Abstract: Integrated circuit including a mixer circuit, which has a first circuit section, a second circuit section, and a transformer. The first circuit section has two radiofrequency terminals. The second circuit section has two reference oscillator terminals, an active mixer unit with a signal-amplifying unit, and two intermediate frequency terminals. The active mixer unit and the signal-amplifying unit have a common current path. The transformer directly electrically decouples the two radiofrequency terminals from the active mixer unit, and couples the first circuit section and the second circuit section together such that each of the two circuit sections is separately supplied with a full operating voltage of the integrated circuit. The integrated circuit may additionally include a second transformer connected between the active mixer unit and the two intermediate frequency terminals.

Abstract: A dual polarized antenna with at least one dual polarized radiator device comprises a reflector (3) and longitudinal or transverse webs (9, 11) provided at least on its longitudinal side and/or on its transverse side. The improvement is distinguished by the following features: at least one longitudinal web (9) and/or at least two longitudinal webs (9) provided with respect to the radiator device (1, 1?) located in between and/or at least one transverse web (11) and/or at least two transverse webs (11) provided with respect to the radiator device (1, 1?) located in between are positionally changeable directly or at least indirectly by pivoting and/or bending and/or deforming and curving.

Abstract: Integrated circuit including a mixer circuit, which has a first circuit section, a second circuit section, and a transformer. The first circuit section has two radiofrequency terminals. The second circuit section has two reference oscillator terminals, an active mixer unit with a signal-amplifying unit, and two intermediate frequency terminals. The active mixer unit and the signal-amplifying unit have a common current path. The transformer directly electrically decouples the two radiofrequency terminals from the active mixer unit, and couples the first circuit section and the second circuit section together such that each of the two circuit sections is separately supplied with a full operating voltage of the integrated circuit. The integrated circuit may additionally include a second transformer connected between the active mixer unit and the two intermediate frequency terminals.

Abstract: An improved antenna arrangement has the following features: the at least two antenna element systems (3.1, 3.2) are arranged and/or fed such that the main lobe (7.1) of the first antenna element device (3.1) and the main lobe (7.2) of the second antenna element device (3.2) include an angle (?) between one another, a network (13) is provided via which the first antenna element system (3.1) and the second antenna element system (3.2) can be supplied with a signal whose intensities can be set differently relative to one another, so that it is possible in this way to set a different angular transmission direction (?) for the antenna arrangement.

Abstract: An improved antenna arrangement is distinguished by the following features: at least two antenna element systems (3.1, 3.2) are provided and each has at least one antenna element (13; 13.1, 13.2), which are arranged offset with respect to one another, at least in the horizontal direction, the at least two antenna element systems (3.1, 3.2) transmit and receive at least in one common polarization plane, a network (17) is provided, via which the at least two antenna element systems (3.1, 3.

Abstract: Calibration device for a switchable antenna array, distinguished by the following improvements:

Abstract: An improved calibration device for an antenna array, or an improved antenna array, is provided by the following features: