Performance Analysis of Multi-radio Transmitter with Polar or Cartesian Architectures associated with High Efficiency Switched-Mode Power Amplifiers.

Geneviève Baudoin 1 Martine Villegas 1 Martha Suarez 1 Antoine Diet 2 Fabien Robert 1
1 ESYCOM - Electronique, Systèmes de communication et Microsystèmes
2 L2S - Laboratoire des signaux et systèmes
Abstract : This paper deals with wireless multi-radio transmitter architectures operating in the frequency band of 800 MHz – 6GHz. As a consequence of the constant evolution in the communication systems, mobile transmitters must be able to operate at different frequency bands and modes according to existing standards specifications. The concept of a unique multiradio architecture is an evolution of the multistandard transceiver characterized by a parallelization of circuits for each standard. Multi-radio concept optimizes surface and power consumption. Transmitter architectures using sampling techniques and baseband  or PWM coding of signals before their amplification appear as good candidates for multiradio transmitters for several reasons. They allow using high efficiency power amplifiers such as switched-mode PAs. They are highly flexible and easy to integrate because of their digital nature. But when the transmitter efficiency is considered, many elements have to be taken into account: signal coding efficiency, PA efficiency, RF filter. This paper investigates the interest of these architectures for a multiradio transmitter able to support existing wireless communications standards between 800 MHz and 6 GHz.. It evaluates and compares the different possible architectures for WiMAX and LTE standards in terms of signal quality and transmitter power efficiency.
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Geneviève Baudoin, Martine Villegas, Martha Suarez, Antoine Diet, Fabien Robert. Performance Analysis of Multi-radio Transmitter with Polar or Cartesian Architectures associated with High Efficiency Switched-Mode Power Amplifiers.. RADIOENGINEERING, Czech and Slovak Technical Universities, 2010, 19 (4), pp.470-478. ⟨hal-00553234⟩

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