Impairments:IQ Impairments:IQ Gain Imbalance (dB)
- Updated2025-10-13
- 2 minute(s) read
Specifies the ratio, in dB, of the mean amplitude of the in-phase (I) signal to the mean amplitude of the quadrature-phase (Q) signal.
I/Q gain imbalance follows the definition shown in the following equations:
The input is calculated by the following equation.
If the quadrature skew is in degrees, convert it to radians, and then apply these equations.
where 
is the gain imbalance input, in dB, and 
is the quadrature skew, in radians.
The output is calculated by the following equations:
The default value is 0. Valid values are -6 to 6, inclusive.
Remarks
The following table lists the characteristics of this property.
| Short Name | IQ Gain Imbalance (dB) |
| Data type |  |
| Permissions | Read/Write |
| High-level VIs | niBT SG Set IQ Gain Imbalance |
| Resettable | Yes |