642 results about "Duplexer" patented technology

The invention belongs to the technical field of microwave passive devices, and discloses a millimeter wave duplex power divider based on a multilayer metal gap waveguide and a working method thereof, and the millimeter wave duplex power divider comprises a common channel, a low-frequency filtering power divider and a high-frequency filtering power divider; the input port of the common channel is used for being connected with an electromagnetic wave signal source, and the output end of the common channel comprises an upper output channel and a lower output channel. Wherein the first output channel is connected with the input port of the low-frequency filtering power divider, and the second output channel is connected with the input port of the high-frequency filtering power divider; the low-frequency filtering power divider and the high-frequency filtering power divider are stacked up and down and adopt double-layer metal gap waveguide structures; wherein a fourth-order resonant cavity is arranged in the double-layer metal gap waveguide structure so as to realize a duplex power division function; functions of a duplexer and a power divider are integrated, loss caused by machining and assembling errors is greatly reduced, and low insertion loss and high isolation between channels of the duplex power divider are achieved.

The invention provides a high-voltage bidirectional NPN electrostatic protection device and a preparation method thereof. The high-voltage bidirectional NPN electrostatic protection device comprises a P-type substrate, an N-type buried layer on the P-type substrate and a bidirectional NPN device structure on the N-type buried layer, the bidirectional NPN device structure comprises a P-type epitaxial layer, a P-type buried layer at the bottom of the P-type epitaxial layer, a first N-type well, a P-type well, a second N-type well, a first floating P + injection region in the P-type well, a second floating P + injection region in the first N-type well and a third floating P + injection region in the second N-type well, the M N + injection regions are arranged on the outer side of the second floating P + injection region at intervals; the M N + injection regions are arranged on the outer side of the third floating P + injection region at intervals; m is a natural number greater than or equal to 2. The bidirectional ESD protection circuit is suitable for a high-voltage port needing bidirectional ESD protection, the discharge capacity of ESD current and the maintaining voltage of a bidirectional NPN triode are improved, and the bidirectional ESD protection circuit has high area efficiency and high latch-up resistance.

The invention discloses a waveguide duplexer for a dual-band probe and application. The waveguide duplexer comprises a common end waveguide port, a D-waveband standard waveguide port, a G-waveband standard waveguide port, a non-standard waveguide channel of a common end, a stepped transition structure from a non-standard waveguide to a ridge waveguide, and a T-shaped connection structure among a high-frequency channel, a low-frequency channel and a common end channel. The invention discloses an impedance matching structure for transition from a connection structure to a low-frequency channel, the low-frequency channel, a transition structure from the low-frequency channel to a D-band standard waveguide, a high-frequency channel and a transition structure from the high-frequency channel to a G-band standard waveguide, and relates to the technical field of microwave radio frequency testing. The transition structure from each channel to the standard waveguide of the corresponding wave band provides an interface connected with other devices or equipment, and has the good channel transmission characteristics of low loss, good isolation between channels and the like, and as most structures adopt the ridge waveguide design, the working bandwidth is wide and the device structure is compact on the premise of large power capacity.

The invention belongs to the technical field of high-orbit satellite communication. A ground station antenna S, Q, V multi-band dual-polarization feed source implementation device comprises an S-band dual-polarization feed source network, the S-band dual-polarization feed source network comprises a polarization switch, first duplexers, first sum-difference networks, a polarizer assembly and an S feed source horn, the polarization switch is connected with the two first duplexers, each first duplexer is connected with the first sum-difference network, and the S feed source horn is connected with the second duplexers. The output of one first sum-difference network is connected to a left-hand polarization port of each polarizer assembly, the output of the other first sum-difference network is connected to a right-hand polarization port of each polarizer assembly, and each polarizer assembly is connected with an S feed source horn; the Q / V frequency band feed source network comprises two second duplexers which are respectively connected with a quadrature device, a polarizer is respectively connected with the quadrature device and a tracker, and the tracker is respectively connected with a difference signal synthesis network and a Q / V corrugated horn; and the S feed source horns are arranged around the Q / V corrugated horns. And the optimal utilization effect of space and signal receiving and transmitting efficiency is achieved.

