An active inductor that can work in the ku-band

An active inductor, ku-band technology, applied in the field of active inductors, can solve the problems of non-inductive performance, low Q value, and fewer impedance transformations.

Active Publication Date: 2022-08-02
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the existing active inductors have simple circuit components and insufficient coordination of each unit, resulting in fewer impedance transformation times, small inductance values, and low Q values; in addition, the equivalent capacitance is also large, and the operating frequency is low. In the Ku-band In, even non-inductive performance, which limits its application in high-performance radio frequency integrated circuits

Method used

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  • An active inductor that can work in the ku-band
  • An active inductor that can work in the ku-band
  • An active inductor that can work in the ku-band

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Embodiment Construction

[0020] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] figure 1 is an embodiment of the active inductor, comprising: a first Q-enhanced transconductor unit (1), a second Q-enhanced transconductor unit (2), and a first adjustable input unit (3) , the second adjustable input unit (4).

[0022] The specific implementation of the active inductor in this embodiment is:

[0023] The input of the active inductor (RF in ) and the first N-type MOS transistor (M 1 ) gate is connected; the first N-type MOS transistor (M 1 ) source simultaneously with the second N-type MOS transistor (M 2 ) drain, the second N-type MOS transistor (M 2 ) gate, the third N-type MOS transistor (M 3 ) is connected to the drain of the first N-type MOS transistor (M 1 ) drain with V DD connected; the second N-type MOS transistor (M ...

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Abstract

An active inductor capable of operating in a Ku-band, comprising a first Q-enhanced transconductor unit (1), a second Q-enhanced transconductor unit (2), and a first adjustable input unit (3) , the second adjustable input unit (4). Wherein, the first Q-enhanced transconductor unit (1) is connected in series with the first adjustable input unit (3) to form a first-stage impedance transformation circuit, and the second Q-enhanced transconductor unit (2) is connected with the second The adjustable input unit (4) is connected in series to form a second-stage impedance transformation circuit, and the first-stage impedance transformation circuit is cascaded with the second-stage impedance transformation circuit, so that the total equivalent capacitance of the active inductor is reduced, and the number of impedance transformations is increased, Finally, an active inductor with high Q value and large inductance value, which can work in the Ku band, is obtained.

Description

technical field [0001] The invention relates to the field of radio frequency devices and radio frequency integrated circuits, in particular to an active inductor that can work in Ku band. Background technique [0002] In recent years, wireless communication systems have developed rapidly. Ku-band microwave has gradually become the development direction of wireless communication systems such as satellite communication and microwave relay systems due to its wide spectrum range, narrow beam, straight-line propagation, all-weather operation, and high radiation antenna gain. It is required that its functional module / unit will also work in the Ku-band, and the inductor is one of the common components in the module / unit, so it must also work in the Ku-band. [0003] The most commonly used inductive element today is the on-chip passive spiral inductor, constructed with metal wires, whose inductance value (L), quality factor (Q), and resonant frequency (fs) are inherently related to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03H11/48
CPCH03H11/48
Inventor 张万荣徐曙谢红云金冬月张崟杨鑫
Owner BEIJING UNIV OF TECH
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