FMULT is a behavioral representation of a frequency multiplier. The model converts a
signal at frequency F_{0} to a signal at frequency
NF_{0}. The conversion gain is user-specified.

Name | Description | Unit Type | Default |
---|---|---|---|

ID | Element ID | Text | |

ID | Element ID | FM1 | |

N | Frequency multiplication factor | 2 | |

G | Conversion gain | DB | -3 |

*F0 | Input center frequency | Frequency | _FREQH1 |

*BW | Signal bandwidth as a % of input center frequency | 25 | |

*S11MAG | Input reflection coefficient (magnitude) | 0 | |

*S11ANG | Input reflection coefficient (phase) | 0 | |

*S22MAG | Output reflection coefficient (magnitude) | 0 | |

*S22ANG | Output reflection coefficient (phase) | 0 | |

Z0 | Port impedance | Resistance | 50 ohm |

Pth | Input power threshold | Power (dB) | -10 |

`* indicates a secondary parameter`

Parameter BW sets the model's passband for multitone operation. Set the parameter high enough to cover the bandwidth of the input signal.

The specified input and output impedances are valid for all frequencies. The input and output ports are AC-coupled.

This element does not have an assigned layout cell. You can assign artwork cells to any element. See “Assigning Artwork Cells to Layout of Schematic Elements” for details.

Parameter P_{th}is extremely important for proper operation of the
model. It should be set approximately 20 dB below the expected available input power. Values
higher than 10 dB below input will result in incorrect conversion gain; values lower than 30
dB below input will result in slower convergence.

The model operates as a frequency mixer, with the local oscillator at frequency
(N-1)F_{0} generated from the input signal by a clipping operation. The
lower the value of P_{th} the harder the clipping and the slower the
convergence. Conversely, the higher the value of P_{th} the softer the
clipping, the smaller the amplitude of the local oscillator and the less accurate the
conversion gain estimate