DESIGN OF T-SPLIT POWER DIVIDERS USING DUMBBELL SHAPED DGS
1Tamasi Moyra, 2Susanta
Kumar Parui, 2Santanu Das
1Department of Electronics and
Communication Engineering,
National
Institute of Technology, Agartala
2Department of Electronics and
Telecommunication Engineering,
Bengal
Engineering and Science University, Shibpur,
Howrah
– 711 103, INDIA
Received
August 3, 2012
Abstract. Power dividers and power
combiners are passive microwave components for power dividing and power
combining. In this paper attention has been given towards the implementation of
equal power divider using conventional 50 microstrip
line and dumbbell shaped defected ground structures (DGS). DGS increase the
effective inductance and capacitance of the line, supporting slow-wave
propagation. Thus, it increases the effective line impedance of the microstrip
line. Consequently, all passive and active components that are implemented
using DGS have a miniaturized size compared to conventional components. In this
paper one 3 dB or equal power divider has been implemented at 1.2 GHz in the
first step. In the next part of the paper, one unequal power divider of
dividing ratio 2:1 has been designed using DGS with microstrip line. Those dividers have wide
applications in microwave circuits and feeds of array antennas.
Keywords: microstrip, defected ground structure,
equal power divider, unequal power divider.
Аннотация. Предложена и исследована
конструкция микрополоскового симметричного (3дБ) и несимметричного (2:1)
делителя мощности. Для согласования делителей используется отверстие в подложке
в форме гантели. Неоднородность увеличивает эквивалентную индуктивность и
улучшает согласование.
Ключевые слова: микрополосковая линия,
неоднородная подложка, симметричный делитель мощности, несимметричный делитель
мощности.