摘要:
Compact, planar antenna made on a substrate comprising an annular slot which is dimensioned to operate at a given frequency and which is placed in a short-circuit plane of a line via which the antenna slot is fed. A second slot feed line is symmetrically disposed with respect to the first line in the line short-circuit plane common to them. Each of the lines, furnished with a port, is connected to a switching facility so as to allow the feeding of the antenna through one or the other of the two ports.
摘要:
The present invention relates to a device for receiving and/or emitting signals comprising at least two means for receiving and/or emitting electromagnetic waves of the slot antenna type and means for connecting the said receiving and/or emitting means to means for exploiting the signals, the means for receiving and/or emitting electromagnetic waves being symmetric with respect to a point, and the connection means consisting of supply lines coupled electromagnetically to the slots of the slot antennas, which are connected on one side to a common supply line which is in a plane passing through the point of symmetry, and on the other to an electronic component enabling a short circuit or an open circuit to be simulated at the end of one of the lines and an open circuit or a short circuit to be simulated at the end of the other line.
摘要:
A device, applicable to the field of wireless transmission, receives and/or transmits electromagnetic waves with radiation diversity. This device comprises, on a common substrate (3), at least one antenna of the slot type (1) formed by a closed curve, known as a slot antenna, electromagnetically coupled to a first supply line (6), and an antenna radiating parallel to the substrate (2), positioned inside the slot antenna and connected to a second supply line. The first and second supply lines are connected via a switching means to means to exploit the electromagnetic waves.
摘要:
The present invention relates to a device for the reception and/or the transmission of electromagnetic signals comprising at least one means of reception and/or of transmission of electromagnetic signals, consisting of an antenna of the slot type and a feed line coupled electromagnetically with the slot of the antenna so as to connect the means of reception and/or of transmission of electromagnetic signals to means of utilization of the signals, the feed line being coupled electromagnetically with the slot at two points chosen such that the electromagnetic waves exhibit a circular polarization.
摘要:
The present invention relates to a device for receiving and/or transmitting signals comprising an assembly of n means for receiving and/or transmitting waves with longitudinal radiation of the printed slot-antenna type, where n is an integer greater than or equal to one, and an excitation means of the microstrip-line type coupled to at least one slot line. The present invention is characterized in that it comprises a switching device which acts by controlling the coupling between the microstrip line and at least one slot line.
摘要:
The present invention relates to a planar antenna carried by a substrate including a slot (11) consisting of a closed curve dimensioned in order to operate at a given frequency and fed by a feed line (12) positioned so that the slot lies in a short-circuit plane of the feed line. This antenna includes, in parallel on the slot 11, at least one switching means 13 capable of assuming a closed state or an open state so as to modify the operating frequency band of the planar antenna. This antenna is particularly suitable for domestic wireless networks.
摘要:
The invention relates to a planar antenna realised on a substrate comprising a slot of closed form dimensioned to operate at a given frequency in a short-circuit plane of at least one feed-line. The perimeter of the slot being designed such that p=kλs where k is a whole number greater than 1 and λs the guided wavelength in the slot, the antenna comprising at least one first feed-line placed in an open circuit zone of the slot and a second feed-line placed at a distance d=(2n+1)λs/4 from the first line, where n is an integer greater than or equal to zero.
摘要:
The present invention relates to a device for the reception and/or the transmission of electromagnetic signals comprising at least two means of reception and/or of transmission of electromagnetic signals of the slot-fed antenna (11a, 11b, 11c, 11d) type and means of connection for connecting at least one of the said means of reception and/or of transmission to means of utilization of the multibeam signals, in which the means of connection consist of two feed lines (12, 13) connected by a connection element to the utilization means (P), the two lines being coupled electromagnetically with the slots of the slot-fed antennas, each line terminating in a switching element (14, 15) arranged in such a way as to simulate, as a function of a monitoring signal, an open circuit or a short circuit at the extremity of one of the lines and a short circuit or an open circuit at the extremity of the other line so as to obtain different radiation patterns.
摘要:
The present invention relates to a device for the reception and/or the transmission of electromagnetic signals comprising at least one means of reception and/or of transmission of electromagnetic signals, consisting of an antenna of the slot type (12) and a feed line (13) coupled electromagnetically with the slot of the antenna so as to connect the means of reception and/or of transmission of electromagnetic signals to means of utilization of the signals, the feed line being coupled electromagnetically with the slot at two points (A1, A2) chosen such that the electromagnetic waves exhibit a circular polarization
摘要翻译:本发明涉及一种用于接收和/或传输电磁信号的装置,包括至少一种电磁信号的接收和/或传输装置,包括槽型(12)的天线和馈线( 13)与天线的槽电磁耦合,以将电磁信号的接收和/或传输装置连接到利用信号的装置,馈电线在两点(A 1, A 2),使得电磁波呈现圆偏振
摘要:
The present invention relates to an electromagnetic wave transmission/reception source for a multireflector antenna of the Cassegrain type comprising longitudinal-radiation means operating in a first frequency band and an array of n radiating elements of the travelling-wave type operating in a second frequency band with the n radiating elements arranged symmetrically around the longitudinal-radiation means, the array and the longitudinal-radiation means having an approximately common phase centre, the array of n radiating elements being excited by a waveguide of polygonal cross section. The invention applies especially in satellite communication systems operating in the C-, Ku- or Ka-bands.