Steering Vector

The propagation velocity of the signal in the form of a real positive scalar.

The default value is the speed of light.

The units of measurement are m/s.

Operating frequency source: Input Port or Property.

If the parameter is set to Input Port, the operating frequency is set via the input port `Freq'.

If the parameter is set to Property, the operating frequency is set using the Operating frequency (Hz) parameter.

The operating frequency of the system, set as a positive scalar.

The units of measurement are Hz.

Select this checkbox to display the conjugate control vector. Otherwise, the control vector will not be conjugate.

The number of bits used to quantize the phase shift component of the beamforming vector or control vector weights. Specify the number of bits as a non-negative integer. A value of zero means that quantization is not performed.

The method of setting the antenna array.

Available values:

The type of antenna or acoustic element.

Available values:

The range of operating frequencies of the antenna or acoustic element in the form of a vector row 1 on . Outside of this frequency range, the element has no response.

The units of frequency measurement are Hz.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna or `Custom Microphone'. Use the Frequency responses (dB) parameter to adjust the responses at these frequencies.

The frequency response of a custom antenna or custom acoustic element for frequencies defined by the Operating frequency vector (Hz) parameter. The dimensions of the Frequency responses (dB) vector must match the dimensions of the vector specified by the Operating frequency vector (Hz) parameter.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna or `Custom Microphone'.

The coordinate system of the radiation pattern of the user antenna is indicated by az-el or phi-theta'. When specifying `az-el, the Azimuth angles (deg) and Elevations angles (deg) parameters are used to set the coordinates of the points of the directional pattern. When specifying the phi-theta parameter, the Phi angles (deg) and Theta angles (deg) parameters are used to set the coordinates of the points in the radiation pattern.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna.

Azimuth angles, which will be used to calculate the radiation pattern of the antenna in the form of a vector row 1 on P. P must be greater than 2. The azimuth angles must be in the range of −180° up to 180° inclusive and arranged in strictly ascending order.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna and the Input Pattern Coordinate System parameter to az-el.

Elevation angles at which it is necessary to calculate the radiation pattern in the form of a vector 1 on . it must be more than 2. The units of measurement of angles are degrees. Elevation angles should be in the range of −90° to 90° inclusive and arranged in strictly ascending order.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna and the Input Pattern Coordinate System parameter to az-el.

The angular coordinates of the Phi points where the antenna radiation pattern is set. They are defined as a real vector-row 1 on . it must be more than 2. The units of measurement of angles are degrees. The values of the Phi angles should be in the range from 0° to 360° and arranged in strictly ascending order.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna and the Input Pattern Coordinate System parameter to phi-theta.

The angular coordinates of the Theta points where the antenna radiation pattern is set. They are defined as a real vector-lines 1 on . it must be more than 2. The units of measurement of angles are degrees. The values of the Theta angles must range from 0° to 180° and be arranged in strictly ascending order.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna and the Input Pattern Coordinate System parameter to phi-theta.

The value of the radiation pattern of the combined antenna, set as a matrix on or an array on on .

Value is equal to the value of the Operating frequency vector (Hz) parameter.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna.

The phase radiation pattern of the combined antenna, defined as a matrix on or an array on on .

Value is equal to the value of the Operating frequency vector (Hz) parameter.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna.

If the value of the parameter is enabled, then the radiation pattern of the antenna element rotates to align with the normal to the antenna array. If it is off, then the radiation pattern of the element does not rotate.

If the antenna is used in an antenna array and the Input Pattern Coordinate System parameter has the value az-el, checking this box rotates the radiation pattern so that the x-axis of the element’s coordinate system points along the normal to the antenna array. If there is no choice, the directional pattern of the element without rotation is used.

If the antenna is used in an antenna array and the Input Pattern Coordinate System parameter is set to phi-theta, checking this box rotates the radiation pattern so that the z axis of the element’s coordinate system points along the normal to the antenna array.

Use this parameter together with the Array Normal parameter. URA and UCA antenna arrays.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna.

The response frequencies of an acoustic element with a polar radiation pattern, specified as a real scalar or a real vector, are lines 1 on . The response frequencies are in the frequency range specified by the parameter Operating frequency vector (Hz).

Dependencies

To use this parameter, set the Element type parameter to Custom Microphone.

Set the response angles of the polar radiation pattern as a vector 1 to . The angles are measured from the central axis of the acoustic element and should be in the range of −180° to 180° inclusive.

Dependencies

To use this parameter, set the Element type parameter to Custom Microphone.

Set the value of the polar radiation pattern of the user acoustic element in the form of a real vector-row 1 on , where — the number of frequencies specified in the parameter Polar pattern frequencies (Hz). The string represents the value of the polar radiation pattern measured at the corresponding frequency specified in the Polar pattern frequencies (Hz). The radiation pattern is measured in the azimuthal plane. In the azimuthal plane, the elevation angle is 0°, and the central axis is 0° in azimuth and 0° in elevation. The polar radiation pattern is symmetrical around the central axis. Based on the polar diagram, it is possible to construct a directional diagram of an acoustic element in three-dimensional space.

