Wideband coupled resonator based ultra-wideband 3dB power divider
In this paper, a 3dB ultra-wideband (UWB) power divider has been designed using three wide-band coupled resonators. The resonator unit which consists of symmetric interdigital coupled input/output lines, resonates in two basic for broadening the operating bandwidth. Output ports maintains equal distance from the input in order to achieve in-phase power divisions. The prototype structure provides an equal magnitude, in-phase power division and adequate isolation at outputs from 3.82 to 10.2 GHz, which almost complies the FCC defined UWB frequency range. It has advantages like single layer, via free and compact in size.
Compact Ultra-Wideband In-Phase Multilayer Power Divider
A novel compact ultra-wideband (UWB) in-phase multilayer slotline power divider with high isolation is presented as a complement in slotline power divider field. The new structure proposed in this paper overcomes the shortcoming that power divider based on slotline almost cannot obtain high isolation between output ports. Based on the equivalent-circuit of microstrip-to-slotline transition and the method of odd-mode and even-mode analysis, the designing expressions of the proposed compact power divider have been obtained. The simulated and measured results have shown good agreement, and both of which have also shown that all the ports of the novel compact in-phase power divider have good impedance matching, and shown high isolation between the output ports over the band 3.4 GHz-12 GHz.
Compact Two-Way and Four-Way Power Dividers Using Multi-Conductor Coupled Lines
In this letter, new two-way and four-way power dividers are proposed using quarter-wave long multi-conductor coupled lines. The design equations for a two-way power divider are derived by analyzing a three-conductor coupled line. Then, the structure is extended to propose a planar four-way power divider with compact size. The fabricated two-way and four-way power dividers at 2.0 GHz show an excellent performance in the insertion loss, impedance matching at all ports and isolation between output ports.