Title :
Low cost 5-bit phase shifter for DBS phased array antennas
Author :
Kamenopolsky, Stanimir D.
Author_Institution :
Dept. of RF & MW Design, Sky Gate Ltd., Sofia, Bulgaria
Abstract :
A low cost patent pending 5-bit digital phase shifter has been developed for application in DBS receiving phased array antennas. New simplified loaded line architecture of less significant bit is proposed. The new circuit mitigates PCB technology limitations and reduces the number of switching components, which are low cost discrete p-HEMT FETs. TRL measurement technique was employed for extraction of the cold FET two states parameters. The digital 5-bit phase shifter operates in full satellite TV band from 10.7 to 12.75 GHz and has following main parameters: insertion loss 6dB, insertion loss deviation ±1.4dB, average RMS phase error 3° and worst-case input/output return loss 11dB. The control of the device is CMOS(5V) compatible with setting time less than 70ns.
Keywords :
antenna phased arrays; direct broadcasting by satellite; phase shifters; receiving antennas; 10.7 to 12.7 GHz; 11 dB; 5 V; 5 bits; 6 dB; DBS phased array antennas; PCB technology; TRL measurement technique; digital phase shifter; direct broadcasting by satellite; input-output return loss; insertion loss; loaded line architecture; p-HEMT FET; satellite TV band; switching components; Antenna arrays; Costs; FETs; Insertion loss; Measurement techniques; Phase shifters; Phased arrays; Receiving antennas; Satellite broadcasting; Switching circuits;
Conference_Titel :
Microwave Conference, 2003. 33rd European
Print_ISBN :
1-58053-834-7
DOI :
10.1109/EUMC.2003.1263011
