AIAntennaPatch Properties

Read-only properties of AI-based patch antennas

Since R2023b

The read-only properties of the microstrip patch family type AIAntenna are derived from the corresponding properties of a regular microstrip patch family antenna. Set these properties in the regular microstrip patch object before creating an AIAntenna from it.

Substrate Properties

SubstrateName — Name of dielectric material

Read-only: "Air" (default)

This property is read-only.

Name of the dielectric material in the parent catalog element, returned as a string.

Example: "Air"

Data Types: string

SubstrateEpsilonR — Relative permittivity of dielectric material

Read-only: 1 (default)

This property is read-only.

Relative permittivity of the dielectric material in the parent catalog element, returned as a positive scalar.

Example: 1

Data Types: double

SubstrateLossTangent — Dissipation factor of dielectric material

Read-only: 0 (default)

This property is read-only.

Dissipation factor of the dielectric material in the parent catalog element, returned as a scalar.

Example: 0

Data Types: double

SubstrateThickness — Thickness of dielectric material

Read-only: positive scalar

This property is read-only.

Thickness of the dielectric material in the parent catalog element, returned as a positive scalar in meters.

Example: 0.0018

Data Types: double

Ground Plane and Feed Properties

GroundPlaneLength — Ground plane length along x-axis

Read-only: positive scalar

This property is read-only.

Ground plane length measured along the x-axis, returned as a positive scalar in meters.

Example: 0.1795

Data Types: double

GroundPlaneWidth — Ground plane width along y-axis

Read-only: positive scalar

This property is read-only.

Ground plane width measured along the y-axis, returned as a positive scalar in meters.

Example: 0.1795

Data Types: double

PatchCenterOffset — Signed distance from center along length and width of ground plane

Read-only: [0 0] (default) | two-element real vector

This property is read-only.

Signed distance from the center along the length and width of the ground plane, returned as a two-element vector in meters. This property is used to adjust the location of the patch relative to the ground plane.

Example: [0.01 0.01]

Data Types: double

FeedOffset — Signed distance from center along length and width of ground plane

Read-only: two-element real vector

This property is read-only.

Signed distance from the center along length and width of ground plane, returned as a two-element vector. This property is used to adjust the location of the feed point relative to the ground plane and patch. The feed is placed sufficiently inside the edges of the patch to successfully mesh it during analysis.

Example: [0.0181 0]

Data Types: double

FeedDiameter — Feed diameter

Read-only: positive scalar

This property is read-only.

Feed diameter, returned as a positive scalar in meters.

Note

This property is supported only for below AntennaType:

• patchMicrostripEnotch, patchMicrostripHnotch, and patchMicrostripTriangular

Example: 0.0600

Data Types: double

Conductor Properties

ConductorName — Name of conductor

Read-only: "PEC" (default) | string scalar

This property is read-only.

Name of the antenna conductor material, returned as a string scalar.

Example: "Copper"

Data Types: string

ConductorConductivity — Conductivity of conductor

Read-only: Inf (default) | positive scalar

This property is read-only.

Conductivity of the antenna conductor material, returned as a positive scalar in S/m.

Example: 59600000

Data Types: double

ConductorThickness — Thickness of conductor

Read-only: 0 (default) | positive scalar

This property is read-only.

Thickness of the antenna conductor material, returned as a positive scalar in meters.

Example: 3.5560e-05

Data Types: double

Alignment Properties

Tilt — Tilt angle of antenna

0 (default) | scalar | vector

Tilt angle of the antenna in degrees, specified as a scalar or vector. For more information, see Rotate Antennas and Arrays.

Example: 90

Example: Tilt=[90 90],TiltAxis=[0 1 0;0 1 1] tilts the antenna at 90 degrees about the two axes defined by the vectors.

Data Types: double

TiltAxis — Tilt axis of antenna

[1 0 0] (default) | three-element vector | 2-by-3 matrix | "X" | "Y" | "Z"

Tilt axis of the antenna, specified as one of these values:

• Three-element vector of Cartesian coordinates in meters. In this case, each coordinate in the vector starts at the origin and lies along the specified points on the x-, y-, and z-axes.

• Two points in space, specified as a 2-by-3 matrix corresponding to two three-element vectors of Cartesian coordinates. In this case, the antenna rotates around the line joining the two points.

• "x", "y", or "z" to describe a rotation about the x-, y-, or z-axis, respectively.

For more information, see Rotate Antennas and Arrays.

Example: [0 1 0]

Example: [0 0 0;0 1 0]

Example: "Z"

Data Types: double | string

Load Properties

LoadImpedance — Impedance of antenna load

Read-only: "[]" (default) | complex scalar

This property is read-only.

Impedance of the antenna load, returned as a complex scalar in ohms.

Example: 75

Data Types: double
Complex Number Support: Yes

LoadFrequency — Resonant frequency of antenna load

Read-only: "[]" (default) | positive scalar

This property is read-only.

Resonant frequency of the antenna load, returned as a positive scalar.

Example: 1e9

Data Types: double

LoadLocation — Location of antenna load

"feed" (default) | 1-by-3 real vector

Location of the antenna load, returned as a 1-by-3 vector of Cartesian coordinates in meters. By default, the load is located at the feed location.

Example: [0 1 0]

Data Types: double | string

Version History

Introduced in R2023b