Impedance matching system and impedance matching device
A technology of impedance matching and impedance circuit, which is applied in the electronic field, can solve problems such as the difficulty of debugging the impedance matching network, and achieve the effect of simplifying the complexity of debugging and simplifying the matching process
Active Publication Date: 2014-09-17
SHANGHAI HUAWEI TECH CO LTD
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Problems solved by technology
[0003] At present, the impedance matching unit is mainly a circuit for matching the fundamental wave impedance, so that the harmonic impedance will affect various indicators in the circuit such as the gain, output power, linearity and efficiency of the amplifying circuit. It is especially obvious in the Doherty power amplifier; and another existing impedance matching unit is to form a matching network by comprehensively considering the fundamental impedance and harmonic impedance, but the debugging of this impedance matching network is difficult, and the matching network The change of will make the fundamental wave and each harmonic impedance change at the same time
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[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0025] see figure 1 , an impedance matching system provided by an embodiment of the present invention may include:
[0026] The first impedance circuit 10, the second impedance circuit 20 and the impedance matching device 30; wherein the impedance matching device 30 includes a reference impedance matching subunit 301, an adjustable Nth harmonic tuning circuit subunit 302 and an adjustable fundamental wave tuning circuit subunit In unit 303, the N is a natural numb...
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Disclosed in the embodiments of this application are an impedance matching system and apparatus. In which, an impedance matching system includes: a first impedance circuit, a second impedance circuit and an impedance matching apparatus, the impedance matching apparatus includes: a basic impedance matching subunit, an adjustable base wave resonance circuit subunit and an adjustable N sub-harmonic resonance circuit subunit, N is an natural number and greater than 1; the basic impedance matching subunit and the adjustable base wave resonance circuit subunit are used to match the base wave impedance between the first impedance circuit and the second impedance circuit; the adjustable N sub-harmonic resonance circuit subunit is used to match the N sub-harmonic impedance between the first impedance circuit and the second impedance circuit. Embodiments of this application benefit realize the respective matching of the base wave impedance and the harmonic impedance, and simplified the debugging complexity of circuit impedance matching.
Description
technical field [0001] The invention relates to the field of electronic technology, in particular to an impedance matching system and an impedance matching device. Background technique [0002] In existing impedance matching systems such as communication radio frequency systems, impedance matching between different units in the system is generally performed through impedance matching units. For example, the impedance of the radio frequency load circuit is 50 or 75 ohms, while the impedance of the radio frequency amplifier is often If the impedance is small, an impedance matching unit needs to be connected between the radio frequency amplifier and the radio frequency load, and the impedance matching unit makes the impedance of the radio frequency load match the output impedance of the radio frequency amplifier. [0003] At present, the impedance matching unit is mainly a circuit for matching the fundamental wave impedance, so that the harmonic impedance will affect various in...
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IPC IPC(8): H03H7/38
CPCH03H7/38
Inventor 陈聂丰夏宏亮曾军吴乔武胜波王雷
Owner SHANGHAI HUAWEI TECH CO LTD