Miniature power divider based on high Q-value tunable active inductor

A technology of active inductance and power divider, which is applied in the direction of impedance matching network, multi-terminal pair network, etc., and can solve the problems of non-tunable inductance value, difficult miniaturized power divider application requirements, large chip area, etc.
CN108768341AActive Publication Date: 2018-11-06灵量(苏州)科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
灵量(苏州)科技有限公司
Publication Date
2018-11-06

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Abstract

The present invention discloses a miniature power divider based on a high Q-value tunable active inductor. The power divider comprises an input port (P1), a capacitive unit, a first active inductor, asecond active inductor, an isolation resistor, a first output port (P2) and a second output port (P3). The first active inductor and the second active inductor have the identical structures which areimplemented based on the gyrator theory, and each is formed by a positive transconductance amplifier, a negative transconductance amplifier, a Cascode current mirror structure forming a feedback loopand a dual external voltage biasing circuit. Compared to a traditional passive power divider, the novel power divider employs the active inductor to replace the passive spiral inductor to achieve high quality factor (Q value), a tunable high work frequency range and a tunable inductive value so as to greatly reduce the chip area while the power consumption is not greatly increased, weaken the substrate parasitic effect influence and achieve miniaturization, low-insertion power consumption and high isolation performance.
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Description

technical field

[0001] The invention relates to the field of radio frequency integrated circuit design, in particular to a miniature power divider based on a high-Q tunable active inductance. Background technique

[0002] At present, the design of miniaturized radio frequency integrated circuits has very important theoretical and practical significance for the realization of implantable biomedical devices (such as wireless capsule endoscopes) or emerging wearable devices that work in the human body.

[0003] In the design of miniaturized radio frequency integrated circuits, the power divider is a key component of radio frequency circuits such as mixers, phase shifters, and power amplifiers. It is a part of dividing the input signal into several equal or unequal power output signals. A multi-port network device, its performance directly affects the energy distribution and synthesis efficiency of the entire system. In order to meet the increasing distribution requirements of ...

Claims

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