Abstract: A gapless ferrite structure for circulator or isolator includes a first base having a first flange and a first limit slot surrounded by the first flange, a second base having a second flange and a second limit slot surrounded by the second flange, a ferrite with two ends accommodated in the first limit slot and the second limit slot respectively, two limit magnets installed on the first base and the second base respectively and configured to be corresponsive to the ferrite to generate an attraction force on the ferrite, and two sealing units configured between an end of the ferrite and the first limit slot and between the other end of the ferrite and the second limit slot respectively. In this way, a gapless structure can be formed on a signal transmission path in a circulator or isolator.

Abstract: A cross-coupling structure for dielectric cavity filters includes a base and a tuner. The base is communicated with plural resonant cavities, a side through hole and a blind hole, and has a first channel formed between two adjacent resonant cavities which are not used for producing cross-coupling, and a second channel the resonant cavities formed between two adjacent resonant cavities which are used for producing cross-coupling. The side through hole is penetrated through the base and communicated with the second channel. The blind hole is formed on a wall of the second channel and has an opening facing the side through hole. The tuner is entered into the second channel from the side through hole and extended into the blind hole and can be adjustably moved between the opening of the blind hole and the bottom of the blind hole to set a cross-coupling amount target value.

Abstract: A gapless ferrite structure for circulator or isolator includes a first base having a first flange and a first limit slot surrounded by the first flange, a second base having a second flange and a second limit slot surrounded by the second flange, a ferrite with two ends accommodated in the first limit slot and the second limit slot respectively, two limit magnets installed on the first base and the second base respectively and configured to be corresponsive to the ferrite to generate an attraction force on the ferrite, and two sealing units configured between an end of the ferrite and the first limit slot and between the other end of the ferrite and the second limit slot respectively. In this way, a gapless structure can be formed on a signal transmission path in a circulator or isolator.

Abstract: A cross-coupling structure for dielectric cavity filters includes a base and a tuner. The base is communicated with plural resonant cavities, a side through hole and a blind hole, and has a first channel formed between two adjacent resonant cavities which are not used for producing cross-coupling, and a second channel the resonant cavities formed between two adjacent resonant cavities which are used for producing cross-coupling. The side through hole is penetrated through the base and communicated with the second channel. The blind hole is formed on a wall of the second channel and has an opening facing the side through hole. The tuner is entered into the second channel from the side through hole and extended into the blind hole and can be adjustably moved between the opening of the blind hole and the bottom of the blind hole to set a cross-coupling amount target value.

Abstract: The present invention discloses a new single polarized array waveguide antenna adapted to be configured above a signal processing substrate, and including an antenna array substrate and a waveguide body. The antenna array substrate includes a plurality of antenna units, each of which having a coupling portion and an impedance matching portion. The waveguide body is configured above the antenna array substrate, and includes a plurality of waveguide channels passing through the waveguide body. Each waveguide channel has a first ridge and a second ridge projecting from wall surfaces and arranged opposite to each other. The first ridge has a first lower withdrawn edge on a lower section of the waveguide channel, and the second ridge has a second lower withdrawn edge on the lower section of the waveguide channel.

Abstract: The present invention discloses a new dual polarized array waveguide antenna configured above a signal processing substrate and sequentially including an antenna array substrate, a coupling substrate and a waveguide body. The antenna array substrate includes a plurality of patches, each of which having a first coupling portion and a second coupling portion coupled to the signal processing substrate. The top surface of the coupling substrate includes a plurality of coupling pads corresponding to the patches, and each coupling pad is configured above an intersection area of the first coupling portion and the second coupling portion. The waveguide body includes a plurality of waveguide channels passing through the waveguide body and corresponding to the coupling pads. Each waveguide channel has a first ridge pair and a second ridge pair projecting from wall surfaces.

Abstract: A novel miniaturized horizontal split-wave orthomode transducer includes a common channel portion, a first polarized channel portion and a second polarized channel portion, and the centers of the openings of the first polarized channel and the second polarized channel are coaxially and respectively arranged on two opposite sides of the common channel portion to save the bend and extended structure at the rear end of the horizontal split-wave orthomode transducer and also save the occupied space since there is no need to guide signals in one of the polarization directions to the rear and return the signals, so as to further achieve the effects of improving the flexibility of installing the transducer, providing a good isolation between electromagnetic signals in different polarization directions and preventing the interference occurred between the electromagnetic signals.

Abstract: A non-contact frequency automatic tuning filter with an antileakage chamber includes a first casing with a first cavity formed at a first opening of the first casing, a moving part, and a second cavity. The second cavity has a second casing, a chamber formed in the second casing, and second and third openings penetrating through the second casing. The moving part is plugged from the third opening into the first cavity or from the third opening into a space between the third opening and the first cavity. The second opening proximate to the moving part constitutes a part of the chamber. The second casing has a spacing portion proximate to the moving part for separating the moving part and chamber. The first and second casings are not in contact with the moving part. The invention can prevent leakage of electromagnetic waves and unstable frequency shifting.

