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Transmitting/receiving antenna with radiation diversity

A technology for receiving antennas and antennas, which can be applied to antenna arrays, antennas, slot antennas and other directions that are individually powered, and can solve complex, troublesome, difficult and other problems

Inactive Publication Date: 2008-10-22
THOMSON LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This topology is complex and difficult to implement due to the antenna pathways and circuits being arranged in an interleaved manner, and cumbersome

Method used

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  • Transmitting/receiving antenna with radiation diversity
  • Transmitting/receiving antenna with radiation diversity
  • Transmitting/receiving antenna with radiation diversity

Examples

Experimental program
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Effect test

Embodiment Construction

[0021] refer to figure 2 and Fig. 3, a first embodiment of an antenna with radiation diversity according to the present invention will first be described. Such as figure 2 As shown schematically in , the antenna comprises two radiating elements 10 , 11 consisting of annular slots realized in a known manner by etching on a dielectric substrate. In this embodiment, the two annular slots have a diameter equal to kλs, where λs is the wavelength in the slot at the selected frequency. It will be apparent to those skilled in the art that the slots may be polygonal in shape and of various dimensions.

[0022] In this embodiment, the analytical antenna is fed by an electromagnetically coupled source according to the known Knorr method. However, other methods such as tangential feeding of the slots may also be used without departing from the scope of the present invention. More specifically, as figure 2 As shown, the first antenna 10 is powered by a line 22 realized on the side ...

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PUM

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Abstract

The invention concerns a transmitting / receiving antenna with radiation diversity comprising on a substrate at least first and second radiating elements (10, 11) connected via a network of power supply lines to an electromagnetic signal transmitter / receiver circuit, wherein the network consists of a first power supply line (22) connected to a first radiating element (10) and of an assembly of two second power supply lines (24, 25) each connected via a switching element (D1, D2) to the second radiating element (11) so as to supply the two radiating elements in phase or in opposite phase, the assembly of the two second power supply lines being connected to the first power supply line by a third power supply line (25), the first and third power supply lines being connected via a common power supply line to the electromagnetic signal transmitter / receiver circuit.

Description

technical field [0001] The invention relates to a transmit / receive antenna with radiation diversity. Background technique [0002] In the field of wireless networks, the applicant has proposed several solutions to solve the problem of attenuation or significant degradation of signals due to multipath effects. The applicant has thus proposed in French Patent Application No. 0110696 an antenna topology with radiation diversity based on a selectively fed annular slot-type antenna. However, this type of antenna has a directivity of about 3 or 4 dB. However, for WADSL type (Wireless ADSL) applications, significant directivity is necessary. In fact, in such indoor signal transmission / reception, the constraint in terms of system loss is very high due to the penetration effect of the indoor signal, which will generate several dB of attenuation in the signal. In order not to increase the cost of the solution by using an amplifier, improving the directivity of the antenna is a solu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q25/02H01Q13/10H01Q9/04H01Q21/06
CPCH01Q9/0407H01Q25/02H01Q13/10H01Q3/38H01Q21/061
Inventor 尼古拉斯·博伊斯布维尔让-弗朗索瓦·平托斯菲利普·米纳德
Owner THOMSON LICENSING SA