摘要:
The invention relates to an improved extension device for a DVB-T-receiver characteristed in that it comprises an indoor-repeater enabling the received an/or digitised signals supplied to be emitted or are emitted in a non-converted manner via an antenna device associated with the repeater or arranged in the repeater or connected thereto.
摘要:
Disclosed is an integrated antenna array comprising a plurality of interleaved sub-arrays separately controllable and responding to either the same or separate frequency bands. Both arrays operate with substantially the same phase center and substantially within the same effective aperture. The first sub-array of array comprises of spaced linear radiating elements such as dipoles, log-periodic, Yagi, slotted-waveguide, patch, or array consisting of the same or different elements as used in the first sub-array, either on the same or an entirely different frequency band. Independent beam shaping systems are shown for independent operation of the two arrays.
摘要:
An improved connecting device produces an electrical connection between two antenna element arrangements which are offset with respect to one another. The connecting device has a housing arrangement which forms an outer conductor. The housing arrangement has a base, circumferential side wall sections with two opposite longitudinal side walls, and preferably two transverse side walls, which are provided opposite one another at the ends. An inner conductor holder is provided in the holding area which is formed by the circumferential side wall sections. An inner conductor is inserted into the inner conductor holder. The inner conductor is electrically conductively separated and/or isolated from the housing arrangement and/or from the inner conductor holder.
摘要:
An improved radio frequency diplexer has resonators which are associated either with the transmission path or with the reception path, and at least two additional resonators are also provided. The at least two additionally provided resonators form an interconnection resonator pair which are strongly coupled to one another. Both the transmission path and the reception path are coupled to the second additional resonator, or both the transmission path and the reception path are coupled to the first additional resonator which is provided for inputting to/outputting from the common signal path.
摘要:
An improved dual-polarized antenna arrangement has four antenna element devices each with a conductive structure between opposite antenna element ends. Those antenna element ends of two adjacent antenna element devices adjacent to one another are, in each case, isolated from one another for radio frequency purposes. Those antenna element ends of two adjacent antenna element devices located adjacent to one another in pairs form feed points, and the antenna element devices are fed at least approximately in phase and approximately symmetrically between the respective opposite feed points.
摘要:
An improved antenna is distinguished inter alia by the following features: a coupling element (21) which is in the form of a rod, is electrically conductive and extends transversely with respect to the reflector plane is provided on the front face (3b) of the reflector (3), the mount device (15) has an axial hole (15a) in the interior, the axial hole (15a) in the mount device (15) can be placed on the coupling element (21) which is in the form of a rod, such that the mount device (15) and the coupling element (21) which is the form of a rod are capacitively coupled, while avoiding any electrically conductive contact.
摘要:
An improved mobile radio antenna arrangement for a base station is distinguished by the following features: a pivoting shaft or pivoting device (21) which runs in the longitudinal direction and/or in the vertical direction is provided within the radome (3), the reflector (13) is at least indirectly held and mounted on the pivoting device or pivoting shaft (21), the interior (3′) of the radome (3) has dimensions such that the reflector (13), which is located within the radome (3), and the antenna elements (15) which are provided can be pivoted in the azimuth direction relative to the radome (3) via the pivoting device or pivoting shaft (21) which is located within the radome (3).
摘要:
A broadband omnidirectional antenna includes an antenna element projecting from a base plate or counterweight surface. The antenna element has an outer surface which extends away from the base plate. The base plate has a recess in the area of which the foot point of the antenna element (which is in the form of a monopole) is arranged such that it is electrically conductively isolated from the base plate or from the counterweight surface. The antenna element is fed by means of a series or capacitive inner conductor line coupling.
摘要:
Systems and methods providing analysis of channel characteristics for determining a optimum beam configuration for use therein are shown. Preferably, the direction and angle spread for subscriber units are determined in order to provide a beam for use therewith. According to a preferred embodiment, forward link characteristics are emulated in the reverse link in order to identify an optimum beam configuration. This optimum beam configuration is then preferably adapted for use in the forward link. Preferably, the present invention operates to recognize subscriber units which are spatially separated such that the optimized beams may be utilized in providing simultaneous communications therewith.
摘要:
An improved circuit for splitting or for joining radio-frequency powers, having a main line (7) which is connected between an input port (1) and a first output port (3), and having a branch line (11) which branches off from the main line at a branching point (9) and leads to a second output port (5), is distinguished in that a compensating element (61) is provided which, in particular, is adjustable or can be fitted and removed differently, and which can be varied, varying the capacitance of at least one capacitor (C1, C2, C3) which is connected in the branch line (11), and/or varying the electrical length of a spur line (37) which is coupled to the branch line (11), such that the change in the magnitude of the power which is tapped off also makes it possible to compensate at the same time for the resistance change which is caused by the change in the power split.