A dual mode surface acoustic wave (SAW) filter includes a piezoelectric substrate, a pair of reflectors disposed on the piezoelectric substrate, and N input and output interdigital transducers (IDTs) disposed on the piezoelectric substrate and between the pair of reflectors and alternately arranged in a lateral direction. Each IDT includes a pair of comb electrodes with a plurality of electrode fingers, adjacent electrode fingers pointing in opposite directions. The total number of electrode fingers in each IDT is an odd number greater than or equal to 3. The invention also discloses a receiving filter and a duplexer.

A duplexer including a support substrate, a reception signal terminal, a transmit signal terminal, an antenna terminal, a receive side filter formed on the support substrate and electrically coupling the reception signal terminal to the antenna terminal, a transmit side filter formed on the support substrate and electrically coupling the transmit signal terminal to the antenna terminal, a side wall surrounding the receive side filter and the transmit side filter, and a cap wafer disposed on the side wall and enclosing the receive side filter and the transmit side filter in a cavity defined by the cap wafer, the side wall, and the support substrate, there being no post disposed on the antenna terminal and in contact with the cap wafer.

The utility model relates to the technical field of duplexer protection structures, and discloses a radio frequency duplexer connection protection structure which is applied to a duplexer body, a lower fixed protection bin is fixed below the right side of the duplexer body, and abutting columns are elastically installed on the front portion and the rear portion of the interior of the right side of the lower fixed protection bin. Clamping grooves are formed in the front portion and the rear portion of the interior of the right side of the lower fixed protection bin, an upper movable protection bin used for being sealed with the lower fixed protection bin is hinged to the right side of the duplexer body, the upper movable protection bin is in extrusion fit with the abutting column, and elastic clamping pieces are fixed to the positions, matched with the clamping grooves, of the upper movable protection bin. And the elastic clamping piece is clamped in the clamping groove, so that the joint of the duplexer body and the connecting line can be better protected through the cooperation of the lower fixed protection bin and the upper movable protection bin, and meanwhile, the stability of the joint of the duplexer body and the connecting line in use is improved.

A method and an apparatus for self-interference cancellation in a communication device. The communication device includes an antenna configured to transmit a transmit signal and receive a receive signal through a duplexer in FDD communications, a first analog to digital converter (ADC) configured to convert the receive signal from analog to digital, a coupler configured to couple a sample of the transmit signal to a second ADC, which is configured to convert the sample of the transmit signal from analog to digital, and self-interference cancellation circuitry configured to process the digital sample of the transmit signal to generate a self-interference cancellation signal and apply the self-interference cancellation signal to the digital receive signal to cancel an amount of interference induced in the receive signal by the transmit signal. The SIC process provides additional isolation between TX signal and RX signal. The additional isolation could be utilized to relief the isolation requirement for the duplexer, reducing the cost and form factor of the duplexer.

The utility model discloses a switching matrix of a high-power multipath coaxial switch, a coaxial switch switching matrix and a controller. The coaxial switch matrix comprises a plurality of coaxial switches, a plurality of output antennas, a plurality of power sources, a dummy load, a duplexer and a power combiner. The coaxial switch is used for connecting each component, the power source can be connected to any output antenna or dummy load, the duplexer is used for receiving two power sources and outputting the two power sources to any output antenna or dummy load, and the power combiner is used for receiving and combining a plurality of power sources and outputting the power sources to a specific output antenna or dummy load; and the controller is used for controlling the coaxial switch to switch.

The invention relates to the technical field of duplexers, and discloses a duplexer temperature compensation parameter automatic adjusting method and device. The method comprises the following steps: performing working temperature sampling on a duplexer to obtain temperature sampling data, and performing distribution feature extraction on the temperature sampling data to obtain temperature feature data; inputting the temperature feature data into a mechanism information neural network for feature reconstruction to obtain temperature compensation features; performing radial basis function neural network mapping on the temperature compensation characteristics to obtain a duplexer frequency drift state quantity; performing sliding window adaptive Kalman filtering operation on the frequency drift state quantity of the duplexer to obtain a compensation parameter; the compensation parameters are input into a feedforward compensation controller, a voltage-controlled resonator of the duplexer is adjusted through a sliding mode control structure, a frequency compensation signal is obtained, and stable compensation of the frequency of the duplexer is achieved.

