Power divider and power combiner using dual band - composite right / left handed(CRLH) transmission line

A technology of power divider and power combination, which is applied to waveguide-type devices, circuits, connecting devices, etc., can solve the problem that the stop-band characteristics cannot be improved, and achieve the effect of solving the problem of limited operating frequency and improving the stop-band characteristics.
CN101589506AInactive Publication Date: 2009-11-25E M W ANTENNA CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
E M W ANTENNA CO LTD
Publication Date
2009-11-25
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The present invention relates to a power divider and a power combiner employing dual band-Composite Right / Left-Handed (CRLH) transmission lines. A power divider including an input terminal and two output terminals according to the present invention includes two transmission lines each having two terminals connected to the input terminal and the output terminals, respectively, and two short-stubs having one terminals connected to the output terminals, respectively, and the other terminals connected to grounds. The transmission line may employ a first dual band-CRLH transmission line having a double value of a termination impedance, which is substantially connected to the output terminal, as a characteristic impedance, and the short-stub may employ a second dual band-CRLH transmission line, which has substantially the same value as that of the termination impedance as a characteristic impedance. The first dual band-CRLH transmission line and the second dual band-CRLH transmission line generate phase delay of 90 degrees in a high frequency band and phase delay of -90 degrees in a low frequency band with respect to an input signal.
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Description

technical field

[0001] The present invention relates to a power divider and a power combiner utilizing dual-band-CRLH (mixed right / left-hand: CompositeRight / Left-Handed) transmission lines, and in particular to an improved Wilkinson power distribution by utilizing the above-mentioned dual-band-CRLH transmission lines It is a power divider and power combiner that solves the problem of stop-band characteristics caused by limited operating frequency and broadband. Background technique

[0002] A power divider is a circuit that divides the input power in an RF (Radio Frequency) circuit at a certain ratio and distributes it to the output port. The isolation between the two output ports can effectively prevent the change of circuit characteristics caused by the mutual influence of the two ports. In addition, the power divider can also be used as a power combiner by switching the input / output ports.

[0003] In the prior art, the most commonly used power divider / combiner is the W...

Claims

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