Harmonic suppression broadband patch coupler and method for adjusting power division ratio, and method for realizing broadband and second harmonic suppression at the same time
A harmonic suppression and coupler technology, applied in the field of couplers, to achieve the effects of wide relative bandwidth, simple structure and increased size
Active Publication Date: 2018-06-19
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 and Figure 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 for adjusting the power ratio, and a method for simultaneously realizing broadband and second harmonic suppression. Its structure includes fan-shaped patch layers arranged in sequence from top to bottom, The top dielectric substrate, the electromagnetic bandgap layer, the bottom dielectric substrate, and the metal formation; the fan-shaped patch layer includes two pairs of fan-shaped patch groups with one large radius and one small radius and a central angle of 90 degrees. Each pair of fan-shaped patches The two fan-shaped patches of the group are symmetrical about the origin. An output port is provided between two adjacent fan-shaped patches; the electromagnetic bandgap layer array is arranged with N*N rectangular good conductor patches, and N is a positive integer greater than or equal to 2; the bottom dielectric substrate corresponds to a rectangular good conductor patch. A metal via hole is provided in the center of the conductor patch, and the metal via hole penetrates the bottom dielectric substrate and is respectively connected with the rectangular good conductor patch and the metal ground layer. The invention can simultaneously realize the output of any centimeter ratio of the broadband and the second harmonic suppression function.
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