The invention provides a dielectric waveguide filter, a construction method and a dielectric waveguide duplexer. The construction method of the dielectric waveguide filter comprises the following steps: selecting a dielectric material based on a given target passband index; establishing a matrix four-mode dielectric waveguide resonator, and adjusting the size of a rectangular dielectric waveguide to enable the resonant mode frequency to reach a target frequency band; carrying out electromagnetic field distribution analysis on a single four-mode dielectric waveguide resonator with a set size, positioning the distribution position of a resonance mode according to the distribution condition of an electromagnetic field, and respectively embedding four blind holes in the position where the electromagnetic field is strongest in distribution so as to realize polarization fixation and frequency regulation and control on the resonance mode; selecting a coupling topology to construct a dielectric filter based on frequency regulation and control of the four-mode dielectric waveguide resonator; the additional coupling blind holes are added on the basis of the coupling topological structure so as to regulate and control the mutual coupling between the adjacent resonators. According to the technical scheme, the problem that the size of a filter in the prior art is large is effectively solved.

The invention discloses a low-power-consumption Ku / Ka dual-band transceiver, which relates to a low-power-consumption dual-band transceiving combination in the field of communication, realizes time-sharing work of Ku and Ka bands, and has a radio frequency signal transceiving function. The ultra-low-power-consumption Ku-band band-pass filter is composed of an intermediate frequency unit, a Ku-band receiving and transmitting module, an ultra-low-power-consumption modulation switch circuit, a Ka-band receiving and transmitting module, a Ku-band duplexer, a Ka-band duplexer, a frequency source module and the like. Low power consumption is realized through technologies of circuit multiplexing, pulse modulation switch switching, integrated design and the like. The low-power-consumption miniaturized dual-band transceiver has the advantages of miniaturization, low stray, good amplitude-frequency, stable and reliable performance and the like, can normally work in a relatively severe environment, and is particularly suitable for serving as a low-power-consumption miniaturized dual-band transceiver of a satellite communication terminal.

The invention discloses a high-stability GaN bidirectional device which comprises a substrate and a transition layer, a buffer layer, a back barrier layer, a channel layer and a barrier layer which are sequentially stacked on the substrate, a first grid electrode and a second grid electrode are prepared on a first hole injection layer and a second hole injection layer respectively, and the first hole injection layer and the second hole injection layer are located on the barrier layer; the first source electrode and the second source electrode are prepared on the barrier layer in an ohmic contact mode and located on the two sides of the first hole injection layer and the second hole injection layer; the first source electrode, the first hole injection layer, the second hole injection layer and the second source electrode are isolated from one another through passivation layers; from the angle of energy band, the valence band top of the back barrier layer is lower than the valence band top of the channel layer, so that the hole is prevented from being injected into the substrate. The device has the functions of bidirectional conduction and bidirectional voltage resistance, can effectively inhibit a current collapse effect caused by a surface trap and a substrate effect, and has high dynamic stability and low dynamic conduction resistance; the substrate can be connected with any source electrode and can also be electrically suspended so as to improve the breakdown voltage of the device.

The invention provides a harmonic enhancement type load traction system. The harmonic enhancement type load traction system comprises a circulator, an impedance tuner, a high-pass filter, a radio frequency power amplifier and a non-reflection duplexer which are connected end to end to form a closed-loop structure, the input end of the circulator is connected with a bias structure of a to-be-tested device, and the non-reflection duplexer is connected with a fundamental wave signal to form an open-loop structure; the active closed-loop load traction structure is used at the harmonic wave position, the active open-loop load traction structure is used at the fundamental wave position, tuning of the fundamental wave and tuning of the second harmonic wave are effectively compatible, the integration level is high, and impedance tuning of the harmonic wave can be achieved under the condition that other equipment such as a signal source is not introduced.

The invention provides a shipborne relay vertical omnidirectional communication array antenna, which relates to the technical field of wireless communication and comprises a base, a low-frequency printed substrate and two high-frequency printed substrates, a plurality of low-frequency dipole units and second phase guider coupling units are arranged on the two surfaces of the low-frequency printed substrate in an array manner, and the low-frequency dipole units form an array through a combiner; a plurality of high-frequency dipole subunits and first phase guider coupling units are arranged on the two surfaces of the high-frequency printed substrate in an array manner, and each high-frequency dipole subunit outputs through a parallel connection network; the low-frequency printed substrate and one group of high-frequency signals are connected with one antenna port of the 5G communication module through the duplexer combiner, and the other group of high-frequency signals are independently output and connected with the other antenna port of the 5G communication module. The dipole unit adopts a parallel feed array, so that the gain of the antenna in the horizontal direction is improved, and the omnidirectional coverage area and gain of the antenna are increased in a turning manner; and the phase guider coupling unit beside the dipole unit improves the out-of-roundness of the antenna.

