Integrated circuit for realizing broadband coupling
A technology of integrated circuits and coupling capacitors, applied in the electronic field, can solve problems such as increasing coupling strength and affecting system performance, achieving the effect of broadband coupling and increasing coupling bandwidth
Inactive Publication Date: 2017-01-11
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology
[0002] The main function of the coupler is to distribute power according to a certain proportional relationship. It is widely used in the field of electronic communication. The common coupler structure is as follows: figure 1 As shown, it is a four-port network, port 1 is the input end, port 2 is the output end, port 3 is the coupling end, and port 4 is the terminal port connected to 50 ohms. Most of the coupler structures in the prior art can meet the narrowband requirements , however, as the frequency increases, the coupling strength of the coupler becomes larger, and the coupling strength at high frequency and low frequency may differ by less than 10dB, which affects the performance of the system
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[0025] 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.
[0026] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
[0028] refer to figure 2 , an integrated circuit that implements broadband coupling, including,
[0029] The ...
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The invention relates to the technical field of electronics, and particularly relates to an integrated circuit. The integrated circuit for realizing broadband coupling comprises a first transmission branch, a second transmission branch, a third transmission branch, and a fourth transmission branch, wherein the first transmission branch is connected between an input end and a first intersection node; the second transmission branch is connected between the first intersection node and an output end; the third transmission branch is connected between a coupling end and a second intersection node; the fourth transmission branch is connected between the second intersection node and a terminal; a coupling device is connected between the first intersection node and the second intersection node; and a grounding capacitor is connected between the coupling end and the grounding end, and the grounding capacitor serves as a load at the coupling end for forming mismatch at the coupling end to increase the coupling bandwidth, and the purpose of broadband coupling is realized.
Description
technical field [0001] The invention relates to the field of electronic technology, in particular to an integrated circuit. Background technique [0002] The main function of the coupler is to distribute power according to a certain proportional relationship. It is widely used in the field of electronic communication. The common coupler structure is as follows: figure 1 As shown, it is a four-port network, port 1 is the input end, port 2 is the output end, port 3 is the coupling end, and port 4 is the terminal port connected to 50 ohms. Most of the coupler structures in the prior art can meet the narrowband requirements However, as the frequency increases, the coupling strength of the coupler becomes larger, and the coupling strength between high frequency and low frequency may differ by less than 10dB, which affects the performance of the system. Contents of the invention [0003] The object of the present invention is to provide an integrated circuit for realizing broad...
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Inventor 顾新桃赵国涛吴振川赵强黄文韬
Owner SPREADTRUM COMM (SHANGHAI) CO LTD