High-stability low-noise GPS (Global Positioning System) active antenna

An active antenna, high stability technology, used in antennas, antenna grounding devices, climate sustainability, etc., to avoid crosstalk, low noise power consumption, and stable process performance.

Active Publication Date: 2012-08-01
HANGZHOU RUIMENG TECH
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  • High-stability low-noise GPS (Global Positioning System) active antenna
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  • High-stability low-noise GPS (Global Positioning System) active antenna

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[0043] The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

[0044] Fig. 2 is a block diagram of the new GPS active antenna of the present invention. The GPS active antenna is composed of a low noise amplifier chip 201 , a radio frequency bandpass filter 202 , and a microstrip patch antenna 203 . The GPS satellite signal is received by the microstrip patch antenna 203 , input to the low noise amplifier chip 201 and output by the radio frequency bandpass filter 202 .

[0045] image 3 The electrical principle block diagram of the new GPS active antenna of the present invention is given. It mainly shows the internal structure of the low-noise amplifier chip: the external input voltage of 2-5 (±10%) V enters the LDO 303 inside the chip, and the LDO generates a 1.8V regulated output, which is drawn out through the chip pins for A stable power supply voltage is pr...

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Abstract

The invention belongs to the technical field of radio frequency communication and provides a high-stability low-noise GPS (Global Positioning System) active antenna for solving the problems of difficulty in miniaturization and high cost of a GPS active antenna in the prior art due to the adoption of discrete components. A circuit composition of the high-stability low-noise GPS active antenna comprises two low-noise amplifiers, a radio frequency band-pass filter, a low-noise LDO (Low Drop Out Regular), a reference source and a microstrip patch antenna. According to the invention, a module comprising the low-noise amplifiers, the reference source and the low-noise LDO is integrated into a low-noise amplifier chip by adopting an integration technology, the integral GPS active antenna is formed by adopting the band-pass filter and a small amount of peripheral circuits, the area of the active antenna is reduced, the cost is saved, the power consumption is reduced and the reliability and stability are improved. The GPS active antenna provided by the invention easily meets the requirement on the miniaturization and is particularly suitable for integrating functional modules of mobile communication products such as a mobile phone, a PDA (Personal Digital Assistant), a vehicle-mounted navigator and the like, into one system.

Description

Background technique [0001] The GPS satellite navigation system can provide position, speed and time information, which can be used to locate, navigate and supervise various targets. It is omnipotent (land, ocean, aviation and aerospace), global, all-weather, continuous and real-time It plays an important role that cannot be replaced by other means in the construction of information, transportation, security and defense, agriculture, fishery, disaster prevention and relief, and environmental monitoring. Its development prospects are very broad, and it has attracted more and more attention in recent years. [0002] The technological progress of miniaturization, high precision and low power consumption of GPS chips or chipsets has effectively promoted the application and expansion of GPS satellite navigation systems in the digital consumer market, and GPS navigation based on platforms such as PDAs, mobile phones, and digital players has emerged Locate the device. However, these...

Claims

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Application Information

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IPC IPC(8): H01Q23/00H01Q1/38H01Q1/48H01Q13/08
CPCY02B60/50
Inventor 段炼甘业兵钱敏马成炎
Owner HANGZHOU RUIMENG TECH
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