The invention provides an unmanned aerial vehicle electromagnetic interference positioning method and system, and relates to the technical field of unmanned aerial vehicles, and the method comprises the steps: 1, carrying out the broadband frequency spectrum scanning of a remote control link frequency band, a telemetering link frequency band and an image transmission frequency band at the full flight stage of an unmanned aerial vehicle, detecting an interference signal in a frequency hopping communication system in real time, and transmitting the interference signal to an unmanned aerial vehicle; identifying random hopping frequency conversion points covered by the interference signals to form a hopping frequency conversion point set; and step 2, inputting the hopping frequency point set into a radio frequency sharing front end, coupling a radio frequency signal of a communication antenna to a spectrum analysis unit through a duplexer, and performing signal compensation on a coupling path by utilizing automatic gain control and a phase equalizer to obtain corrected interference spectrum data. The anti-interference capability and the flight safety of the unmanned aerial vehicle in a complex electromagnetic environment are improved, and the avoidance path is generated to guarantee the safe flight of the unmanned aerial vehicle.

A direction finding system for navigation interference detection relates to the technical field of navigation communication and comprises a shell, a cover plate and an interface module, an antenna is mounted at the top of the shell, a receiver is arranged in the shell, an input end of the receiver is electrically connected with a north finder and a duplexer respectively, an output end of the receiver is electrically connected with a switch, the duplexer is electrically connected with the antenna, and the antenna is electrically connected with the cover plate. The north seeker, the switch and the receiver are correspondingly and electrically connected with the power supply; the bottom of the shell is correspondingly and hermetically connected with the cover plate, the bottom surface of the cover plate is provided with an interface module, the interface module is provided with a power supply input interface electrically connected with a power supply and a network interface electrically connected with a switch, and the bottom of the interface module is provided with a connector for mounting a tripod; the direction finding system has high portability and stability.

The invention provides a same-time same-frequency-band full duplex communication device with rapid and agile frequency. Comprising a duplexer, a first frequency hopping wave trap, a first radio frequency amplifier, a first frequency hopping filter, a second frequency hopping wave trap, a second radio frequency amplifier, a second frequency hopping filter, a third radio frequency amplifier, a band-pass filter, an analog-to-digital converter, a standard frequency, a channel controller, a baseband processor, a digital-to-analog converter, a fourth radio frequency amplifier and a third frequency hopping filter. A fifth radio frequency amplifier; and a fourth frequency hopping filter. According to the simultaneous same-frequency-band full-duplex communication device with the fast and agile frequency, the working frequency of the full-duplex communication device covers 100 MHz to 1 GHz, the frequency range is wide, the communication efficiency is high, time delay is small, self-interference generated by a local transmitter is effectively restrained, application of a full-duplex communication system in the wide-frequency-band simultaneous same-frequency-band high-speed frequency hopping process can be met, and the full-duplex communication device is suitable for wide-frequency-band simultaneous same-frequency-band high-speed frequency hopping. The transceiving isolation of the system duplexer is greater than 30dBc, and the notch suppression capability of the receiving path is greater than 65dBc.

The invention relates to the technical field of bulk acoustic wave resonators, and particularly provides a temperature compensation type bulk acoustic wave resonator, a preparation method thereof and a duplexer, the temperature compensation type bulk acoustic wave resonator comprises a substrate, a bottom electrode, a piezoelectric layer, a top electrode and a temperature compensation layer which are sequentially connected from bottom to top, the substrate is provided with an acoustic reflector, and the temperature compensation layer is provided with a dielectric layer. The temperature drift coefficient of the temperature compensation layer is smaller than that of the piezoelectric layer, the temperature compensation layer comprises a first compensation part, and the boundary of the projection of the first compensation part in the overlook direction is located in the boundary of the projection of the acoustic reflector in the overlook direction; the temperature compensation type bulk acoustic wave resonator can effectively solve the problem that the resonant frequency of the bulk acoustic wave resonator is easily influenced by the temperature change due to the fact that the material characteristic of the piezoelectric layer shifts along with the temperature change.

