Broadband low-power-consumption and low-noise amplifier applied to wireless sensor network

A low-noise amplifier and wireless sensor technology, applied to amplifiers with field effect devices, amplifiers with only semiconductor devices, amplifiers with semiconductor devices/discharge tubes, etc., can solve the problem of increasing overall circuit power consumption and noise figure , Increase the overall circuit layout area and other issues, to achieve the effect of reducing power consumption, realizing broadband input impedance matching, and low power consumption

Pending Publication Date: 2017-08-18
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to obtain high gain, people will use multi-stage amplifier cascading, such as figure 1 shown, but tends to increase overall circuit power dissipation and noise figure
In order to achieve low noise, people usually use a cross-coupled differential structure, such as figure 2 As shown, differential input and differential output require additional baluns and coupling capacitors, which will increase the layout area of ​​the overall circuit

Method used

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  • Broadband low-power-consumption and low-noise amplifier applied to wireless sensor network
  • Broadband low-power-consumption and low-noise amplifier applied to wireless sensor network
  • Broadband low-power-consumption and low-noise amplifier applied to wireless sensor network

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Embodiment Construction

[0035] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] Refer to attached image 3 , a broadband low-power low-noise amplifier applied to a wireless sensor network in this embodiment, which includes an input matching circuit, a first-stage amplifying circuit, and a second-stage amplifying circuit connected in sequence.

[0037] The input matching circuit consists of capacitor C in and inductance L in , capacitance C in One end of the ground and the other end with the inductor L in connected at one end of the L in The other end is connected with the gate of PMOS transistor MP, the gate of NMOS transistor MN and the feedback resistor R f connected at the other end. Inductance L in One end of is the input end of a b...

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Abstract

The invention discloses a broadband low-power-consumption and low-noise amplifier applied to a wireless sensor network. The amplifier comprises an input matching circuit, a first-level amplifier circuit and a second-level amplifier circuit which are connected in sequence. The first-level amplifier circuit is a resistor feedback common source circuit structure. The second-level amplifier circuit is an active parallel feedback common gate circuit structure.

Description

technical field [0001] The invention belongs to the field of analog integrated circuit design, and in particular relates to a broadband low-power consumption low-noise amplifier applied to a wireless sensor network. Background technique [0002] Low noise amplifiers are widely used in communications, radar, telemetry and remote control, and various high-precision measurement systems. The low-noise amplifier is a key component at the front end of the radio frequency receiver. Its main function is to amplify the weak radio frequency signal received by the antenna from the air, while only introducing relatively small noise. As the first-stage active module of the receiver, the performance of the low-noise amplifier plays a decisive role in the performance of the entire receiver system. It is very difficult to design a low-noise amplifier with high gain, low power consumption, and moderate linearity, and there is usually a trade-off between these properties. Therefore, designi...

Claims

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Application Information

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IPC IPC(8): H03F3/45H03F3/16H03F1/56H03F1/42H03F1/02
CPCH03F1/0205H03F1/42H03F1/565H03F3/165H03F3/45H03F3/45179Y02D30/70
Inventor 吴晨健安景慧
Owner SUZHOU UNIV
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