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As global consumption of mobile network is increasing, 4G base station must be designed in a context of improvement in power efficiency. This article presents a new concept of managing the DC-to-DC converter supplying power amplifiers in base stations, targeting a factor two reduction in power consumption. This new concepts provide new specifications for base stations but also for DC-DC converter...
Despite the constant improvement in power efficiency of macro-cell base stations, the continuous capacity expansion increases considerably the global power consumption of the mobile network. This article presents a new concept of managing the DC-to-DC converter supplying power amplifiers in base stations, targeting a factor two reduction in power consumption. Details of the concept and the practical...
This article presents a new problematic in DC-to-DC converter realized for 4G macro cell base station with efficiency improvement concepts. These concepts from EARTH project target a factor two reduction in 4G base station power consumption. The concepts are presented and detailed. DC-to-DC converter specifications needed are discussed. A practical implementation of a 500 kHz and zero to 112W buck...
There is a growing demand to limit energy consumption in Western countries. Actual challenges are to provide products compatible with classical lamp socket and voltage. Emerging technologies are Compact Fluorescent Lamps (CFL) and LEDs, but there are some drawbacks mainly concerning CFL and compatibility with dimmers. In this paper we present the design of an innovative LED driver integrated circuit...
Lighting applications are nowadays arriving at a crossing point. Production and selling of incandescent lamps is drastically decreasing. European countries have decided to arrive to complete interdiction in 2012. Compact fluorescent lamps (CFL) have some drawbacks limiting their usefulness, with many problems related to compatibility with dimmers, even for supposed dimmable CFL. We present the design...
In today's macro base stations, the transceiver system is one of the most power-consuming components, simply due to low energy efficiency of the power amplifier. The decreased performance in medium and low load situations gives significant room for energy saving. For exploiting this potential, different concepts are proposed by the EARTH project to mitigate the energy wastage in transceiver systems...
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