The disclosed front end architectures are configured to conglomerate duplexer transmission (TX) contours into a specific or targeted region. This enables the power amplifier (PA) to match a larger number of frequency bands without the help of additional matching networks. The disclosed architectures are advantageous because they reduce the number of components (e.g., surface mount technology components (SMTs)) required for radio-frequency (RF) modules, such as front end modules, power amplifier modules, and the like. The disclosed architectures are also advantageous because they improve performance of the modules across a wider range of frequency bands.

The utility model discloses a broadband radio frequency front-end assembly, which comprises a frequency conversion module, a signal transmitting module and a signal receiving module, the frequency conversion module comprises a superheterodyne primary frequency conversion circuit and a superheterodyne secondary frequency conversion circuit; the superheterodyne primary frequency conversion circuit is connected with the signal sending module; the superheterodyne secondary frequency conversion circuit is connected with the signal receiving module; a duplexer DPX is arranged between the signal sending module and the signal receiving module. By arranging the superheterodyne primary frequency conversion circuit and the superheterodyne secondary frequency conversion circuit, primary frequency conversion is carried out firstly to shift an input signal to a higher high and intermediate frequency, a local oscillator of target signal band frequency conversion falls outside a working frequency band, then the high and intermediate frequency is shifted to a target signal band through secondary frequency conversion, the signal distortion degree is reduced, and the signal quality is improved. And the requirements of bandwidth and sideband suppression can be met at the same time.

Duplexer (1), comprising: an antenna connection (11), a transmission connection (12), a receiving connection (13), a transmission filter connected between the antenna connection (11) and the transmission connection (12), a receiving filter connected between the antenna terminal (11) and the receiving terminal (13), and an inductance component (4) connected at one end to the antenna terminal (11) and connected at another end to a ground potential, wherein the transmission filter comprises an elastic wave filter having a ladder circuit configuration, the elastic wave filter including a piezoelectric substrate (5), a series arm resonator (51, 52, 53, 54) and a plurality of shunt arm resonators (P1 - P4), the series arm resonator (51, 52, 53, 54) comprising an elastic wave resonator formed on the piezoelectric substrate and the shunt arm resonators (P1 - P4) each comprising an elastic wave resonator formed on the piezoelectric substrate (5), and wherein one of the shunt arm resonators provided in a shunt arm arranged closest to the transmission terminal in the ladder circuit configuration comprises a transmission-side shunt arm resonator (P1), and the transmission-side shunt arm resonator (P1) is arranged closer to one side of the piezoelectric substrate (5) than a rest of the shunt arm resonators (P2 - P4), the one side (5a) extending in a direction parallel to a propagation direction of an elastic wave in the transmission-side shunt arm resonator (P1), characterized in that the inductance component (4) is arranged outside one side of the piezoelectric substrate such that the electromagnetic coupling between the inductance component (4) and the transmitting-side shunt arm resonator (P1) with its own ground connection is stronger than the electromagnetic coupling between the inductance component (4) and the rest of the shunt arm resonators (P2 - P4).

The invention discloses a duplexer topological structure, a radio frequency module and electronic equipment. The duplexer topological structure comprises a transmitting end filter connected between a transmitting end and an antenna port; a receiving end filter connected between the receiving end and the antenna port; wherein the receiving end filter comprises a plurality of first series resonators which are sequentially connected in series between the receiving end and the antenna port; every two adjacent first series resonators are grounded through a first parallel resonator; and the adjusting branch is connected with the receiving end filter and is used for adjusting the position of the parallel resonance point in the receiving end filter, so that the body wave of the resonator in the receiving end filter is located outside the passband of the receiving end filter. According to the technical scheme, the problem of insertion loss deterioration caused by the fact that the body wave of the resonator falls into the passband can be avoided, the insertion loss of the resonator can be reduced, and then the performance of the duplexer can be improved.

