Base station high frequency power supply circuit

Why is a base station power amplifier important?

The proliferating frequency bands and modulation schemes of modern cellular networks make it increasingly important that base-station power amplifiers offer the right combination of output power, efficiency and multi-band support – at both peak and average power levels. PAs are the main energy consumers in modern base stations.

What is PA drain bias voltage modulation?

PA drain bias voltage modulation The signals in modern wireless communication systems have high peak-to-average power ratios (PAPR). Techniques such as average power tracking (APT) and envelope tracking (ET) increase the power efficiency of a PA in a base-station application, as depicted in Figure 1.

What are the requirements for et power supplies?

To meet the requirements for ET power supplies, devices must operate eficiently at very high frequencies. This requires a device with an excellent hard-switching figure of merit, and also layout and package characteristics that maximize in-circuit performance.

What is the coverage area of 5G high-frequency base stations?

The radius of coverage area of 5G high-frequency base stations will be less than one-tenth of that of 4G base stations, and the coverage area of 5G high-frequency base stations will be less than one percent of that of 4G base stations. The deployment of macro base stations is difficult and the site resources are not easy to obtain.