A COMPACT 2-WAY MULTISECTION POWER DIVIDER FOR BROADBAND OPERATIONS

Abstract

This paper represents a broadband 2-ways Wilkinson power divider for S-, C- and X-bands applications. The broadband design is proposed by dint of a multisection Wilkinson power divider topology with utilizing the microstrip technology on a single layer printed circuit board. The proposed design has a 7-sections to achieve an operating frequency bandwidth of 2-12 GHz. The surface mount resistors are utilized in the design to enhance the isolation between the output ports. In addition, a prototype of the proposed design is manufactured on a Rogers 4003C and the 0402 package surface mount resistors are soldered between the output ports of each section. The prototype has input reflection coefficient better than -15 dB, -20 dB and -10 dB in the S-band (2-4 GHz), C-band (4-8 GHz) and X-band (8-12 GHz), respectively. Moreover, the prototype has output reflection coefficients better -17 dB, -20 dB and -10 dB in the S-band, C-band and X-band, respectively. The measured insertion loss is less than -5 dB. Furthermore, the isolation between the output ports is better than -10 dB, -17 dB and -15 dB in the S-band, C-bands and X-band, respectively. Furthermore, the total phase variation between the output ports are less than 1.8° in the operating frequency bandwidth of 2-12 GHz. The prototyped multisection 2-way power divider illustrates a broadband characteristic with better phase imbalance and the measurement results are in good agreement with the simulation results. The total size of the prototype is 4x41 mm.

Özet

This paper represents a broadband 2-ways Wilkinson power divider for S-band (2-4 GHz), C-band (4-8 GHz) and X-bands (8-12 GHz) applications. The broadband design is proposed by dint of a multisection Wilkinson power divider topology with utilizing the microstrip technology on a single layer printed circuit board. The proposed design has a 7-sections to achieve an operating frequency bandwidth of 2-12 GHz. The surface mount resistors are utilized in the design to enhance the isolation between the output ports. In addition, a prototype of the proposed design is manufactured on a Rogers 4003C and the 0402 package surface mount resistors are soldered between the output ports of each section. The prototype has input reflection coefficient better than -15 dB, -20 dB and -10 dB, respectively in the S-, C-, X-bands. Moreover, the prototype has output reflection coefficients better -17 dB, -20 dB and -10 dB, respectively in the S-, C- and X-bands. The measured insertion loss is less than -5 dB. Furthermore, the isolation between the output ports is better than -10 dB, -17 dB and -15 dB, respectively in the S-, C- and X-bands. Furthermore, the total phase variation between the output ports are less than 1.8° in the frequency range from 2 to 12 GHz. The prototyped multisection 2-way power divider illustrates a broadband characteristic with better phase imbalance and the measurement and simulation results are close to each other. The total size of the prototype is 4x41 mm2.

Keywords: Wilkinson power divider, broadband, multisection, coupled line, compact