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antenna adapter

An adapter and antenna technology, applied in the direction of antenna, loop antenna, magnetic field size/direction, etc., can solve the problems that are not suitable for unknown or random frequency, increase the noise factor of the receiving channel of the antenna system, etc., and achieve the effect of linear and uniform response

Active Publication Date: 2019-03-12
THALES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aside from the need to include complex components to tune the filter, the drawback of this approach is the insertion loss caused by the added filter
This insertion loss increases the noise factor of the receive channel of the antenna system
[0009] Moreover, in theory, tunable filters only give the possibility of receiving a part of the electromagnetic spectrum
Therefore, this method is not suitable for incident waves with unknown frequencies or random

Method used

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Embodiment Construction

[0032] figure 1 An antenna system 800 is shown in FIG. 1 , comprising, connected in sequence: a dipole or magnetic antenna 830, an antenna adapter 840 and a receive channel 850, the antenna adapter 840 serving as an interface enabling impedance matching between the antenna and the receive channel; Receive channel 850 includes low noise amplifiers, filters, detectors, digitizers, and other signal processing components.

[0033] The antenna adapter 840 includes a housing 802 capable of defining a magnetically isolated area from the outside world and from magnetic disturbances (especially electromagnetic waves). The housing 802 uses suitable materials capable of shielding these external fields.

[0034] The antenna adapter 840 includes the first wire 806 and the magnetoelectric sensor 810 inside the housing 802 .

[0035] The first wire 806 is connected to an antenna 830 . The antenna 830 delivered is called the external current i ext A current flows through the first wire 80...

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Abstract

The invention relates to an antenna adapter (840) for placement between an antenna (830) and a receive channel (850). The antenna adapter (840) includes: a first wire (806) and a magnetoelectric sensor (810), an external current (iext) corresponding to a signal transmitted at the output of the antenna flows through the first wire (806), and the first wire An external magnetic field is created in its vicinity; a magnetoelectric sensor (810) is placed adjacent to the first wire, is sensitive to the flux of the external magnetic field and is capable of generating an output signal corresponding to the external current.

Description

technical field [0001] The present invention relates to the field of radio frequency antenna systems, and more particularly to an adapter for such systems, the adapter being located between the antenna and the receiving circuit. Background technique [0002] Typically, adapters are designed to operate within a limited passband centered at a predefined frequency f. [0003] To this end, the adapter comprises a set or variable capacitors and / or inductors, which give the possibility to operate in a resonator mode of the adapter. [0004] However, in some applications it is desirable for the antenna system to be able to operate within a wider passband. Examples are cases when the frequency of the incident electromagnetic wave on the antenna is unknown, when the frequency of the incident wave is a time-variable frequency, or even when the frequency of the incident wave is given randomly. [0005] For operation over a wide passband, the sensitivity of the antenna system is great...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/18H04B1/52H04B1/54G01R15/20G01R33/04
CPCG01R15/20G01R33/04H04B1/18H04B1/52H04B1/54H01Q7/00
Inventor 埃马纽埃尔·德苏维乐让-保罗·卡斯特拉博多特·德莫特斯-梅纳德
Owner THALES SA