Harmonic suppression broadband patch coupler and method of adjusting power-dividing ratio and method of simultaneously achieving suppression broadband and second harmonics
A harmonic suppression and coupler technology, applied in the field of couplers, to achieve the effect of increased size, simple structure, and wide relative bandwidth
Active Publication Date: 2015-04-29
SYSU CMU SHUNDE INT JOINT RES INST
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[0008] However, the above studies on arbitrary output power ratio couplers for broadband and harmonic suppression can only achieve one of the functions of broadband or harmonic suppression, but fail to achieve both simultaneously and satisfy the arbitrary power ratio output function.
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[0042] The technical solutions adopted in the embodiments of the present invention will be described clearly and in detail below in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by persons of ordinary skill in the art without making creative efforts all belong to the protection scope of the embodiments of the present invention.
[0043] see figure 1 with Image 6 As shown, a harmonic suppression broadband patch coupler includes a fan-shaped patch layer 101, a top dielectric substrate 102, an electromagnetic bandgap layer 103, a bottom dielectric substrate 104, and a metal formation layer 105 arranged sequentially from top to bottom; The fan-shaped patch layer 101 includes two pairs of fan-shaped patch groups 201 with a large radius and a small radius and a c...
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The invention relates to a harmonic suppression broadband patch coupler and a method of adjusting power-dividing ratio and a method of simultaneously achieving suppression of broadband and second harmonics. According to the structure, the harmonic suppression broadband patch coupler comprises a fan-shaped patch layer, a top layer dielectric substrate, an electromagnetism band-gap layer, a bottom layer dielectric substrate and a metal ground layer, wherein the fan-shaped patch layer, the top layer dielectric substrate, the electromagnetism band-gap layer, the bottom layer dielectric substrate and the metal ground layer are arranged in sequence from top to bottom, the fan-shaped patch layer comprises two fan-shaped patch sets with different radiuses and same central angle of 90 degrees, two fan-shaped patches of each fan-shaped patch set are symmetrical about an origin. An output end opening is arranged between the two fan-shaped patches; the electromagnetism band-gap layer is provided with N*N rectangular good conductor patches arranged in array, and the N is a positive integer which is equal to or bigger than 2; the center, corresponding to the rectangular good conductor patches, of the bottom layer dielectric substrate is provided with metal via holes, the metal via holes penetrate through the bottom layer dielectric substrate, and the metal via holes are connected with the rectangular good conductor patches and the metal ground layer respectively. Output of any one power-dividing ratio of the broadband and the second harmonics suppression function can be simultaneously achieved.
Description
technical field [0001] The invention relates to a coupler used in microwave communication, in particular to a harmonic suppression broadband patch coupler capable of realizing broadband and second harmonic suppression at the same time with arbitrary power division ratio output. Background technique [0002] The coupler is a directional power distribution element, which can distribute the power to the coupling end in different proportions from the forward wave of the main transmission system. Couplers are used in power gain control devices, balanced amplifiers, modulation and demodulation circuits, and feeder networks for phased array radar systems. [0003] The main methods used today to achieve broadband and harmonic suppression are the following: [0004] One is to design a patch-based orthogonal coupler to expand the bandwidth. It consists of four fan-shaped metal patches with a central angle of 90° and an adjustable radius. However, this design cannot suppress the pass...
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IPC IPC(8): H01P5/12H01P1/212
Inventor 郑少勇周新宇李元新
Owner SYSU CMU SHUNDE INT JOINT RES INST