Quantum mechanics

Electric power transmission

Port (circuit theory)

Wilkinson power divider

Engineering

Division (mathematics)

Current divider

Biology

Isolation (microbiology)

Power (physics)

Computer science

Power dividers and directional couplers

Physics

Microstrip

Wideband

Mathematics

Microbiology

Electronic engineering

Frequency divider

Topology (electrical circuits)

Arithmetic

Electrical engineering

IEEE Transactions on Microwave Theory and Techniques

In this article, a novel topology is proposed to design a class of power dividers with the simultaneous realization of wideband power division and port-to-port isolation. On the one hand, in order to achieve a wideband power dividing response, two wideband filtering branches, including multimode resonators and parallel-coupled lines, are formed to replace the quarter-wavelength impedance transformers in the Wilkinson power divider. On the other hand, two output ports are at first electrically connected in shunt, stretched by quarter-wavelength transmission lines and then shunt-connected via one resistor, aiming to achieve the highly desired wideband port-to-port isolation. After the theoretical analysis on frequency responses of power division and port-to-port isolation is carried out, a prototype power divider on the microstrip-line structure is designed and fabricated. Good agreement between the simulated and measured results is obtained, exhibiting an extremely wide operating band of 78% fractional bandwidth, over which 3 ± 0.3-dB power division and 17.5-dB port-to-port isolation have been simultaneously achieved.

Proposal and Design of a Power Divider With Wideband Power Division and Port-to-Port Isolation: A New Topology