A low-noise amplifier for radio communication and navigation receiver and its realization method

A technology of low-noise amplifier and navigation receiver, which is applied to amplifiers, amplifiers, high-frequency amplifiers, etc. with semiconductor devices/discharge tubes, and can solve the problems of low gain-to-power consumption ratio and large power consumption.

Inactive Publication Date: 2008-03-26
BEIHANG UNIV
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Problems solved by technology

[0004] Common low-noise amplifiers bias the common-source transistors in the strong inversion region, which will get a lot of gain, but it will also bring a lot of power consumption, resulting in a low gain-to-power ratio
In addition, common LNAs are either noise-matched or power-gain-matched at the input stage, and the two can only be one of them.
Therefore, the gain-to-power ratio of the current low-noise amplifier can only reach about 10dB / mW.

Method used

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  • A low-noise amplifier for radio communication and navigation receiver and its realization method
  • A low-noise amplifier for radio communication and navigation receiver and its realization method
  • A low-noise amplifier for radio communication and navigation receiver and its realization method

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Embodiment Construction

[0040]The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0041] The invention discloses a low-noise amplifier for wireless communication and navigation receivers and its implementation method. The power supply used is a low-voltage power supply, and a capacitor hybrid network is connected in parallel between the gate and source of common-source transistors, Simultaneous matching of input noise and power gain is achieved, and through the adjustment of the set value of the low-voltage power supply and capacitor hybrid network and the selection of source degenerate inductance and series inductance, the low-noise amplifier proposed by the present invention has a high High power gain, low noise figure and high gain-to-power ratio can reduce the battery capacity requirements of wireless communication systems and navigation system receivers.

[0042] A kind of high gain-power consumption ratio low noise amplifier for wirel...

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Abstract

This invention discloses a low noise amplifier used in radio communication and pilot receivers and a realization method, which offsets transistors of common-source and common-grating on a middle inversion region, in which, the supply used is a low-voltage one, a capacitance parallel series array is parallel between the grating and the source of a common-source transistor, and power loss of the noise amplifier is reduced greatly, the ratio of gain-power loss is increased reaching to 20dB/mW to realize match of noise and power gain and reduce requirement to cell volumes by receivers of the radio communication system and pilot system by adjusting set values of the low voltage source and the capacitance parallel-series array and selection of parallel and serial inductors.

Description

technical field [0001] The invention belongs to the fields of wireless communication and navigation, and relates to a low-noise amplifier and a realization method, and particularly designs a low-noise amplifier and a realization method for wireless communication and navigation receivers. Background technique [0002] Low noise amplifiers are key modules in the RF front-end of receivers in wireless communication systems and navigation systems. The low-noise amplifier amplifies the radio frequency signal as much as possible on the premise of reducing the deterioration of the signal-to-noise ratio as much as possible, so as to reduce the noise introduced by the subsequent module. Nowadays, in order to make the wireless communication system and navigation system receiver smaller and more portable, batteries are usually used to power the receiver circuit, which puts forward high requirements on the power consumption of the circuit. For low noise amplifiers, it is necessary to pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/26H03F3/189H03F3/193
CPCY02B60/50
Inventor 张晓林夏温博张展宋丹
Owner BEIHANG UNIV
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