Microwave loss

## Keywords

electrical, unidirectional

## Ports

Name | Type |
---|---|

input | Electrical Signal |

output | Electrical Signal |

## Properties

### General Properties

Name | Default value | Default unit | Range |
---|---|---|---|

Defines the name of the element. |
Microwave Loss | - | - |

Defines whether or not to display annotations on the schematic editor. |
true | - | [true, false] |

Defines whether or not the element is enabled. |
true | - | [true, false] |

Defines the element unique type (read only). |
Microwave Loss | - | - |

A brief description of the elements functionality. |
Microwave loss | - | - |

Defines the element name prefix. |
LOSS | - | - |

Defines the element model name. |
- | - | - |

Defines the element location or source in the library (custom or design kit). |
- | - | - |

Defines the local path or working folder $LOCAL for the element. |
- | - | - |

An optional URL address pointing to the element online help. |
- | - | - |

### Standard Properties

Name | Default value | Default unit | Range |
---|---|---|---|

The interaction length of the modulator. |
1 | m | [0, +∞) |

Defines if the loss is constant or frequency dependent. Frequency dependency can be linear (~1/f), square root [~1/sqrt(f)] or from a table. |
constant | - | [constant, linear, square root, table |

Defines the microwave loss. |
0 | dB/m | [0, +∞) |

Central frequency of operation. |
1 | Hz | [0, +∞) |

Defines whether or not to load frequency dependent attenuation values from an input file or to use the currently stored values. |
false | - | [true, false] |

The file containing the frequency dependent attenuation values. Refer to the Implementation Details section for the format expected. |
- | - | - |

The table containing the frequency dependent attenuation values |
<2> [1, 0] | - | - |

### Numerical/Digital Filter Properties

Name | Default value | Default unit | Range |
---|---|---|---|

Defines whether or not to use a single tap digital filter to represent the element transfer function in time domain. |
false | - | [true, false] |

Defines the method used to estimate the number of taps of the digital filter. |
fit tolerance | - | [disabled, fit tolerance, group delay |

Defines the mean square error for the fitting function. |
0.001 | - | (0, 1) |

Defines the window type for the digital filter. |
rectangular | - | [rectangular, hamming, hanning |

Defines the number of coefficients for digital filter. |
256 | - | [1, +∞) |

Defines the number of coefficients for digital filter. |
4096 | - | [1, +∞) |

Defines the time delay equivalent to a number of coefficients for digital filter. |
0 | s | [0, +∞) |

Defines whether to use the initial input signal to initialize filter state values or to set them to zero values. |
false | - | [true, false] |

### Diagnostic Properties

Name | Default value | Default unit | Range |
---|---|---|---|

Enables the frequency response of the designed filter implementation and the ideal frequency response to be generated as results. |
false | - | [true, false] |

The number of frequency points used when calculating the filter frequency response. |
1024 | - | [2, +∞) |

## Results

Name | Description |
---|---|

diagnostic/response #/transmission | The complex transmission vs. frequency corresponding to the ideal and designed filter. |

diagnostic/response #/gain | The gain vs. frequency corresponding to the ideal and designed filter. |

diagnostic/response #/error | Mean square error comparing the frequency response of the designed filter implementation with the ideal frequency response. |

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## Implementation Details

Following is an example and implementation details of how the Microwave Loss Element works, please see the example file: Microwave_Loss.icp

The key characteristics of this element are in the "standard" setting, the "length", "microwave loss", "loss type" and "loss reference frequency". Following figure shows the measured losses for different loss types (constant, linear and square root) with 1 m of interaction of modulator length, 1 dB/m microwave loss and 10 GHz central frequency of operation.