A TEM-line network architecture for RF components used in antenna system, includes an electrically conductive main body forming an outer conductor defining a signal channel, and an electrically conductive center conductor electrically grounded to the main body at predetermined locations. The center conductor is electromagnetically isolated from the outer conductor at RF frequencies while being connected and supported within the signal channel only at at least one of the predetermined locations. The outer conductor is preferably formed of three layers with the center conductor being integral with one of the layers.

A technology for a dual-common port multi-bandpass filter is described. The dual-common port multi-bandpass filter can include two or more analog filters. The dual-common port multi-bandpass filter can include a first common port coupled to an input of each of the two or more analog filters. Each analog filter can be configured to filter one or more frequency bands. The dual-common port multi-bandpass filter can include a second common port coupled to an output of each of the two or more analog filters. Each input of each of the two or more analog filters is impedance matched with the first common port. Each output of each of the two or more analog filters is impedance matched with the second common port.

A coaxial cavity resonator filter has a hollow cavity and a post having desired dimensions for achieving desired filter characteristics. A tuning element is supported within a metallic opening and is configured to electromagnetically interact with the post. The tuning element has a conductive core element where the orientation of the tuning element with the cavity is adjusted so as to achieve the desired filter characteristic. An insulator is configured to cover a portion of the conductive core element of the tuning element, at a location where the tuning element and the metallic opening interact. A portion of the insulator is threaded so as to allow the conductive core element vary its orientation within the cavity without contacting the metallic opening.

A coaxial cavity resonator filter has a hollow cavity and a post having desired dimensions for achieving desired filter characteristics. A tuning element is supported within a metallic opening and is configured to electromagnetically interact with the post. The tuning element has a conductive core element where the orientation of the tuning element with the cavity is adjusted so as to achieve the desired filter characteristic. An insulator is configured to cover a portion of the conductive core element of the tuning element, at a location where the tuning element and the metallic opening interact. A portion of the insulator is threaded so as to allow the conductive core element vary its orientation within the cavity without contacting the metallic opening.

A coaxial filter is provided. The coaxial filter comprises a first port, a second port, at least two capacitor segments each having two metal layers and a dielectric layer between them, and at least one grounded inductor stub connected to a metal layer of the at least two capacitor segments. The at least two capacitor segments are coaxially connected in series between the first port and the second port. An axis of the at least one grounded inductor stub is vertical to an axis of the at least two capacitor segments.

A coaxial filter is provided. The coaxial filter comprises a first port, a second port, at least two capacitor segments each having two metal layers and a dielectric layer between them, and at least one grounded inductor stub connected to a metal layer of the at least two capacitor segments. The at least two capacitor segments are coaxially connected in series between the first port and the second port. An axis of the at least one grounded inductor stub is vertical to an axis of the at least two capacitor segments.

When a plurality of RF signals having different freque bands are output at the same time by carrier aggregation, a switch element allows parallel connection between two capacitance elements such that a low pass filter has a first cut-off frequency that is lower than the frequency of an intermodulation distortion signal generated by the carrier aggregation. When an RF signal of a frequency band is output, the switch element releases parallel connection between the two capacitance elements such that the low pass filter has a second cut-off frequency that is higher than the first cut-off frequency.

When a plurality of RF signals having different freque bands are output at the same time by carrier aggregation, a switch element allows parallel connection between two capacitance elements such that a low pass filter has a first cut-off frequency that is lower than the frequency of an intermodulation distortion signal generated by the carrier aggregation. When an RF signal of a frequency band is output, the switch element releases parallel connection between the two capacitance elements such that the low pass filter has a second cut-off frequency that is higher than the first cut-off frequency.

A high-frequency filter with a coaxial design has at least one resonator with a first inner conductor and an outer conductor housing. The outer conductor housing comprises a housing base, a housing cover which is arranged at a distance from the housing base, and a peripheral housing wall between the housing base and the housing cover. The first inner conductor is galvanically connected to the housing base and extends axially from the housing base in the direction of the housing cover. The resonator comprises a second internal conductor which is galvanically connected to the housing cover and extends axially from the housing cover in the direction of the housing base. The first and/or second inner conductor has an inner conductor bore, and a tuning element is arranged in one inner conductor bore in a thread-free axially movable manner. The tuning element is arranged in a sleeve or bushing and optionally or in addition thereto has an enlarged elastic region.

A high-frequency filter with a coaxial design has at least one resonator with a first inner conductor and an outer conductor housing. The outer conductor housing comprises a housing base, a housing cover which is arranged at a distance from the housing base, and a peripheral housing wall between the housing base and the housing cover. The first inner conductor is galvanically connected to the housing base and extends axially from the housing base in the direction of the housing cover. The resonator comprises a second internal conductor which is galvanically connected to the housing cover and extends axially from the housing cover in the direction of the housing base. The first and/or second inner conductor has an inner conductor bore, and a tuning element is arranged in one inner conductor bore in a thread-free axially movable manner. The tuning element is arranged in a sleeve or bushing and optionally or in addition thereto has an enlarged elastic region.