Title :
Analysis of 2.45 GHz 4-bit hybrid-coupled phase shifter for phased arrays
Author :
Salonen, Pekka ; Jokinen, Perttu ; Keskilammi, Mikko ; Sydänheimo, Lauri
Author_Institution :
Inst. of Electron., Tampere Univ. of Technol., Finland
Abstract :
A complete analysis of 4-bit branchline hybrid coupled phase shifter for a phased array antenna operated in a Bluetooth access-point is presented. The analysis is based on the transmission line equivalent model which does not take account the losses of the substrate material. The analysis includes the performance of the cascaded phase shifters with different phase bit combinations. Different values for impedance on the reflective network are allowed for having an additional degree of freedom. Based on the theoretical results a 4-bit hybrid coupled phase shifter is fabricated. The results of theoretical analysis agree well with the results obtained from the measurements
Keywords :
antenna phased arrays; packet radio networks; phase shifters; wireless LAN; 2.45 GHz; Bluetooth access-point; WLAN; cascaded phase shifters; hybrid coupled phase shifter; impedance; performance; phased array antenna; reflective network; transmission line equivalent model; Antenna arrays; Bluetooth; Digital control; Master-slave; Performance analysis; Personal area networks; Phase shifters; Phased arrays; Telephony; Wireless LAN;
Conference_Titel :
TENCON 2001. Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology
Print_ISBN :
0-7803-7101-1
DOI :
10.1109/TENCON.2001.949651
