Microwave Transmission System The new transmitter system will be used to radiate a steady monochomatic microwave at 2.45 GHz. The transmitting antenna consists of four antenna paddles, each mounting 18 microstrip antennas. The antenna paddles are deployed in the shape of a cross on top of the mother section. The transmitting power and gain of the phased-array antenna will be 936 W and 26 dB, respectively. Figure 5 shows the calculated radiation pattern for the transmitter antenna. The region of highest intensity is an elongated oval shape with large side-lobes. The antenna paddle has a sandwich structure of three layers: the microstrip antennas, ground and FET amplifiers as shown in Fig. 6.
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