Abstract: A method for evaluating a buildings wireless performance, the method comprising: constructing an environment model, the environment model comprising a layout of the building, a power density of transmitters PT[W/m2], and a considered frequency band fc; computing a signal to interference plus noise ratio (SINR) for the building in dependence on the environment model; computing a SINR for an open space in dependence on the environment model, the computing size for the open space being the same as the computing size of the building, and wherein the open space is an ideal space in absence of the building or other surroundings; comparing the SINR for the building with the SINR for the open space; and in dependence on the comparison, evaluating the building wireless performance by calculating an interference power gain and an intended power gain for the building.

Abstract: A method for evaluating a buildings wireless performance, the method comprising: constructing an environment model, the environment model comprising a layout of the building, a power density of transmitters PT[W/m2], and a considered frequency band fc; computing a signal to interference plus noise ratio (SINR) for the building in dependence on the environment model; computing a SINR for an open space in dependence on the environment model, the computing size for the open space being the same as the computing size of the building, and wherein the open space is an ideal space in absence of the building or other surroundings; comparing the SINR for the building with the SINR for the open space; and in dependence on the comparison, evaluating the building wireless performance by calculating an interference power gain and an intended power gain for the building.

Abstract: An apparatus for measuring over-the-air (OTA) wireless communication performance in an automotive application of a device under test (DUT) arranged on or in a vehicle. The apparatus includes a chamber defining an internal volume therein, such as an EMC chamber or a semi-anechoic chamber. Further, a rotatable platform for supporting the vehicle is provided enclose in the internal volume, together with at least one chamber antenna. A communication system test instrument is further provided for measuring the transmission between the device under test and the chamber antenna. The chamber antenna is an array antenna, including a horizontal linear array of antenna elements, the chamber antenna preferably providing a plane wave in near-field where the vehicle is located. The array may further include a plurality of horizontal linear arrays, overlying each other in a vertical direction.

Abstract: A self-grounded bowtie antenna arrangement including an antenna structure including a number of antenna petals including arm sections tapering towards a respective end tip portion and being made of an electrically, conducting material, the end tip portions being arranged to approach a base portion on a first side thereof and to be connected to feeding ports, a specific port being provided for each antenna petal. The base portion includes a conducting ground plane or a Printed Circuit Board, and each antenna petal is made in one piece from a metal sheet or similar, and it is adapted to be fabricated as separate units, and to be mountable onto a front or back side of the base portion or ground plane by means of surface mounting. The ground plane may be a Printed Circuit Board, meaning that the bowties can be mounted by automatic placement and soldering machines.

Abstract: An apparatus for measuring over-the-air (OTA) wireless communication performance in an automotive application of a device under test (DUT) arranged on or in a vehicle. The apparatus includes a chamber defining an internal volume therein, such as an EMC chamber or a semi-anechoic chamber. Further, a rotatable platform for supporting the vehicle is provided enclose in the internal volume, together with at least one chamber antenna. A communication system test instrument is further provided for measuring the transmission between the device under test and the chamber antenna. The chamber antenna is an array antenna, including a horizontal linear array of antenna elements, the chamber antenna preferably providing a plane wave in near-field where the vehicle is located. The array may further include a plurality of horizontal linear arrays, overlying each other in a vertical direction.

Abstract: A self-grounded bowtie antenna arrangement including an antenna structure including a number of antenna petals including arm sections tapering towards a respective end tip portion and being made of an electrically, conducting material, the end tip portions being arranged to approach a base portion on a first side thereof and to be connected to feeding ports, a specific port being provided for each antenna petal. The base portion includes a conducting ground plane or a Printed Circuit Board, and each antenna petal is made in one piece from a metal sheet or similar, and it is adapted to be fabricated as separate units, and to be mountable onto a front or back side of the base portion or ground plane by means of surface mounting. The ground plane may be a Printed Circuit Board, meaning that the bowties can be mounted by automatic placement and soldering machines.

Abstract: A self-grounded bowtie antenna arrangement includes an antenna structure having a number of antenna petals. An antenna petal has an arm section tapering toward an end tip portion and is made of an electrically conductive material. End tip portions are arranged to approach a first side of a base portion and to connect to feeding ports. The base portion includes a conductive ground plane or a printed circuit board. Each antenna petal is made in one piece from a conductive sheet, such as metal, and is surface-mounted on either the front side or back side of the base portion. Antenna petals can be mounted by automatic placement and soldering (“pick-and-place”) machines.