*Associate Professor, Department of ECE, PSG College of Technology, Coimbatore, India
**Assistant Professor, Department of ECE, PSG College of Technology, Coimbatore, India
***Student, M.E Communication Systems, Department of ECE, Thiagarajar College of Engineering, Madurai, India
Online published on 12 January, 2017.
This paper proposes a new miniaturized 3-bit loaded line phase shifter for 2.45 GHz WLAN applications. The design use Koch fractal curves to reduce the size of the conventional loaded line phase shifter. The concept has been tested at 2.45 GHz on FR-4 dielectric material using microstrip technology. The phase error for the 8 phase states is not greater than 2.16degrees at the designed center frequency of 2.45 GHz, and the insertion loss for the 8 phase states is 2.63 dB±0.49dB over the operating bandwidth of 2.4 to 2.5 GHz. The performance can be further improved by using lower loss dielectric material.
