Analysis and design of compact four‐way single‐ and dual‐band filtering power dividers on a new adjustable multi‐mode topology

Abstract

Four‐way single‐/dual‐band operation integrated filtering power divider (FPD) with new design topology is presented in this study. For either single‐ or dual‐passband response, it involves only one same‐type pair of multi‐mode resonators and three isolation resistors, comparing with other existing four‐way FPDs. By adopting the even‐/odd‐mode analysis method to flexibly control the resonant modes of the designed resonator and select isolation resistances, both single‐ and dual‐band four‐way filtering power division responses are specified and derived with the same one configuration. The proposed four‐way FPD designs stand out from the reported ones by both nice operation performance, flexible topology with reduced number of resonators, and no additional feeding network at input port. For demonstration, two prototypes for four‐way single‐ and dual‐band FPDs are implemented following the given design procedure, respectively. Both simulated and measured results are exhibited to verify the theoretical design concept.

Design of Bandpass Multiplexer-Integrated Power Dividers

“…In [26]- [28], wideband filtering PDs based on a parallel-coupled line structure were proposed; these PDs also achieved a satisfactory stopband response. In addition, [11], [13], [16]- [20], and [29]- [36] developed filtering PDs for dual-band applications. By assigning the resonance frequencies of one or more multimode resonators, filtering PDs with dual-band behavior have been created [11], [13], [16]- [20].…”

“…In addition, [11], [13], [16]- [20], and [29]- [36] developed filtering PDs for dual-band applications. By assigning the resonance frequencies of one or more multimode resonators, filtering PDs with dual-band behavior have been created [11], [13], [16]- [20]. In [29], [30], and [34], dual-resonance resonators were applied to design PDs with dual-band filtering responses.…”

Dual‐band filtering power divider with independent in‐band power split ratio using a single quad‐mode dielectric resonator

“…The circuit design can be also facilitated by studying the relation between even-/oddmode S-parameters and the generalized mixed-mode scattering matrix [15][16][17]. For a layout that is symmetric in orthogonal directions, two-level even-/odd-mode analysis is often applied [18]. To achieve an unequal power-dividing ratio, the impedances of output ports will be asymmetric.…”

“…In Zhang et al. [18], the synthesis of an equivalent circuit is achieved by a high‐order matrix, whereas optimization is not given. In Chi et al.…”

Novel single‐layer dual‐band half‐mode substrate integrated waveguide filter and filtering power dividers with very compact sizes

“…To meet the high integration, compact size, and low loss requirements, the filtering function and power splitting function integrate into a single component as filtering PD (FPD) to perform dual functions in a single unit. [11][12][13][14][15][16][17] Additionally, in order to achieve various wireless services, multifunctional devices are widely employed. Among them, the dual-band (DB) BPF and DB FPD are appropriate choices for the multi-band response which little researches have been done on the design of these components.…”