Transmitter and Receiver Sets

1. Transmitter and Receiver Sets

2. Fundamentals ofTransmitters and Receivers • What is a transmitter or receiver point in InSite? • Transmitter point: location of a radiating antenna • Properties include the antenna type, radiated power, antenna orientation, waveform type or frequency • Receiver point: location of a receiving antenna • Also just serves as a field point for electric field and Poynting vector output • Transmitter points are defined in Wireless InSite by creating a transmitter set, same for receivers • A set can consist of a single point or 100,000+ points

3. Fundamentals ofTransmitters and Receivers (2) • A Tx/Rx set defines the physical arrangements of transmitter and receiver points in the environment • Allows the appearance of transmitter or receiver movement to be modeled • Point-to-multipoint (P2M) output is then organized by sets • All points in a set share parameters such as: • Radiated power (transmitters sets only). • Antenna, antenna rotations and waveform • Height

4. Fundamentals ofTransmitters and Receivers (3) • Tx/Rx editor allows position and size of sets to be modified graphically

5. Types of Transmitter and Receiver Sets • Points • independently placed points • Route • points along a series of connected line segments • XY grid • array of points with constant height relative to sea level or the underlying terrain • Horizontal arc • points along a horizontal circle • Vertical arc • arc in any vertical plane

6. Types of Transmitter and Receiver Sets (2) • Cylinder • cylinder with vertical central axis • Sphere • a sphere of points centered at a given location • Polygon • planar region with an arbitrary number of vertices and arbitrary orientation in space • Vertical surface • a route that has been extruded vertically • Points-on-face • Points permanently attached to a geometry facet

7. Types of Transmitter and Receiver Sets (3) • Trajectory • Antenna orientation is relative to the orientation of each individual point

8. Tx/Rx Display Options • Transmitter and receivers are displayed as green and red cubes, respectively • In the Tx/Rx Properties window, select Advanced… and change the value labeled Rendered size • The antenna pattern associated with the set can be displayed at a selected point within the set. Along with this, the control vectors indicating the antenna’s bore sight and polarization can be displayed.

9. Tx/Rx Display Options (2) • Tx/Rx sets can be made visible or invisible • To change the visibility of a set, select it, right-click and select Visible to toggle its visibility • Tx/Rx sets can be deactivated so that future calculations are not performed for the set • To toggle the set active or inactive, select Active in the right-click context menu • A label centered on the set can be displayed in the project view • The sets origin can also be displayed

10. Tx/Rx Properties Window

11. Tx/Rx Properties • Antenna • Each point in the set uses the same antenna pattern, and weights all transmitted or received rays depending on frequency and angle

12. Tx/Rx Properties • Waveform • Each point in the set uses the same waveform, which specifies the frequency of the transmitted rays and the receivers bandpass filter; select either the waveform assigned to the antenna, or another waveform

13. Tx/Rx Properties • Rotate antenna about X axis, then Y axis, and finally about Z axis • Angles, in degrees, applied to the antenna pattern in the order indicated. Angles must be specified 0-360.

14. Tx/Rx Properties • Input power (dBm) [Transmitter sets only] • The total input power of each transmitter point in dBm. The default value is 0.0 dBm. • The Total Radiated Power is the Input Power minus cable losses and losses due to the VSWR mismatch

15. Tx/Rx Properties • Spacing • For sets which require it, the distance in meters between adjacent points is given here. Spacing can be given as the angle between points for circular sets; cylinders, arcs and spheres.

16. Tx/Rx Editor • Once created, a transmitter or receiver set may be edited using a graphical editor • Move control points • Add or delete control points

17. Tx/Rx Editor (2) • The control points of the set are displayed in the editor as blue dots, which may be moved or altered by right-clicking on them • The right-click menu differs for each type of set: • Continuing a Route or Vertical surface • Adding additional points to a set • Changing the height or location of one or all of the control points • Deleting the point that was selected • Distances between points are displayed for reference

18. The editor shown to the right shows an arc reciever set being created. In this case the radius of the arc is displayed for reference. Tx/Rx Editor (3)

19. Importing from VMAP • Hydrography layer now available • Route sets can be imported from the transportation layer of the VMAP database • In this example several routes have been selected for addition to the project. Green lines represent transmitter sets, red lines are receiver sets, and yellow lines are selected for conversion.

20. The 3D antenna pattern for any transmitter or receiver can be displayed in the Project view window In the Tx/Rx properties window click on the “Antenna viewing options” button The orientation of the control vectors (boresight and polarization) and antenna pattern are displayed with the Tx/Rx set’s antenna rotations applied Antenna Pattern and Boresight Display

21. Antenna Pattern and Boresight Display (2)

22. Plane Wave Sources • A project can contain one or more plane wave sources • Plane wave parameters: • Waveform • Polarization; linear or circular • Intensity; Power density, RMS E-field or isotropic received power • Incident direction; Theta and Phi