A compact phase shift unit for analogue beamforming

Publisher:
IEEE
Publication Type:
Conference Proceeding
Citation:
Antenna Technology:" Small Antennas, Novel EM Structures and Materials, and Applications"(iWAT), 2014 International Workshop on, 2014, pp. 93 - 95
Issue Date:
2014-11-20
Full metadata record
Files in This Item:
Filename Description Size
06958605.pdfPublished version162.37 kB
Adobe PDF
A novel phase shift unit for analogue beamforming is proposed. It is based on a defected microstrip structure (DMS). The DMS unit has a phase shift of 15° with insertion losses below 0.5 dB at 5.2 GHz. It is etched on a 50 Ohm conventional microstrip line and the length of which is only 0.07 wavelengths long. Due to the low insertion loss and compact size, the DMS units can be easily cascaded to realize a higher phase shift. As an example, a 1-bit phase shifter made by cascading 3 DMS units is designed. It has a phase shift of 45°±1.8° with the insertion losses still below 0.5 dB across the 5.2 GHz band (5.15 GHz to 5.35 GHz). The phase shifter design based on DMS is compact, low cost, and easy to be fabricated and integrated in microstrip systems. Therefore, it provides a low cost solution for analogue beamforming which usually employs a large number of phase shifters.
Please use this identifier to cite or link to this item: