Compact In-phase Power Divider Research Articles

Wideband in-phase slot-coupled power dividers

A compact in-phase power divider is introduced. The proposed power divider consists of three metallic layers and two dielectric layers. The electromagnetic energy is coupled from a rectangular-shaped patch placed on the top layer of the structure to two one-half rectangular-shaped patches placed on the bottom layer of the structure through a rectangular-shaped slot cut into the common ground plane. It is shown that the bandwidth of the power divider can be controlled by the coupling value between the patches. Designing a sample of the proposed power divider for covering frequency range of 1–3.5GHz is done. The simulation and measurement results of the designed power divider indicate the effectiveness of the proposed power divider.

Compact in‐phase power divider integrated filtering response using spiral resonator

A compact in-phase power divider with filtering response is presented in this study. Spiral resonators are meant to realise compact size and bandpass-filtering response. To improve the frequency selectivity of the presented power divider, a source–load cross-coupling is introduced by placing input and output coupling lines. An in-phase power divider with passband-filtering response has been designed, fabricated and measured. The measured return loss and insertion loss of the fabricated power divider are 22 and 1.3 dB at 2.45 GHz, respectively. The 3 dB operating bandwidth of the fabricated power divider is 175 MHz. The total area of the fabricated power divider is 0.15λ g × 0.3λ g. The measured results verify the predicted attractive features.

Ultra‐wideband in‐phase power divider using stepped‐impedance three‐line coupled structure and microstrip‐to‐slotline transitions

A compact in-phase power divider utilising a stepped-impedance three-line coupled structure and microstrip-to-slotline transitions is presented. The equivalent circuit of the structure is used to predict the required dimensions for ultra-wideband performance. The length of the structure, excluding the input/output ports needed for the measurements, is around a quarter guided wavelength. The simulated and measured results for the two developed devices indicate equal in-phase power division with less than 0.1 dB and 2° amplitude and phase imbalances, respectively. The return loss at the three ports is more than 15 dB in one prototype, whereas the isolation is more than 13 dB in the other across the band from 3.1 to 10.6 GHz.

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.

Design of compact inphase power divider with one narrow notch band for UWB application

A novel multilayer inphase power divider with ultra-wideband behaviour and a sharply rejected notch band is presented. The proposed power divider employed a broadside coupling structure via a multilayer slot configuration and a single isolation resistor. One notch band is obtained by introducing one coupled folded stepped impedance resonator with metalised via hole to ground. Simulated and measured results show that the proposed power divider has equal power division with high stability of phase, low insertion loss and good return loss at the three ports across the band 2.7 to more than 11.0 GHz.