Abstract: A monopole type antenna suitable for operating in cellular frequency bands, the antenna comprising: a conductive surface forming a radiating element and including an electrical connection zone; a compact conductive counterpoise including a connection zone; and a feed line comprising an antenna cable connected to the connection zones of said radiating element and of said compact counterpoise. In the antenna, said radiating element is in the form of an open loop having two branches both connected to the antenna cable and defining first and second radiating portions, each of the radiating portions is suitable for entering into resonance at at least one cellular frequency and extends in a main direction; and these two main directions are substantially parallel so as to operate parasitically and with coupling between the two radiating portions.

Abstract: The present invention provides a very small volume and broad band antenna for a portable appliance including a transceiver module with an independent ground and an antenna feed conductor, the antenna comprising a first conductive surface lying substantially in a first geometrical surface of non-closed curvilinear shape surrounding an inside space and connectable to the independent ground of the transceiver module of the appliance; and a second conductive surface disposed substantially in a second geometrical surface substantially coinciding with the first geometrical surface and situated in the inside space, and forming a radiating assembly connectable to the antenna feed conductor; whereby the antenna is semi-independent of the elements of the appliance.

Abstract: An internal antenna of small volume comprising: a conductive ground plane; a first conductive surface placed in an antenna plane substantially parallel to the ground plane and partially surrounding a portion of the antenna plane, and presenting first and second ends; a second conductive surface forming a main radiating assembly disposed essentially in said portion of the antenna plane, said two conductive surfaces not being connected together by any conductive electrical connection; an antenna conductor connected to said second conductive surface; first electrical connection means for connecting a first end of the first conductive surface to a first zone of the ground plane; and second electrical connection means for connecting said first surface at least in the vicinity of the second end of the first conductive surface to a second zone of the ground plane that is distinct from the first zone; the assembly constituted by said first conductive surface, the portion of the ground plane electrically interconne

Abstract: An internal antenna of small volume comprising: a conductive ground plane; a first conductive surface placed in an antenna plane substantially parallel to the ground plane and partially surrounding a portion of the antenna plane, and presenting first and second ends; a second conductive surface forming a main radiating assembly disposed essentially in said portion of the antenna plane, said two conductive surfaces not being connected together by any conductive electrical connection; an antenna conductor connected to said second conductive surface; first electrical connection means for connecting a first end of the first conductive surface to a first zone of the ground plane; and second electrical connection means for connecting said first surface at least in the vicinity of the second end of the first conductive surface to a second zone of the ground plane that is distinct from the first zone; the assembly constituted by said first conductive surface, the portion of the ground plane electrically interconnecti

Abstract: The invention relates to an antenna of small dimensions. According to an embodiment, the antenna comprises: a radiating element in the form of a plate; an antenna feed connected to the radiating element; a conductive surface substantially parallel to the radiating element and placed at a distance e from the element, the conductive surface being provided with at least one slot facing the radiating element; and a conductive connection between the conductive surface and the radiating element.

Abstract: The invention provides an elongate antenna having a radiating portion constituted by an elongate conductor element. The elongate element is machined to include: N dipoles (where N is an integer not less than 2) made up of N rectilinear sections of said element in alignment; and N?1 phase-shifter elements, each phase-shifter element being interposed between two consecutive dipoles, each phase-shifter element having a section of the elongate conductor element folded into a U-shape and having branches which are substantially juxtaposed and which extend in a direction that is orthogonal to the common direction of the dipoles.

Abstract: The invention relates to a patch type antenna comprising:

Abstract: The invention provides a mobile radiotelephone comprising a casing, a printed circuit card placed inside the casing (30), and an antenna constituted by a radiating conductive element (44) and by a ground plane (50). The radiotelephone is characterized in that the radiating conductive element (44) is disposed outside the casing (30), is mechanically connected thereto, and extends substantially parallel to the printed circuit card. The printed circuit card (42) carries means forming a ground plane (50). The distance h between the radiating conductive element (44) and the printed circuit card (42) lies in the range 7 mm to 15 mm. The radiating conductive element is embedded in an insulating piece (44) mechanically connected to the housing and presenting sufficient mechanical strength to constitute a fastener system for the radiotelephone.

Abstract: The present invention provides a very small volume and broad band antenna for a portable appliance including a transceiver module with an independent ground and an antenna feed conductor, the antenna comprising a first conductive surface lying substantially in a first geometrical surface of non-closed curvilinear shape surrounding an inside space and connectable to the independent ground of the transceiver module of the appliance; and a second conductive surface disposed substantially in a second geometrical surface substantially coinciding with the first geometrical surface and situated in the inside space, and forming a radiating assembly connectable to the antenna feed conductor; whereby the antenna is semi-independent of the elements of the appliance.

Abstract: The invention relates to an antenna of small dimensions.

Abstract: The invention provides an elongate antenna.