We present the design and characterization of an innovative D-band transmitting antenna system. It comprises an active focal-plane array with two separate antennas which radiate two different signals, with adjacent bands, generated by an integrated circuit, and a flat discrete lens. The lens is designed to form a high-directivity broadside beam in both bands, i.e. from 139.3 GHz to 156.6 GHz. The use of two narrowband signals enhances the spectral efficiency and power consumption. Measurements show a remarkable improvement of transmitted power with respect to similar transmitters performing channel aggregation with guided components. The effective isotropic radiated power is higher than 25 dBm in a relative bandwidth of 11% and attains a peak value of 30.5 dBm. The measured radiation patterns are stable with frequency in each of the two sub-bands. The estimated antenna gain of the system (about 26 dBi) is in tight agreement with numerical data.
No takes yet. Share an insight, caveat, or question.
Manzillo et al. (2024) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: