Balun circuit – balance degree

An important standard indicator of Barron is its balance, which is the degree to which two balanced outputs (one is 180 ° inverted output and the other is non inverted output) are close to the ideal state of ‘equal power level, 180 ° phase difference’. The phase angle difference between two outputs and the degree of deviation of 180 ° is called the phase imbalance of Balun.
Amplitude balance
This indicator is determined by the structure of Barron and the degree of line matching, usually measured in dB. Amplitude balance refers to the matching of output power levels, and the difference between two output power levels is called amplitude imbalance, in dB. In general, the common mode rejection ratio (CMRR) will increase by 0.1dB for every 0.1dB increase in amplitude balance or 1 ° increase in phase balance
Common mode rejection ratio (CMRR)
When two identical signals with the same phase are injected into the balun’s balanced port, it may result in two different results of transmission or reception. CMRR refers to the amount of attenuation that occurs during the transmission of a signal from a balanced port to an unbalanced port, in dB. The CMRR is determined by the vector addition result of the two signals, which further depends on the amplitude balance and phase balance of Balun.
It is precisely because of this characteristic of the Balun circuit that it is widely used in intelligent ONUs. On the WiFi end, the almost perfect balance feature ensures the stability of WiFi performance and rate stability.
The above is a brief overview of Balun Circuit – Balance, which can be used as a reference for everyone. Our company has a strong technical team and can provide professional technical services for customers. At present, our company has diversified products: intelligent onu, communication optical module, optical fiber module, sfp optical module, olt equipment, Ethernet switch and other network equipment. If you need, you can understand them in depth.