Metamaterial power amplifier systems
First Claim
Patent Images
1. A bias circuit for biasing a transistor, comprising:
- a first transmission line (“
TL”
) having a first end and a second end;
a second TL having a third end and a fourth end;
a third TL comprising a composite right and left handed (“
CRLH”
) structure and having a fifth end and a sixth end;
whereinthe first TL, the second TL and the third TL are coupled radially to form a common portion with the first end, third end and the fifth end;
the first TL is configured to receive a bias signal from an external supply through the second end; and
the second TL is configured to send the bias signal to an RF signal path through the fourth end to bias the transistor coupled to the RF signal path.
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Abstract
Power amplifying systems and modules and components therein are designed based on CRLH structures, providing high efficiency and linearity.
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Citations
20 Claims
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1. A bias circuit for biasing a transistor, comprising:
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a first transmission line (“
TL”
) having a first end and a second end;a second TL having a third end and a fourth end; a third TL comprising a composite right and left handed (“
CRLH”
) structure and having a fifth end and a sixth end;
whereinthe first TL, the second TL and the third TL are coupled radially to form a common portion with the first end, third end and the fifth end; the first TL is configured to receive a bias signal from an external supply through the second end; and the second TL is configured to send the bias signal to an RF signal path through the fourth end to bias the transistor coupled to the RF signal path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for operating a bias circuit for biasing a transistor, the bias circuit comprising a first TL having a first end and a second end, a second TL having a third end and a fourth end, a third TL comprising a CRLH structure and having a fifth end and a sixth end, wherein the first TL, the second TL and the third TL are coupled radially to form a common portion with the first end, third end and the fifth end, the method comprising:
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receiving, at the first TL, a bias signal from an external supply through the second end; and sending, from the second TL, the bias signal to an RF signal path through the fourth end to bias the transistor coupled to the RF signal path. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A bias circuit for biasing a transistor, comprising:
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a first transmission line (“
TL”
) having a first end and a second end;a second TL having a third end and a fourth end; means for providing multiple phase responses, said means for providing having a fifth end and a sixth end;
whereinthe first TL, the second TL and the means for providing are coupled radially to form a common portion with the first end, third end and the fifth end; the first TL is configured to receive a bias signal from an external supply through the second end; and the second TL is configured to send the bias signal to an RF signal path through the fourth end to bias the transistor coupled to the RF signal path. - View Dependent Claims (18, 19, 20)
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Specification