High-receiving-sensitivity 70-GHz band MMIC transceiver: application of receiving-module-arrayed self-heterodyne technique

The use of our proposed millimeter-wave self-heterodyne transmission technique is a simple and cost-effective way of solving frequency stability problems in constructing millimeter-wave access systems. However, there has been degradation in receiving sensitivity compared to conventional methods. We report how our newly developed 70-GHz-band transceiver using the millimeter-wave self-heterodyne transmission technique with a receiving module array can greatly improve the receiving sensitivity without affecting the signal reception beam pattern.