An LTCC Phase Shifter with an SPDT Switch for a 5.8GHz-Band Active Integrated Phased Array Antenna

Abstract

5.8 GHz band digital phase shifters to control a 2. Configuration beam direction for an Active Integrated Phased Array Antenna are designed. The 4-bit phase shifters with integrated GaAs Experimental data for the high performance the FET SPDT switches are integrated with an LTCC substrate. integrated GaAs FET SPDT switches with LTCC phase We realized a low loss 4-bit LTCC phase shifter with the size shifters were obtained. The AIA array consists of an of 10 mm x 13 mm x 0.55 mm. From the simulation results, the insertion loss of LTCC phase shifter without the switch is antenna part and a circuit part (the phase shifter and simulated with about 0.5dB/bit. The insertion loss of the driver / power amplifier circuits). In order to achieve LTCC phase shifter integrated with the GaAs FET SPDT stable operation condition as well as compactness, a switches and phase error are measured to be about 2.3dB/bit created circuit substrate method was developed for the and less than 15°, respectively. multi-stage high power amplifier. The operating Key words AIPAA, an LTCC Phase Shifter, an SPDT Switch frequency of the AIA is 5.8GHz. 1. Instruction 2.1 LTCC Commercially available phase shifters are usually Recent development on telecommunication systems expensive and bulky. A substrate with complex enables us to realize a high performance active phased micro-strip lines circuit fabricate by the LTCCarray antenna (APAA) system with low cost, technology are stratified in thin multi-layers and can be multifunction, and precise beam control in a field of a small size. It is therefore our goal to build a phase shifter mobile communication system. In order to meet the that occupies less space with satisfactory performance.

Experimental Demonstration of Coexistence of Microwave Wireless Communication and Power Transfer Technologies for Battery-Free Sensor Network Systems

“…We previously proposed a 4-bit digital phase shifter [24] and active integrated phased array antenna with beam steering capability [25] for effective use of microwave energy, since propagation loss is large compared to other WPT configurations.…”