Antenna position Sample Clauses
The "Antenna position" clause defines the specific location or placement requirements for antennas involved in a project or agreement. It typically outlines where antennas must be installed, such as on a particular part of a building, tower, or property, and may specify technical or regulatory constraints, like height limits or required clearances from other structures. By clearly establishing where antennas can be positioned, this clause helps prevent disputes over placement, ensures compliance with safety and zoning regulations, and facilitates efficient project planning.
Antenna position. Measurements shall be made on the left and right sides of the vehicle. The horizontal distance is from the reference point of the antenna to the nearest part of the vehicle body. Multiple antenna positions may be required (both for 10 m and 3 m antenna distance) depending on the vehicle length. The same positions shall be used for both horizontal and vertical polarization measurements. The number of antenna positions and the position of the antenna with respect to the vehicle shall be documented in the test report. - If the length of the vehicle is smaller than the 3 dB beamwidth of the antenna, only one antenna position is necessary. The antenna shall be aligned with the middle of the total vehicle (see Figure 4); - If the length of the vehicle is greater than the 3 dB beamwidth of the antenna, multiple antenna positions are necessary in order to cover the total length of the vehicle (see Figure 5). The number of antenna positions shall allow to meet the following condition:
(1) With:
Antenna position. 2.1.1 Determining the direction and polarization from which the best DVB-T2 signal will be received on the customer premises by utilizing the Sentech coverage information system found at ▇▇▇▇://▇▇▇▇▇▇.▇▇▇▇▇▇▇.▇▇.▇▇;
Antenna position. Measurements shall be made on the left and right sides of the vehicle The horizontal distance is from the reference point of the antenna to the nearest part of the vehicle body. Multiple antenna positions may be required (both for 10 m and 3 m antenna distance) depending on the vehicle length. The same positions shall be used for both horizontal and vertical polarization measurements. The number of antenna positions and the position of the antenna with respect to the vehicle shall be documented in the test report. - if the length of the vehicle is smaller than the 3 dB beamwidth of the antenna, only one antenna position is necessary. The antenna shall be aligned with the middle of the total vehicle (see Figure 4) - if the length of the vehicle is greater than the 3 dB beamwidth of the antenna, multiple antenna positions are necessary in order to cover the total length of the vehicle (see Figure 5). The number of antenna positions shall allow to meet the following condition :
(1) with N : number of antenna positions D : measurement distance (3 m or 10 m) 2β : 3 dB antenna beamwidth angle in the plane parallel to ground (i.e. the E-plane beamwidth angle when the antenna is used in horizontal polarization, and the H-plane beamwidth angle when the antenna is used in vertical polarization); L : total vehicle length Depending of the chosen values of N (number of antenna positions) different set-up shall be used: if N=1 (only one antenna position is necessary) and the antenna shall be aligned with the middle of the total vehicle length (see Figure 4) if N>1 (more than one antenna position is necessary) and multiple antenna positions are necessary in order to cover the total length of the vehicle (see Figure 5). The antenna positions shall be symmetric in regard to the vehicle perpendicular axis. Figure 1 Clear horizontal surface free of electromagnetic reflection delimitation of the surface defined by an ellipse Figure 2 Position of antenna in relation to the vehicle: Figure 2a Dipole antenna in position to measure the vertical radiation components Figure 2b Dipole antenna in position to measure the horizontal radiation components Figure 3 Vehicle in configuration "REESS charging mode" coupled to the power grid: Example of test setup for vehicle with socket located on vehicle side (charging mode 1 or 2, a.c. powered, without communication) Figure 3a Figure 3b Legend:
1 Vehicle under test 2 Insulating support 3 Charging harness (including EVSE for charging mode 2...