Design of Two Two-Way Out-of-Phase Slotline Power Divider in C-Band

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INTERNATIONAL JOURNAL FOR TRENDS IN ENGINEERING & TECHNOLOGY

VOLUME 3 ISSUE 1 –JANUARY 2015 - ISSN: 2349 - 9303

Design of Two Two-Way Out-of-Phase Slotline Power Divider in C-Band S.Sindhu mathy1 1

Dr.Mahalingam College of Engineering and technology, Department of ECE sindhumathy91@gmail.com

D.Venkatesh2 2

Dr.Mahalingam College of Engineering and technology, Department of ECE mailz4venki@gmail.com

Abstract— Power divider is one of the major components of radio frequency circuits. In this paper two two-way out-of-phase slotline power dividers designed was presented in a microstrip platform. The power dividing circuit, low profile is designed at compact size structure. To provide better isolation at the two output ports microstripline is bent and a slotline is provided. The design is simulated using ADS, results substantiate low insertion loss, better isolation and amplitude balancing at the output ports. Index terms—Amplitude balance, ADS, compact, isolation, out-of-phase power divider.

I. INTRODUCTION Power dividers/power combiners are passive devices. In power dividers the input signal at port-1 splits equally between output ports -2 and 3. It is used in the field of communication. Power dividers and directional couplers are essentially the same class of device. Two port equal power divider will provide half the input power at each of its output ports – a 3 dB divider.

It is also possible to use other forms of transmission line (e.g. coaxial cable) or lumped circuit elements (inductors and capacitors). Out of different types of power dividers, slotline power dividers provide wide bandwidth, low insertion loss, good amplitude balance at the output ports and reasonable isolation among the output ports (for the power divider with isolation improvement) [12]. This paper is organized as follows. Chapter 2 deals with system model. In chapter 3 design and simulation of fourway out-of-phase slotline power dividers. Results and discussions are dealt in Chapter 4. Conclusions are given in Chapter 5.

II. TWO TWO-WAY OUT-OF-PHASE SLOTLINE POWER DIVIDER Fig. 1. Power dividers Power dividers are widely used in wireless/wired communication systems such as Array Antennas ,mixers, phase shifters, modulators, phased array radar antenna systems, monitoring, feedback, combining feeds to and from antenna, antenna beam forming, providing taps for cable distributed systems such as cable TV, separating transmitted and received signals on telephone lines. The Wilkinson power divider is a class of power divider circuit that can achieve better isolation between the output ports while maintaining a matched condition on all ports. The Wilkinson design can also be used as a power combiner because it is made up of passive components and hence reciprocal. It uses quarter wavelength transformers, which can be easily fabricated as quarter wave lines on printed circuit boards.

IJTET©2015

A Two two-way out-of-phase slotline power divider consists of a λ/2 slotline. The equivalent circuit four-way outof-phase slotline power divider is shown in Fig. 2.

Fig. 2. Equivalent circuit of the four-way slotline Power divider

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