Power combiners and dividers based on composite right and left handed metamaterial structures
First Claim
Patent Images
1. A composite right and left handed (CRLH) metamaterial device for dividing or combining power, comprising:
- a plurality of branch CRLH transmission lines, each of the plurality of branch CRLH transmission lines comprising one or more CRLH unit cells having a right handed series inductance, a right handed shunt capacitance, a series capacitance, and a shunt inductance; and
a signal line electrically connected to each of the plurality of branch CRLH transmission lines;
wherein the signal line is configured to;
receive power signals from each of the plurality of branch CRLH transmission lines and to output a corresponding combined power signal; and
receive a power signal from another component and distribute the power signal amongst the plurality of branch CRLH transmission lines.
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Abstract
Techniques, apparatus and systems that use composite left and right handed (CRLH) metamaterial structures to combine and divide electromagnetic signals at multiple frequencies. The metamaterial properties permit significant size reduction over a conventional N-way radial power combiner or divider. Dual-band serial power combiners and dividers and single-band and dual-band radial power combiners and dividers are described.
20 Citations
18 Claims
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1. A composite right and left handed (CRLH) metamaterial device for dividing or combining power, comprising:
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a plurality of branch CRLH transmission lines, each of the plurality of branch CRLH transmission lines comprising one or more CRLH unit cells having a right handed series inductance, a right handed shunt capacitance, a series capacitance, and a shunt inductance; and a signal line electrically connected to each of the plurality of branch CRLH transmission lines; wherein the signal line is configured to; receive power signals from each of the plurality of branch CRLH transmission lines and to output a corresponding combined power signal; and receive a power signal from another component and distribute the power signal amongst the plurality of branch CRLH transmission lines. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for dividing or combining power based on composite right and left handed (CRLH) metamaterial structures, comprising:
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using at least two CRLH transmission lines, each of the at least two CRLH transmission lines comprising one or more CRLH unit cells having a right handed series inductance, a right handed shunt capacitance, a series capacitance, and a shunt inductance; and electrically connecting one terminal of a signal feed line as a common electrical connect to one terminal of the at least two CRLH transmission lines to combine power from the at least two CRLH transmission lines to output a combined signal at the operating signal frequency or to distribute power in a signal received by the signal feed line terminal at the operating signal frequency to the at least two CRLH transmission lines. - View Dependent Claims (8, 9, 10, 11)
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12. A composite right and left handed (CRLH) metamaterial device for dividing or combining power, comprising:
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a CRLH transmission line comprising a plurality of CRLH unit cells coupled in series, each of the plurality of CRLH unit cells structured to have a first electrical length that corresponds to a phase of zero degrees, 180 degrees or a multiple of 180 degrees at a first signal frequency and a second, different electrical length that corresponds to a phase of zero degrees, 180 degrees or a multiple of 180 degrees at a second, different signal frequency; wherein at least one of the plurality of CRLH unit cells has a third electrical length that corresponds to a phase of 90 degrees or an odd multiple of 90 degrees at the first signal frequency and a fourth electrical length that is different from the third electrical length and corresponds to a phase of 90 degrees or an odd multiple of 90 degrees at the second signal frequency. - View Dependent Claims (13, 14, 15, 16)
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17. A composite right and left handed (CRLH) metamaterial device for dividing or combining power, comprising:
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a dual-band CRLH transmission line comprising a plurality of CRLH unit cells coupled in series, each of the plurality of CRLH unit cells having a first electrical length that is a multiple of +/−
180 degrees at a first signal frequency and a second, different electrical length that is a different multiple of +/−
180 degrees at a second signal frequency; andwherein at least one of the plurality of CRLH unit cells has a third electrical length that is an odd multiple of +/−
90 degrees at the first signal frequency and a fourth, different electrical length that is a different odd multiple of +/−
90 degrees at the second signal frequency. - View Dependent Claims (18)
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Specification