Low loss Multi-Port Power Divider for BSA Application

Abstract

This paper presents a multiport power divider for base station antenna application. Over these years, power dividers have been changing their structures and technology in order to be compatible with the newer changes adopted in designing of communication systems. From being operated as a single-frequency component to being flexible with dual-frequency bands, Wilkinson power dividers have come a long way to become an important and integral part of various RF/microwave devices. The recent technologies for cellular communication have motivated researchers to work on miniaturization and harmonic suppression of power dividers to make them more compact and efficient. Both equal and unequal power dividers are largely employed for L and S-Band applications (GSM, CDMA, Personnel communication systems). S- Parameters such a return loss, insertion loss and isolation between output ports plays an important role in their designing.In this paper the sector microstrip multiple port power dividers is analyzed by using the fullwave finite element method. Design a new type power divider with different geometrical and physical parameters namely the substrate dielectric constant, substrate height and power divider radius. The maximum error in calculating the centre frequency of the power divider does not exceed. 10-port, 7-port, 5-port, 4-port and 3-port, sector microstrip power dividers are realized on epoxy substrates using PCB fabrication. Good agreement is found between the experimental and numerical results obtained from both the finite element method and the ready-made software package HFSS.