Title :
Four bit phase shifter for the L band
Author_Institution :
Telecommun. Res. Inst., Gdansk
Abstract :
A four bit phase shifter for a phased array has been described. The phase shifter has been realised in a hybrid MIC technique with PIN diodes used as switching elements. The circuit consists of three bits realised as a periodically loaded line and one based on a hybrid 3 dB coupler. The three first bits have special tuning elements for the fine tuning of the required phase shift. The phase shift error was not greater than 3 degrees. Average loss was about 1.5 dB, while maximum amplitude unbalance was 0.3 dB
Keywords :
UHF antennas; UHF integrated circuits; UHF phase shifters; antenna accessories; antenna phased arrays; circuit tuning; hybrid integrated circuits; microwave integrated circuits; p-i-n diodes; semiconductor switches; 1.5 dB; L-band; PIN diode switching elements; four bit phase shifter; hybrid 3 dB coupler; hybrid MIC technique; periodically loaded line; phased array; tuning elements; Circuit optimization; Coupling circuits; Dielectric substrates; Diodes; Frequency estimation; Impedance; Microwave integrated circuits; Phase shifters; Phased arrays; Switches;
Conference_Titel :
Microwaves and Radar, 1998. MIKON '98., 12th International Conference on
Conference_Location :
Krakow
Print_ISBN :
83-906662-0-0
DOI :
10.1109/MIKON.1998.740927
