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Active inductor capable of working at Ku waveband

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: 2019-03-08
BEIJING UNIV OF TECH
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  • Summary
  • 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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  • Active inductor capable of working at Ku waveband
  • Active inductor capable of working at Ku waveband
  • Active inductor capable of working at Ku waveband

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Embodiment Construction

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

[0021] figure 1 It is an embodiment of the active inductor, including: 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 manner of active inductance in this embodiment is:

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

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Abstract

The invention discloses an active inductor capable of working at a Ku waveband. The inductor includes a first Q-enhanced transconductor unit (1), a second Q-enhanced transconductor unit (2), a first adjustable input unit (3) and a second adjustable input unit (4). The first Q-enhanced transconductor unit (1) is connected in series with the first adjustable input unit (3) to form a first-stage impedance conversion circuit. The second Q-enhanced transconductor unit (2) is connected in series with the second adjustable input unit (4) to form a second-stage impedance conversion circuit. The first-stage impedance conversion circuit is cascaded with the second-stage impedance conversion circuit. Total equivalent capacitance of the active inductor is enabled to be reduced, impedance conversion frequency is increased, and finally, the active inductor which has a high Q value and a large inductance value and is capable of working at the Ku waveband 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 because of its wide spectrum range, narrow beam, straight-line propagation, all-weather work, and high gain of radiation antennas. It is required that its functional modules / units will also work in the Ku-band, and inductors, as one of the commonly used components in the modules / units, must also work in the Ku-band. [0003] The inductive element commonly used today is the on-chip passive spiral inductor, which is constructed with metal wires, and its inductance (L), quality factor (Q), and resonant frequency (fs) have an inherent rel...

Claims

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Application Information

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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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