Three-way Power Research Articles

Unequal power division in sectoral dividers validated by FDTD

In techniques like the contour integral method, estimates of effective quantities must be used to indirectly account for fringing effects in sectors with arbitrary angles. Full-wave FDTD results accurately predicted the S-parameters, and the unequal power division of a three-way sectorial power divider.

A compact 1.7 - 2.1 GHz three-way power combiner using microstrip technology with better than 93.8% combining efficiency

This letter presents the design and measured performance of a microstrip three-way power combiner. The combiner is designed using the conventional Wilkinson topology with the extension to three outputs, which has been rarely considered for the design and fabrication of V-way combiners. It is shown that with an appropriate design approach, the main drawback reported with this topology (nonplanarity of the circuit when N > 2) can be minimized to have a negligible effect on the circuit performance and still allow an easy MIC or MHMIC fabrication.

A recombinant, in-phase power divider

A topology for a planar power divider suitable for realization using conventional microstrip fabrication techniques is described. This divider is capable of exciting an odd number of output ports with either equal or unequal power division. The recombinant approach produces bandwidth comparable to that of other techniques with fewer and more easily realized elements. Design equations and an example implementation are discussed. Measured data for an octave bandwidth, three-way power divider at 10 GHz are presented. >

Analysis and Design of Four-Port and Five-Port Microstrip Disc Circuits

A generalized method for evaluating the S-parameters of a multiport circular microstrip disc circuit is presented. The method is based on the planar circuit approach in which the two-dimensional Green's function of a circular segment is used. Three different applications of multiport circular disc structures are illustrated by designing, i) a broadband (44 percent bandwidth for |S/sub 11/| < 0.2) five-port network suitable for six-port network analyzers, ii) a broad-band three-way power divider with -3 dB, -6 dB, and -6 dB outputs, and iii) a four-port microstrip "cross-over." Experimental results verify the design methodology in all of these three cases.

A Y To Δ Transformation of a Three-Way Hybrid Junction

A three-way power divider/summer in the Wilkinson configuration can be symmetrically fabricated in stripline if the Y resistive balancing network is replaced by a /spl Delta/ resistive network. Port-to-port isolation in a stripline circuit at 2 GHz exceeded 27 dB; loss was below 0.15 dB.