An active antenna detection device and detection method thereof

Abstract

The invention discloses an active antenna detection device. The active antenna detection device comprises an active antenna, a biasing circuit, a first comparator, a second comparator and a logic output circuit, wherein the logic output circuit is used for receiving output signals of the first and second comparators to obtain detection results, outputting the detection results, and meanwhile, outputting a feedback signal to the biasing circuit; the active antenna is connected with the input end of the first comparator, the input end of the second comparator and the output end of the biasing circuit, the output end of the first comparator and the output end of the second comparator are connected to the input end of the logic output circuit, and the output end of the logic output circuit isconnected to the biasing circuit. By means of the active antenna detection device, detection of the state of the active antenna can be achieved without affecting the performance of the antenna, and the device has a current-limiting function. The invention further discloses a detection method of the detection device.

Description

technical field [0001] The present invention relates to a detection device, more specifically, to an active antenna detection device; the present invention also relates to a detection method of the active antenna detection device. Background technique [0002] With the popularization of navigation applications, the development of satellite navigation receivers is becoming more and more mature. Due to the weak signal of navigation satellites, the performance and stability requirements of receivers are getting higher and higher. Active antennas are used to increase the signal signal-to-noise ratio to improve receiver performance. In order to avoid the risk of antenna short circuit, it is necessary to detect whether the antenna has a short circuit or an open circuit, and limit the current when a short circuit occurs to avoid burning the device. General detection often uses detection tools such as multimeters to measure whether the connection between the antenna and the input t...

AI Technical Summary

Problems solved by technology

It is very cumbersome to use tools for detection

Another way to detect the antenna is to use the current detection IC chip to detect the current of the antenna. This detection method is relatively expensive, and may have a certain impact on the performance of the antenna, resulting in signal attenuation.

Images