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Multidigit digitally controlled attenuator with low additional phase shift

A digitally controlled attenuator and phase shift technology, which is applied to frequency-independent attenuators, multi-terminal pair networks, networks using active components, etc., can solve the problem of not meeting the system requirements well, the attenuator has a large additional phase shift, etc. problem, to achieve the effect of improving the additional phase shift index, ingenious structural design, and fewer components

Inactive Publication Date: 2017-02-15
吴韵秋 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a low additional phase shift multi-digit digital control attenuator, which can overcome the deficiencies of the prior art and solve the problem that the attenuator has a large additional phase shift and cannot better meet the system requirements in the prior art

Method used

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  • Multidigit digitally controlled attenuator with low additional phase shift
  • Multidigit digitally controlled attenuator with low additional phase shift
  • Multidigit digitally controlled attenuator with low additional phase shift

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Embodiment Construction

[0023] 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 making creative efforts belong to the protection scope of the present invention.

[0024] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] The embodiment of the present invention provides a low additional phase shift multi-digital digital control attenuator, which includes multiple attenuation bit circuit structures, and the multiple attenuatio...

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Abstract

The invention provides a multidigit digitally controlled attenuator with low additional phase shift, phases of an attenuation state and a reference state of an attenuator are tuned by setting serially connected tuning capacitors and resistors connected with the tuning capacitors, in combination with specific circuit structure of a pi-shaped structure, T-shaped structure and a bridge T-shaped structure, in case of maintaining reasonability of parameters such as flatness and attenuation accuracy, so that a phase difference of the attenuation state and the reference state is reduced as much as possible, and thus an additional phase shift index of the attenuator is effectively improved, and the attenuator is ingenious in structural design, less in used elements, small in size after molding, accordant with actual requirements, and very high in use value and promotional value.

Description

technical field [0001] The invention relates to an attenuator, in particular to a multi-bit digitally controlled attenuator with low additional phase shift. Background technique [0002] An attenuator is an electronic component that provides attenuation and is widely used in electronic equipment. Its main purpose is: to adjust the signal size in the circuit; in the comparison method measurement circuit, it can be used to directly read the attenuation value of the network under test ; Improving impedance matching, if some circuits require a relatively stable load impedance, an attenuator can be inserted between this circuit and the actual load impedance to buffer impedance changes. [0003] The phased array system is an array composed of a group of antennas. The relative phases of the signals sent to each antenna are properly adjusted to strengthen the signal strength in the specified direction and suppress the strength in other directions. [0004] Among them, the multi-bit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H11/24
CPCH03H11/245
Inventor 伍晶熊翼通张林
Owner 吴韵秋
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