A method and system for using half-duplex base stations and half-duplex nodes in a Frequency Division Duplexing region to provide wireless connectivity between the half-duplex base stations and customers in multiple sectors of a cell. The solar collector may have a primary collecting mirror, a second reflecting mirror, and a solar collector positioned adjacent to the primary mirror. Deployment and retraction of the tine is controlled by the rotation of a stylet releasable connected to the tine. An amplitude control circuit stabilizes the amplitude of the sixth signal to a predetermined target value, and generates its absolute value, thus generating a seventh signal. A silicon intermediate layer sandwiched between a metal aperture layer and a dielectric layer has been found to offer a good combination of low optical loss combined with superior mechanical properties.