Quarter Wavelength Resonator Partial H-plane Filter

Abstract

A compact partial H-plane filter consisting of quarter wavelength resonators is proposed. The previously proposed partial H-plane filter [1] has the same pass-band responses as those of conventional E-plane filter, while its cross section is one quarter. The proposed filter in this paper is designed by utilizing quarter wavelength resonator, so its total length is further reduced and its spurious responses are improved. The filter is fabricated with coax to partial H-plane waveguide transition in H-band. Measured results are in good agreement with computed results.

Can a Wormhole Generate Electromagnetic Field?

“…It is anticipated that this model would explain some bizarre phenomenon processes in the universe like the gamma ray bursts. Finally, the analysis performed in this paper can be extended to charged coupled with rotating wormholes as well [20]. It would also be worth exploring the same procedure for the general class of traversable wormholes solutions derived in [21].…”

Coaxial End-Launched and Microstrip to Partial <formula formulatype="inline"><tex Notation="TeX">$H$</tex></formula>-Plane Waveguide Transitions

“…The prototype was realized with 6 mm side walls, a 1 mm thick partial H-plane vane and a total internal length of 237 mm. A vane thickness of 1 mm was used over the 0.5 mm [3]- [5] thickness previously used as it provided more mechanical stability and did not negatively influence the full band performance of the waveguide. A photo of the prototype is given in Fig.…”

Dispersion Characteristics of Partial H-Plane Waveguides

“…Recently, to overcome this problem, the partial H-plane waveguide as a folded waveguide having a one-quarter crosssection compared to that of the conventional waveguide was presented [1]. Afterwards, many structures such as filters [2][3][4], and antennas [5,6] were designed based on partial H-plane waveguides. Nowadays, these structures are being extensively used in substrate integrated waveguide topology [7].…”