into said balanced RF signal transmitted at said first port and said third port.
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24. A method of splitting a balanced RF signal into unbalanced quadrature RF signals comprising:
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receiving a balanced RF signal at a first port and a third port of an integrated quadrature splitter and balun, said integrated quadrature splitter and balun comprising;
a transmission line balun operably connected between said first port and a second port and between said third port and a fourth port;
a first capacitor operably connected across said transmission line balun;
a second capacitor operably connected to said first port and said third port;
a third capacitor operably connected to said second port and said fourth port;
wherein said second capacitor, said third capacitor, and said transmission line balun combine to form an RF splitter; and
generating a first and second unbalanced quadrature RF signals transmitted at said second port and said fourth port.
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25. A method of combining unbalanced quadrature RF signals into a balanced RF signal comprising:
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receiving a first and a second unbalanced quadrature RF signals at a second port and a fourth port of an integrated quadrature combiner and balun, said integrated quadrature combiner and balun comprising;
a transmission line balun operably connected between first port and said second port and a third port and a fourth port;
a first capacitor operably connected across said transmission line balun;
a second capacitor operably connected to said first port and said third port;
a third capacitor operably connected to said second port and said fourth port;
wherein said second capacitor, said third capacitor, and said transmission line balun combine to form an RF combiner; and
generating a balanced RF signal transmitted at said first port and said fourth port.
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Specification