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5.8 GHz band digital phase shifters to control a beam direction for an Active Integrated Phased Array Antenna (AIPAA) are designed. The 4-bit phase shifters with integrated GaAs FET SPDT switches are integrated with an LTCC substrate. We realized a low loss 4-bit LTCC phase shifter with the size of 10 mm ?? 13 mm ?? 0.55 mm. From the simulation results, the insertion loss of LTCC phase shifter without...
Wireless power transmission technology via microwave (microwave power transmission ; MPT) was advanced from 1960's and many researchers which had a dream to realize the space solar power satellite/station (SPS). In Japan, many kinds of the SPS were proposed and designed in recent ten years. We will show the newest Japanese SPS and its characteristics. We also show some results of the recent Japanese...
There are many sophisticated but high-cost radar systems. However, due to recent progress on wireless electronics technologies, some of them can be realized with compactness and low-cost. One example is a high performance active phased array antenna (APAA). The array antenna is strongly expected to realize in a field of mobile communication as well as that of wireless power transmission such as the...
Three-types of active integrated antenna array with a high power device and heat sink mechanism have been developed at 5.8 GHz. Two-stage and three-stage high power amplifier with output of about 2 w and 4 W respectively were used in the array. In the 32-element high power active integrated antenna array with 117 mm thick and 4 kg, the total output power of 120 W was achieved. Further, the thinner...
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