An antenna with at least one pair of electrically conducting lands, and a second pair of spaced-apart electrically conducting lands or a single land, wherein the lands are parallel with respect to a first electrically conductive sheet is disclosed.

An antenna array has wideband high gain characteristics and includes: a dielectric; a loop provided on a first surface of the dielectric and that has a first slot and a second slot; a first feed pin provided at a position corresponding to the first slot on a second surface of the dielectric; a second feed pin provided at a position corresponding to the second slot on the second surface of the dielectric; and a divider provided between the first feed pin and the second feed pin, and electrically connected to the loop.

The invention relates to an arrangement (10) for providing at least one communication function for electronics (2) of a vehicle (1), preferably for a door handle electronics (2) of the vehicle (1), preferably for a communication interface (40) of the vehicle (1), exhibiting a support element (20) adapted to be mounted at mounting positions (I, II) on different sides of the vehicle (1) to selectively perform the mounting at at least a first (I) or second (II) of the mounting positions (I, II), a first communication means (41) arranged at a first layer (21) of the support element (20), a second communication means (42) arranged at a second layer (22) of the support element (20),
said communication means (41, 42) being arranged opposite to each other and electrically connected in parallel to create at least one communication area suitable for different selected mounting positions (I, II).

There is provided a radio wave absorbing composition containing a magnetic powder and a binder. There is also provided a radio wave absorber containing a magnetic powder and a binder. The magnetic powder is a powder of a substitution-type hexagonal ferrite subjected to surface treatment with a surface treatment agent, the surface treatment agent is a silicon-based compound, and the binder is an olefin-based resin.

A device for protecting a motor vehicle radar is provided. The device includes a body formed from a material that is transparent to radar waves and visible light, a support that is opaque to light and transparent to radar waves, and a light element arranged between the support and the body, an air cavity being provided between the support and the body, the support and the body being assembled together at their edges, characterized in that the thickness of the cavity is between ½ the radar wavelength and 12 times the radar wavelength.

A coated window pane for rail vehicles, wherein the coating is made in a structured and electrically conductive form and includes filtering characteristics for radio signals, where the coating is structured as a conductive periodic grating, in which at least two annular coatings are respectively embedded in the intermediate spaces, the at least two annular coatings are respectively filled by a coated area, and the grating, the annular coatings and the coated areas are separated by insulating regions such that the coated, structured window panes have filtering characteristics such that signals or frequency ranges of signals from and to radio communication systems are arranged outside the vehicle pass through and signals or frequency ranges of signals from and to radio communication devices arranged inside the vehicle are blocked or are greatly attenuated, and such that high requirements with respect to heat shielding and sun shielding properties are also met.

A communication unit includes a circuit board on which a communication circuit is provided, an antenna connected to the circuit board, and a housing storing the circuit board and the antenna. The housing includes an upper plate, a lower plate, and an outer wall. The upper plate is located above the lower plate. An inner space is defined by the upper plate, the lower plate, and the outer wall. In the inner space, an inner wall surrounds the entire periphery of the circuit board in a plan view and projects from a lower surface of the upper plate to a position farther downward than the circuit board in a side view.

A handle for a motor vehicle opening, equipped with an ultra-high-frequency antenna having a device for transmitting and receiving a signal at a predetermined wavelength, with a device for detecting the approach of and/or contact by a user, with a printed circuit board and with at least one connecting cable intended for electrically connecting the printed circuit board to an electronic control unit. The at least one connecting cable has a section either projecting from the remainder of the at least one connecting cable or surrounded by an electromagnetically insulating coating coaxial with the at least one connecting cable, a length of the projecting section or a length of the coaxial coating being equal to one quarter of said predetermined wavelength with a tolerance of +/−20%.

Multi-input downconversion mixers, systems, and methods are provided with input switching in the intermediate frequency or baseband domain. One illustrative mixer embodiment includes: multiple differential pairs of transistors and multiple pairs of switches. Each differential transistor pair has their bases or gates driven by a differential reference signal, their emitters or sources connected to a common node having a current or voltage driven based on a respective one of multiple receive signals, and their collectors or drains providing a product of the differential reference signal with the respective one of the multiple receive signals. Each of the switch pairs selectively couples differential output nodes to the collectors or drains of a respective one of the multiple differential pairs, enabling the differential output nodes to convey an output signal that is a sum of products from selected ones of the multiple differential pairs.

A gradient permittivity film comprises (a) a first permittivity layer comprising a first continuous matrix of a first material having a first relative permittivity (ε.sub.r1) and a second component having a second relative permittivity (ε.sub.r2) dispersed in the first continuous matrix, the first permittivity layer having a first effective layer relative permittivity (ε.sub.1) and a thickness (T.sub.1); And (b) a second permittivity layer having a second effective layer relative permittivity (ε.sub.2) and a thickness (T.sub.2) disposed on the first permittivity layer. T.sub.1=0.8(t.sub.1) to 1.2(t.sub.1), where

[00001]$t_1=\frac{c}{4f\sqrt{{\epsilon }_1}};T_2=0.8\left(t_2\right)\mathrm{to}1.2\left(t_2\right),\mathrm{where}{t}_2=\frac{c}{4f\sqrt{{\epsilon }_2}}.$