Dependencies

To use this parameter, set the Element type parameter to Custom Microphone.

The range of operating frequencies of an antenna or acoustic element in the form of a 1-by-2 row vector in the form of `[LowerBound,UpperBound]'. Outside of this frequency range, the element has no response.

The units of frequency measurement are Hz.

Dependencies

To use this parameter, set the Element type parameter to Isotropic Antenna, Cosine Antenna, or 'Omni Microphone'.

The angles of the radiation pattern solution in degrees.

Dependencies

To use this parameter, set the Element type parameter to Gaussian Antenna or `Sinc Antenna'.

The direction of the zero radiation axis.

Dependencies

To use this parameter, set the Element type parameter to Cardioid Antenna.

The exponents of the cosine radiation pattern are in the form of a non-negative scalar or a 1 by 2 real matrix of non-negative values.

If the Exponent of cosine pattern is a 1 by 2 vector, then the first element is an indicator in the azimuth direction, and the second is in the elevation direction. With a scalar value of this parameter, the cosines in the azimuthal and elevation directions are raised to one power.

Dependencies

To use this parameter, set the Element type parameter to `Cosine Antenna'.

Select this option to mute the response of the element.

When the response is suppressed at all azimuth angles exceeding ± 90° from the wide side, the responses are set to zero. The wide side is defined as the azimuth angle of 0° and the elevation angle of 0°.

Dependencies

To use this parameter, set the Element type parameter to Isotropic Antenna or `Omni Microphone'.

The geometry of the antenna array, defined as:

The number of antenna array elements for ULA or UCA, set as an integer greater than or equal to 2.

Dependencies

To use this parameter, set the Geometry parameter to ULA or `UCA'.

The radius of the UCA antenna array, a positive scalar.

Dependencies

To use this parameter, set the Geometry parameter to UCA.

The dimensions of the URA antenna array, specified as a positive integer or a vector of positive integers 1 by 2.

For URA, the antenna array elements are indexed from top to bottom in the leftmost column, and then move to the next columns from left to right. The figure shows an antenna array for which the Array size parameter has the value [3,2], that is, it has three rows and two columns.

Dependencies

To use this parameter, set the Geometry parameter to `URA'.

The distance between adjacent elements of the ULA or URA lattices in the form of a positive scalar.

Dependencies

To use this parameter, set the Geometry parameter to ULA or `URA'.

The direction of the ULA linear axis, set as y, x or z. All elements of the ULA antenna array are evenly distributed along this axis in the local grid coordinate system.

Dependencies

To use this parameter, set the Geometry parameter to ULA.

A grid of URA element positions, defined as rectangular or triangular.

Dependencies

To use this parameter, set the Geometry parameter to `URA'.

The direction of the antenna array normal, set as x, y, or z.

The elements of the flat arrays lie in a plane orthogonal to the selected direction of the antenna array normal. The directions of the angular coordinates of the elements are directed along the direction of the antenna array normal.

Dependencies

To use this parameter, set the Geometry parameter to URA or `UCA'.

The positions of the elements of the conformal antenna array, given as a matrix of real values 3 on , where — the number of elements in the conformal lattice. Each column of this matrix represents the position [x;y;z] of an element of the antenna array in the local coordinate system of the antenna array. The origin of the local coordinate system is (0,0,0).

The units of measurement are m.

Dependencies

To use this parameter, set the Geometry parameter to `Conformal Array'.

The direction of the normal vectors of the elements of the conformal antenna array, defined as a 2-by-1 column vector or a 2-by-1 matrix , where indicates the number of elements in the antenna array. For the matrix, each column specifies the direction of the normal of the corresponding element in the form of [azimuth;elevation] relative to the local coordinate system. In the local coordinate system, the positive axis is coincides with the direction of the normal to the conformal antenna array. If the parameter value is a 2-by-1 column vector, then the same pointing direction is used for all elements of the antenna array.

Parameters of Element positions (m) and Element normals (deg) can be used to represent any arrangement in which pairs of elements differ from each other by certain transformations. These transformations can include translation, azimuth rotation, and elevation rotation. However, transformations that require rotation relative to the normal direction cannot be used.

Dependencies

To use this parameter, set the Geometry parameter to `Conformal Array'.

The change in the radiation pattern of the antenna array elements is set as a complex scalar or a complex vector 1 by , where — the number of antenna array elements.

The coefficients that change the radiation pattern, also called element weights, multiply the responses of the antenna array elements. The coefficients change both the amplitude and the phase of the response to reduce the side lobes or the direction of the main axis of the response.

If the value of the Taper parameter is a scalar, then the same weight is applied to each element. If Taper is a vector, then a weight from the vector is applied to the corresponding element of the antenna array. The number of scales must correspond to the number of antenna array elements.