Time-modulated reflector array

The concept of a time-modulated reflector array (TMRA) is introduced and analysed. The TMRA is proposed as an alternative to conventional time-modulated array designs. The TMRA is potentially much simpler to implement in hardware than the conventional time-modulated array as it does not require a complex feed network. The results of a simple analysis of a TMRA based on an array-factor model combined with Fourier-series theory is presented to illustrate the basic operation of the system and to show that the TMRA exhibits similar characteristics to conventional time-switched arrays. A more realistic TMRA based on pin diode controlled dipole elements is also modelled using a full-wave electromagnetic simulator and the performance of this system is compared to that obtained from array-factor theory.