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Real-Imag to Complex

Convert real and/or imaginary inputs to complex signal

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  • Real-Imag to Complex block

Libraries:
Simulink / Math Operations
HDL Coder / Math Operations

Description

The Real-Imag to Complex block converts real and/or imaginary inputs to a complex-valued output signal.

The inputs can both be arrays (vectors or matrices) of equal dimensions, or one input can be an array and the other a scalar. If the block has an array input, the output is a complex array of the same dimensions. The elements of the real input map to the real parts of the corresponding complex output elements. The imaginary input similarly maps to the imaginary parts of the complex output signals. If one input is a scalar, it maps to the corresponding component (real or imaginary) of all the complex output signals.

Examples

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Open Model

This example shows how to use the Real-Imag to Complex block to construct a complex-valued signal from real and imaginary parts. You can provide both the real and imaginary parts as block inputs, or provide one value as an input, and the other on the block dialog box.

Ports

Input

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Real value to be converted to complex-valued output signal, specified as a scalar, vector, or matrix.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | fixed point | bus

Imaginary value to be converted to complex-valued output signal, specified as a scalar, vector, or matrix.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | fixed point | bus

Real or imaginary value to convert to complex output signal, specified as a finite scalar, vector, or matrix.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | fixed point | bus

Output

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Complex signal, formed from real and imaginary values.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | fixed point

Parameters

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Specify the type of input: a real input, an imaginary input, or both.

Programmatic Use

Block Parameter: Input
Type: character vector
Values: 'Real and imag' | 'Real' | 'Imag'
Default: 'Real and imag'

Specify the imaginary value to use when converting the input to a complex-valued output signal.

Dependencies

To enable this parameter, set Input to Real.

Programmatic Use

Block Parameter: ConstantPart
Type: character vector
Values: imaginary value
Default: '0'

Specify the constant real value to use when converting the input to a complex-valued output signal.

Dependencies

To enable this parameter, set Input to Imag.

Programmatic Use

Block Parameter: ConstantPart
Type: character vector
Values: finite, real-valued scalar, vector, or matrix
Default: '0'

Specify the time interval between samples. To inherit the sample time, set this parameter to -1. For more information, see Specify Sample Time.

Dependencies

This parameter is visible only if you set it to a value other than -1. To learn more, see Blocks for Which Sample Time Is Not Recommended.

Programmatic Use

To set the block parameter value programmatically, use the set_param function.

Parameter: SampleTime
Values: "-1" (default) | scalar or vector in quotes

Block Characteristics

Data Types

double | fixed point | integer | single

Direct Feedthrough

yes

Multidimensional Signals

yes

Variable-Size Signals

yes

Zero-Crossing Detection

no

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Fixed-Point Conversion
Design and simulate fixed-point systems using Fixed-Point Designer™.

Version History

Introduced before R2006a

See Also

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