CN-224233654-U - Low-noise amplifier, GNSS performance dynamic adjustment system and electronic equipment

Abstract

The application discloses a low-noise amplifier, a GNSS performance dynamic adjustment system and electronic equipment. The low noise amplifier comprises a bias module and an operational amplifier, wherein the bias module is connected with an enabling port and a power supply port of the low noise amplifier, and is configured to control the working state of the operational amplifier according to a level signal received from the enabling port so as to change the gain parameter of the low noise amplifier. The low noise amplifier in the application can control the working state of the bias module by using the enabling signal, indirectly controls the working state of the operational amplifier, adjusts the output signal of the operational amplifier in the working process of the low noise amplifier, thereby realizing the adjustment of the working state of the low noise amplifier to change the overall gain of the low noise amplifier, and further maintains the overall performance and function of the GNSS link by adjusting the working state of the low noise amplifier when the low noise amplifier is applied to the GNSS link.

Inventors

• XIE XIANJIN
• WANG BIN

Assignees

• 合肥移瑞通信技术有限公司

Dates

Publication Date

20260512

Application Date

20250418

Claims (10)

1. 1. A low noise amplifier, wherein the low noise amplifier comprises a bias module and an operational amplifier, and the bias module is connected with an enabling port and a power supply port of the low noise amplifier; The bias module is configured to control an operating state of the operational amplifier according to a level signal received from the enable port to change a gain parameter of the low noise amplifier.
2. 2. The low noise amplifier of claim 1, wherein a first input of the bias module is connected to the enable port and a second input of the bias module is connected to the supply port.
3. 3. The low noise amplifier of claim 1, wherein a first output of the bias module is connected to an inverting input of the operational amplifier and a second output of the bias module is connected to a bypass module; the first end of the bypass module is connected with the non-inverting input end of the operational amplifier, and the second end of the bypass module is connected with the output end of the operational amplifier.
4. 4. A low noise amplifier according to claim 3, wherein the bypass module comprises an on-off element and a bypass capacitor, the on-off element and the bypass capacitor being in series relationship, the second output of the bias module being connected to the on-off element; the on-off element is configured to be controlled by the bias module to realize switching of the on-off state of the bypass module according to the level signal at the enabling port.
5. 5. The low noise amplifier of any of claims 1-4, wherein the non-inverting input of the operational amplifier is connected to the radio frequency input port of the low noise amplifier through a first capacitor, the output of the operational amplifier is connected to the radio frequency output port of the low noise amplifier through a second capacitor, and the power supply of the operational amplifier is connected to the power supply port of the low noise amplifier.
6. 6. A GNSS performance dynamic adjustment system, characterized in that it comprises one or more low noise amplifiers according to any of the claims 1-5, a micro control chip and a GNSS control chip, said micro control chip being connected to the enabling port of said low noise amplifier through a first control port; the GNSS control chip is configured to control the micro control chip to output an enable signal to an enable port of the low noise amplifier and to receive a radio frequency signal transmitted by the low noise amplifier.
7. 7. The system of claim 6, wherein the GNSS control chip is further provided with a second control port, the second control port being correspondingly connected to the first control port of the micro control chip; and the GNSS control chip sends a control signal to a first control port of the micro control chip through the second control port so as to control the micro control chip to output an enabling signal to an enabling port of the low noise amplifier.
8. 8. The system of claim 6, further comprising an antenna and at least two filters connected in series between the antenna and the low noise amplifier, or between two adjacent low noise amplifiers, or between the low noise amplifier and the GNSS control chip.
9. 9. The system of claim 8, wherein a first end of the filter is connected to the antenna or the radio frequency output port of the low noise amplifier and a second end of the filter is connected to the radio frequency input port of the low noise amplifier or the signal receiving port of the GNSS control chip.
10. 10. An electronic device comprising a low noise amplifier according to any of claims 1-5 or comprising a GNSS performance dynamic adjustment system according to any of claims 6-9.

Description

Low-noise amplifier, GNSS performance dynamic adjustment system and electronic equipment Technical Field The application relates to the technical field of electronic communication, in particular to a low-noise amplifier, a GNSS performance dynamic adjustment system and electronic equipment. Background The application of satellite positioning functions owned by electronic devices is becoming more widespread, and in GNSS links, the overall performance of a hardware scheme architecture employing a low noise amplifier is greatly affected by the performance of the low noise amplifier itself. However, in the related art, since the gain performance of the low noise amplifier is relatively fixed, when the GNSS link is in a signal loss or overload saturation condition, the GNSS link as a whole can not be easily and quickly corrected and adjusted at the first time, thereby resulting in the degradation of the overall performance and functions of the GNSS link. Disclosure of utility model The application provides a low-noise amplifier, a GNSS performance dynamic adjustment system and electronic equipment. The low-noise amplifier comprises a bias module and an operational amplifier, wherein the bias module is connected with an enabling port and a power supply port of the low-noise amplifier; The bias module is configured to control an operating state of the operational amplifier according to a level signal received from the enable port to change a gain parameter of the low noise amplifier. Therefore, the low noise amplifier in the application can control the working state of the bias module by using the enabling signal, indirectly controls the working state of the operational amplifier, adjusts the output signal of the operational amplifier in the working process of the low noise amplifier, thereby realizing the adjustment of the working state of the low noise amplifier so as to change the overall gain of the low noise amplifier, and further maintains the overall performance and function of the GNSS link by adjusting the working state of the low noise amplifier when the low noise amplifier is applied to the GNSS link. In some embodiments, a first input of the bias module is connected to the enable port and a second input of the bias module is connected to the power supply port. In some embodiments, a first output of the bias module is connected to an inverting input of the operational amplifier, and a second output of the bias module is connected to a bypass module; the first end of the bypass module is connected with the non-inverting input end of the operational amplifier, and the second end of the bypass module is connected with the output end of the operational amplifier. In some embodiments, the bypass module comprises an on-off element and a bypass capacitor, the on-off element and the bypass capacitor are in series connection, and a second output end of the bias module is connected with the on-off element; the on-off element is configured to be controlled by the bias module to realize switching of the on-off state of the bypass module according to the level signal at the enabling port. In some embodiments, the non-inverting input terminal of the operational amplifier is connected to the radio frequency input port of the low noise amplifier through a first capacitor, the output terminal of the operational amplifier is connected to the radio frequency output port of the low noise amplifier through a second capacitor, and the power supply terminal of the operational amplifier is connected to the power supply port of the low noise amplifier. The performance dynamic adjustment system in the embodiment of the application comprises one or more low noise amplifiers, a micro control chip and a GNSS control chip, wherein the micro control chip is connected with an enabling port of the low noise amplifier through a first control port; the GNSS control chip is configured to control the micro control chip to output an enable signal to an enable port of the low noise amplifier and to receive a radio frequency signal transmitted by the low noise amplifier. In some embodiments, the GNSS control chip is further provided with a second control port, and the second control port is correspondingly connected with the first control port of the micro control chip; and the GNSS control chip sends a control signal to a first control port of the micro control chip through the second control port so as to control the micro control chip to output an enabling signal to an enabling port of the low noise amplifier. In some embodiments, the system further comprises an antenna and at least two filters connected in series between the antenna and the low noise amplifier, or between two adjacent low noise amplifiers, or between the low noise amplifier and the GNSS control chip. In some embodiments, a first end of the filter is connected to the antenna or the radio frequency output port of the low noise amplifier, and a second end of the filter is co