A hybrid RF-analog/digital approach for terminal-side array antenna systems

This paper proposes a hybrid RF-analog/digital approach for terminal-side array antenna systems, where lower power consumption is required. Assuming an orthogonal frequency division multiplexing (OFDM)-based wireless local area network standard, the bit error rate (BER) performance of two types of array antenna is discussed, such as an adaptive array antenna and a phased array antenna and the trade off is shown between the attainable BER performance and the number of control parameters. Furthermore, analog device-specific effects are also discussed such as phase shift error and phase resolution required.