Abstract:
There is provided a method, including obtaining information indicating at least one reference characteristic; obtaining input data, the input data relating to the output of the tunable filter; determining, based on the input data, at least one characteristic of the tunable filter; upon detecting that the at least one determined characteristic does not match with the at least one reference characteristic, determining tuning instructions for the tunable filter; and applying the tuning instructions in adjusting the tunable filter.
Abstract:
The present invention relates to a waveguide E-plane filter component comprising a first and second main part (2) with a corresponding first and second waveguide section part (3). The main parts (2) are mounted to each other, such that a waveguide arrangement is formed. The waveguide arrangement has a height and a width. The waveguide E-plane filter component further comprises at least one electrically conducting foil (10, 11) that is placed between the main parts (3), said foil comprising a filter part (25) with apertures (12a, 12b, 12c, 12d). Each pair of adjacent apertures is separated by a corresponding foil conductor (13a, 13b, 13c) of which at least one is constituted by a tuning foil conductor (13a) that has a first, second and third part (14, 16, 18) with a corresponding first, second and third width (15, 17, 19).
Abstract:
A transverse magnetic (TM) mode dielectric filter includes an enclosure, a dielectric resonator, a main cover, and an elastic component, where the dielectric resonator is disposed in a resonant cavity of the enclosure; the main cover is secured between the elastic component and an open end of the enclosure; the elastic component includes multiple elastic flaps; the multiple elastic flaps are evenly distributed around an axial direction of the dielectric resonator; one end of each of the elastic flaps is fixedly connected to the main cover, and free ends of the elastic flaps elastically act on a central part of an outer surface of the main cover, to provide an elastic force towards the dielectric resonator. The evenly distributed multiple elastic flaps produce a pressure towards the dielectric resonator so that a uniform and stable pressure is produced around the dielectric resonator, to ensure a uniform current density inside the resonant cavity. In this way, intermodulation performance can be greatly improved and kept stable in a long term; the main cover fits with the enclosure and the dielectric resonator in an adhering manner; and the elastic component is disposed on the outer surface of the main cover, the elastic component does not need to be electroplated, and high precision is not required, thereby reducing processing costs.
Abstract:
Embodiments of the present invention provide a TEM mode dielectric filter and a manufacturing method thereof. The mode dielectric filter provided by the present invention includes a dielectric body (1) and a silver plating layer (2), where the silver plating layer covers a surface of the dielectric body, and a dielectric constant of the dielectric body is less than or equal to 21. The TEM dielectric filter provided by the present invention has a large energy storage space in a single resonant cavity of a dielectric material, and has a high quality factor. An insertion loss of the TEM dielectric filter is low, and electrical conductivity of the silver plating layer is high.
Abstract:
A highly compact bandpass filter that has excellent mechanical strength is disclosed. A bandpass filter according to the present invention employs a dielectric block of substantially rectangular prismatic shape constituted of a first portion lying between a first cross-section of the dielectric block and a second cross-section of the dielectric block substantially parallel to the first cross-section and second and third portions divided by the first portion and metal plates formed on surfaces of the dielectric block. The first portion of the dielectric block and the metal plates formed thereon are enabled to act as an evanescent waveguide. The second portion of the dielectric block and the metal plates formed thereon are enabled to act as a first resonator. The third portion of the dielectric block and the metal plates formed thereon are enabled to act as a second resonator. The metal plates include an inductive stub formed on the surface of the first portion of the dielectric block.
Abstract:
A highly compact and easily fabricated band pass filter is disclosed. A band pass filter according to the present invention employs a first half-wave (λ/2) resonator having a first open end on which an input terminal is formed and a second open end opposite to the first open end, a second half-wave (λ/2) resonator having a third open end on which an output terminal is formed and a fourth open end opposite to the third open end, and an evanescent waveguide interposed between the second open end of the first resonator and the fourth open end of the second resonator. The first half-wave (λ/2) resonator, the second half-wave (λ/2) resonator, and the evanescent waveguide being single-unit. An air gap does not have to be formed by mounting components on a printed circuit board. Therefore, the overall size of the band pass filter can be miniaturized and fabrication of the band pass filter is simplified.
Abstract:
A high frequency electrode (1) includes a main conductor (20) and at least two sub-conductors (21-23) formed along a side of the main conductor (20). The sub-conductors (21-23) are formed so that a sub-conductor thereof positioned nearer to the outside has a smaller width.