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Sources
The Continuous Wave block models a constant modulation on a carrier in the SimRF circuit-envelope simulation environment. For more information about simulating RF systems, see the example, Reduce Computations by Using RF Simulation Techniques.
The block implements the relation
or
at the carrier ωk, depending on the source type.
Specify the wave type as:
Ideal Voltage — The block simulates a constant voltage envelope v0 at the specified Carrier frequencies. The envelope has real and imaginary parts specified by the Constant in-phase value and Constant quadrature value parameters.
Ideal Current — The block simulates a constant current envelope i0 at the specified Carrier frequencies. The envelope has real and imaginary parts determined by the Constant in-phase value and Constant quadrature value parameters.
Power — The block simulates the constant voltage envelope
where:
P0 is the value of the Available power parameter
Zs is the value of the Source impedance (ohms) parameter.
ϕ is the value of the Angle (degrees) parameter.
The default value of this parameter is Ideal Voltage.
When the Source type is Ideal Voltage or Ideal Current, specify the in-phase modulations for each of the specified Carrier frequencies as a vector of real numbers. Specify the units from the corresponding drop-down list. The default value of this parameter is 0 V.
When the Source type is Ideal Voltage or Ideal Current, specify the quadrature modulations for each of the specified Carrier frequencies as a vector of real numbers. Specify the units from the corresponding drop-down list. The quadrature value at baseband must equal 0. The default value of this parameter is 0 V.
When the Source type is Power, specify the source impedance as either 0 or a complex number with real and imaginary parts that are greater than or equal to 1e-18 Ohm. If you set this parameter to a value with real or imaginary part between 0 and 1e-18 Ohm, the block uses a value with real or imaginary part equal to 1e-18 Ohm during simulation. The default value of this parameter is 0 Ohm.
When the Source type is Power, specify the available power at the specified Carrier frequencies as a vector of real numbers. Specify the units from the corresponding drop-down list. The default value of this parameter is 0 W.
When the Source type is Power, specify the phase angles of the power waves at the specified Carrier frequencies as a vector of real numbers. The default value of this parameter is 0 degrees.
Enter a vector of carrier frequencies whose elements are a subset of the frequencies specified in the SimRF Parameters block. Specify the units from the corresponding drop-down list. The default value of this parameter is 0 Hz.
Select this check box to internally ground and hide the negative terminals of the block. Clear the check box to expose the negative terminals, allowing you to connect them to other parts of your model. By default, this check box is selected.
All models in the SimRF documentation that contain a Mixer block also contain a Continuous Wave block used as a local oscillator:
See the Examples section for a list of examples in the SimRF User's Guide and SimRF Getting Started Guide.
See the Demos section for a list of SimRF demos.
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