With the development of LTE, Pico-cell is widely used. Pico-Cell is a small base station that can support 200 users at the same time in the range of 100 to 200 meters. In large buildings, shopping centers, and densely populated hotspots, Pico-Cell can increase the capacity of LTE networks, improve the quality and stability of network services, and ensure user experience. Compared to the macro base station, the Pico-Cell is compact (equivalent to one-third of the current RRU volume) and consumes less power. Compared to Femto-Cell (a femtocell that supports 10m coverage and 20 user access), Pico-Cell can support more user access and wider coverage. In the AVAGO product line of Shiqiang, the power amplifier MGA-31689 is suitable for Pico products. Its 1db compression point is 27.6dBm, and LTE PAR is 8.5db. The MGA-31689 meets LTE high linearity requirements at 19dBm output power. That meets the requirements for data throughput in LTE. Secondly, the gain of the MGA-31689 is 18dB. In the simulation, the performance of all aspects is balanced. The gain is 16db. Generally, the Transceiver output power is -30dBm~10dBm, then the 16db gain is the output requirement of the system. Its simulation performance is as follows: Figure 1 Simulation results From the simulation performance point of view, in the 1.5G~3Ghz frequency band, the gain decreases with increasing frequency. The digital ATT or baseband can be used for attenuation in the PICO product to achieve the gain balance. In addition, in the original SM, the S22 relative standing wave Preferably, the convergence is better than S11 and the position is close to the origin, which helps to optimize the output power and linear performance of the power amplifier itself. Figure 2 Simulation schematic From the simulation schematic diagram, the peripheral matching value is different from the datasheet, which can be adjusted according to the circuit performance or actual index requirements of the actual board. The excellent performance of MGA-31689 provides good signal coverage and high-quality signal transmission for PICO products. In the LTE era, it better meets the needs of people for indoor mobile Internet access and other data services. Now MGA-31689 has been ordered by Shiqiang. Welcome to call Shiqiang Service Hotline 40088-73266 for professional and fast service! Recommend Vape,Disposable Vape,Electronic Cigarette,Puff Bar Disposable Vape Guangzhou Yunge Tianhong Electronic Technology Co., Ltd , https://www.e-cigarettesfactory.com