Abstract: A millimeter wave filter fine-tuning structure includes a resonant cavity, a fine-tuning cavity disposed at the edge of the resonant cavity, a fine-tuning cavity coupled to the resonant cavity, and plural adjusting screws disposed and inserted in the fine-tuning cavity, and the distance between the adjusting screws and the resonant cavity may be used to adjust the resonant frequency of the filter.

Abstract: Disclosed is an indirect transmission type automatic frequency modulation filter including a microwave body, a moving plate, a fastener, and a motor unit. The microwave body has plural openings. The moving plate includes a board, plural lugs and a first moving member, and the lugs and the first moving member form the board. The fastener includes a support base and a second moving member. The motor unit includes a rod and a driver, and the driver determines a clockwise rotation or a counterclockwise rotation and drives the rod to move the moving plate towards or away from the microwave body so as to insert the lugs into cavities to a desired depth and adjust a center frequency.

Abstract: A cavity filter having two series of resonance chambers bilaterally connected between an antenna port and two opposing signal input/output ports in a resonant space therein, each series of resonance chambers having the last resonance chamber thereof connected to the antenna port and the first resonance chamber thereof connected to the respective signal input/output port and kept in communication with the associating last resonance chamber through one respective channel and the second resonance chamber thereof kept in communication with the last second resonance chamber thereof through one respective channel to provide cross-coupling feedback, getting better stop-band flatness and improving signal quality.

Abstract: A high-order harmonic device of a cavity filter including a base and a lid cover the base is disclosed. The base has a through groove connecting to an upper and a lower portion. The base has a plurality of output terminal with metallic conductor extending into the inner side formed on the surface of the sidewall. The base has resonance space formed indented to receive the metallic conductor and extending to connect to the through groove. The lid has a plurality of threading holes formed corresponding to chambers and partitions received with adjusting elements for height adjustment. The adjusting elements has the resonance bars corresponding to every chamber and the suppressing bars corresponding to every partition. By adjusting suppressing bar and the partition to a predetermined distance, the space of the channel for transmitting the high-order harmonic wave can be reduced to suppress noise produced by high-order harmonic wave.

Abstract: A cavity filter includes a base member defining therein a resonant chamber, an antenna port disposed at the center of the resonant chamber, two signal input/output ports respectively disposed at two distal ends of the resonant chamber for signal input/output, a cover member covering the base member, two feedback channels disposed in the base member at two opposite lateral sides relative to the resonant chamber and respectively connected between the signal ports and the antenna port, and wave-absorbing components respectively mounted in the feedback channels for removing surge waves from feedback frequency components in the feedback channels.

Abstract: A cavity filter having two series of resonance chambers bilaterally connected between an antenna port and two opposing signal input/output ports, each series of resonance chambers having the last resonance chamber thereof connected to the antenna port and the first resonance chamber thereof connected between the respective signal input/output port and the associating last resonance chamber to perform cross-coupling feedback, improving the quality of the signal received by the signal receiver using the cavity filter and enhancing signal transmission performance.

Abstract: A cavity filter having two series of resonance chambers symmetrically and bilaterally connected between an antenna port and two opposing signal input/output ports in a resonant space therein, each series of resonance chambers having the last resonance chamber thereof connected to the antenna port and the first resonance chamber thereof connected to the respective signal input/output port and kept in communication with the associating last resonance chamber through one respective channel and the second resonance chamber thereof kept in communication with the last second resonance chamber thereof through one respective channel to provide cross-coupling feedback, getting better stop-band flatness and improving signal quality.

Abstract: An antenna feed coupling structure of a duplexer is disclosed to include a base defining a detoured resonance cavity and a T-shaped feed-in cavity perpendicularly intersecting the resonance cavity and a signal input port in connection with the head of the feed-in cavity, a cover closing the base, and adjustment rods mounted in the base and suspending in the resonance cavity and the feed-in cavity. The adjustment rods include two feed-in adjustment rods and two coupling structure adjustment rods suspending in the intersected area between the resonance cavity and the feed-in cavity and respectively kept in horizontal and in vertical relative to the resonance cavity and rotatable inwards and outwards to adjust the feed-in amount and coupling structure amount of the antenna feed coupling structure respectively.

Abstract: A reverse-phase cross coupling structure includes a base, which has a resonance chamber, resonators vertically arranged in parallel in the resonance chamber, and coupling portions respectively coupled between each two adjacent resonators, each coupling portion having a top recess and a coupling hole in the top recess, and an adjustment device, which comprises a cover plate fixedly covered on the base and has through holes corresponding to the coupling holes of the coupling portions and a plurality of adjustment screws respectively inserted through the through holes of the cover plate and threaded into the coupling holes of the coupling portions to the desired elevation to regulate the amount of the reverse-phase cross coupling of the resonators. This novel reverse-phase cross coupling structure is achieved only by base and adjustment device, it is not necessary to employ extra parts as in the prior designs.