The present invention relates to a cavity filter and a connecting structure included therein. The cavity filter includes: an RF signal connecting portion spaced apart, by a predetermined distance, from an outer member having an electrode pad provided on a surface thereof; and a terminal portion configured to electrically connect the electrode pad of the outer member and the RF signal connecting portion so as to absorb assembly tolerance existing at the predetermined distance and to prevent disconnection of the electric flow between the electrode pad and the RF signal connecting portion, wherein the terminal portion includes: a first side terminal contacted with the electrode pad; and a second side terminal having a housing space in which a part of the first side terminal is housed, and connected to the RF signal connecting portion, wherein the first side terminal is provided as an elastic deformable body whose part is radially widened or narrowed against an assembly force provided by an assembler. Therefore, the cavity filter can efficiently absorb assembly tolerance which occurs through assembly design, and prevent disconnection of an electric flow, thereby preventing degradation in performance of an antenna device.

A high-frequency signal transmission-reception circuit includes a plurality of band pass filter groups each including a plurality of band pass filter pairs; a first switch including a plurality of band pass filter-side terminal groups each including a plurality of band pass filter-side terminals, and an antenna-side terminal group; a plurality of couplers configured to output respective signal strengths of high-frequency signals transmitted on a plurality of transmission paths; and a second switch including an input terminal group electrically connected to the plurality of couplers, and an output terminal configured to output a detection signal output from one of the plurality of couplers. The first switch electrically connects one band pass filter-side terminal in one band pass filter-side terminal group and one antenna-side terminal, and also electrically connects one band pass filter-side terminal in another band pass filter-side terminal group and another antenna-side terminal.

A base station antenna, including power dividers, network calibration modules, and connectors. The base station antenna includes at least two phase shifters. At least one phase shifter is integrated with a combiner, the connectors are connected to the network calibration modules, and the network calibration modules are connected to the phase shifters. The one phase shifter integrated with the combiner is connected to the power divider, and at least one output port of the at least one other phase shifter is connected to the phase shifter integrated with the combiner. The base station antenna has an integrated design of phase shifters and combiners.

A communication apparatus includes a phase shifter, an input port, and an output port. The phase shifter includes a first structure that includes a first phase difference coupler, a second phase difference coupler, a first, second, third, fourth, a fifth and a sixth phase shifter, a cross coupler, a first combiner, and a second combiner. The first phase difference coupler is coupled to the third and fourth phase shifter, and is further coupled to the cross coupler and the first combiner. The second phase difference coupler is coupled to the fifth and sixth phase shifter, and is further coupled to the second phase shifter and the second combiner. A second output port of the first phase difference coupler is coupled to a first input port of the cross coupler. A first output port of the second phase difference coupler is coupled to an input port of the second phase shifter.

A communication apparatus includes a phase shifter, an input port, and an output port. The phase shifter includes a first structure that includes a first phase difference coupler, a second phase difference coupler, a first, second, third, fourth, a fifth and a sixth phase shifter, a cross coupler, a first combiner, and a second combiner. The first phase difference coupler is coupled to the third and fourth phase shifter, and is further coupled to the cross coupler and the first combiner. The second phase difference coupler is coupled to the fifth and sixth phase shifter, and is further coupled to the second phase shifter and the second combiner. A second output port of the first phase difference coupler is coupled to a first input port of the cross coupler. A first output port of the second phase difference coupler is coupled to an input port of the second phase shifter.

Proposed is a radio frequency (RF) multiplexer of a 5G mmWave low-loss broadband wireless hybrid type using a waveguide cavity Ka-band in which outputs of a mobile communication band communication system using a plurality of satellite frequencies are combined, thereby reducing an insertion loss and increasing passive inter-modulation distortion (PIMD) performance, and signals at adjacent frequencies in a 5G mobile communication band are effectively filtered using a single mode or multiple modes, thereby reducing a size of a filter to reduce a weight thereof. The RF multiplexer of the 5G mmWave low-loss broadband wireless hybrid type using the waveguide cavity Ka-band includes bandpass filters which may receive signals in an RF frequency band to perform tuning and a coupler which combines outputs of at least two bandpass filters to match an antenna.

A filter device for routing microwave/RF signals is disclosed comprising an antenna port and at least one filter unit. Each filter unit comprises a receiving port, a transmitting port, an antenna node; a circulator comprising first, second, and third ports; and a receiver branch from the receiving port to the first port. The receiver branch comprises a receiver filter having first and second ports. Each filter unit also comprises a transmitter branch, comprising a transmitter filter having first and second ports. Moreover, the third port of the circulator is coupled to the antenna node. Each filter unit further comprises at least one of a receiver isolator coupled to the receiver filter and the circulator, and a transmitter isolator coupled to the transmitter filter and the circulator.

A filter device for routing microwave/RF signals is disclosed comprising an antenna port and at least one filter unit. Each filter unit comprises a receiving port, a transmitting port, an antenna node; a circulator comprising first, second, and third ports; and a receiver branch from the receiving port to the first port. The receiver branch comprises a receiver filter having first and second ports. Each filter unit also comprises a transmitter branch, comprising a transmitter filter having first and second ports. Moreover, the third port of the circulator is coupled to the antenna node. Each filter unit further comprises at least one of a receiver isolator coupled to the receiver filter and the circulator, and a transmitter isolator coupled to the transmitter filter and the circulator.

An electronic device is provided. The electronic device includes an antenna, a wireless communication circuit, and a diplexer. The diplexer includes a first port, and second and third ports connected to the wireless communication circuit, a low pass filter (LPF) configured to filter an RF signal of a low frequency band from a signal received from one of the first port and the second port and output same to the other one of the first port and the second port, and a high pass filter (HPF) configured to filter an RF signal of a high frequency band from a signal received from one of the first port and the third port and output same to the other one of the first port and the third port.

A composite electronic device comprises a ceramic waveguide, CWG, device having at least two input/output, I/O, ports; and a ceramic stripline, CS, device comprising at least one stripline transmission paths having at least two I/O ports. The CS device is affixed to the CWG device such that at least one of the I/O ports of the CWG device is electrically connected to a corresponding one I/O port of the CS device.