The invention discloses a multi-band CTS antenna, comprising a feeding network, a multiplexing network and a radiating unit stacked from bottom to top, wherein the feeding network comprises a first metal plate, a second metal plate, four line sources, a first input port, a second input port and a third input port, the multiplexing network comprises a third metal plate and three duplexers, the third duplexer comprises a first low-pass filter, a first band-stop filter and a first E-plane power divider, the second duplexer comprises a second low-pass filter, a second band-stop filter and a second E-plane power divider, the first duplexer comprises a third low-pass filter, a third band-stop filter and a third E-plane power divider, and the radiating unit comprises a fourth metal plate, a fifth metal plate, two one-to-eight power dividers with consistent structures and parameters and sixteen CTS radiating slots with consistent structures and parameters; the antenna has the advantage of being able to cover K-band, Ka-band and Ku-band at the same time, and having high applicability in communication environment.

The invention relates to the technical field of testing, in particular to a device forward non-linear testing device and a testing method.The device forward non-linear testing device comprises a signal source, a frequency spectrograph, a duplexer and a load, the duplexer is electrically connected with the frequency spectrograph, the load and a to-be-tested piece, the signal source is electrically connected with the to-be-tested piece, and the frequency spectrograph is used for monitoring the forward non-linear degree of the to-be-tested piece; in this way, in the testing process, the signal source transmits a signal to the to-be-tested piece, due to the nonlinear factor of the to-be-tested piece, nonlinear energy such as harmonic stray is generated, one part of the nonlinear energy is reflected, and the other part of the nonlinear energy continues to be transmitted after passing through the to-be-tested piece; the nonlinear energy continuously transmitted by the to-be-tested piece is transmitted to the load and the frequency spectrograph through the duplexer, and the forward nonlinearity degree of the to-be-tested piece can be monitored on the frequency spectrograph, so that the forward nonlinearity degree of the to-be-tested piece is tested.

A method for reducing receive band leakage may include: sensing, at a full duplexer, passive intermodulation distortion and power amplifier distortion; generating, at a processing device, a passive intermodulation distortion and power amplifier distortion cancellation signal; and cancelling, on a receive path, the passive intermodulation distortion and power amplifier distortion using the passive intermodulation distortion and power amplifier distortion cancellation signal.

The invention provides a radio frequency front-end assembly and a working method thereof. A radio frequency front end assembly comprises a first amplification module, a second amplification module, a third amplification module, a fourth amplification module, a switch assembly used for realizing dual polarization switching, a first circulator, a second circulator, a third circulator, a fourth circulator, a duplexer A, a duplexer B and a power divider. The first amplification module and the second amplification module are connected with the first circulator and the second circulator in a one-to-one correspondence manner; the third amplification module and the fourth amplification module are connected with the third circulator and the fourth circulator in a one-to-one correspondence manner; the switch assembly is connected with the first circulator, the second circulator, the third circulator and the fourth circulator. The first circulator and the second circulator are both connected with the duplexer A, and the third circulator and the fourth circulator are both connected with the duplexer B; and the duplexer A and the duplexer B are both connected with the power divider.

The invention discloses a wide-angle high-gain common-caliber satellite communication-in-moving antenna, and belongs to the technical field of satellite communication. The antenna comprises an antenna array, a T / R assembly, a feed network and a support frame. Wherein the antenna array comprises two layers of antenna units which are annularly and uniformly arranged, and the whole antenna array is in an inverted bowl shape; the T / R assembly comprises a circular substrate, a receiving channel assembly, a transmitting channel assembly and a duplexer assembly; and the supporting frame is used for supporting and fixing the antenna array. The antenna has the advantages of being high in scanning speed and tracking precision, meanwhile, by changing the working state of the T / R assembly, beam pointing can be controlled, a larger-angle scanning range can be achieved, and the scanning gain is high.

An electrical balance duplexer (EBD) is provided in an example comprising a first transformer comprising a first at least part of a transformer winding and a second at least part of a transformer winding and a second transformer comprising a third at least part of a transformer winding and a fourth at least part of a transformer winding, wherein the first at least part of a transformer winding is connected in series with the third at least part of a transformer winding. The EBD also comprises a first amplifier having an output connected to the first at least part of a transformer winding and / or the third at least part of a transformer winding, and a second amplifier having an input connected to a node between the second at least part of a transformer winding and the fourth at least part of a transformer winding. The second at least part of a transformer winding is connected in series with the fourth at least part of a transformer winding between a first antenna node and a second antenna node, wherein the first antenna node is for connection to a first antenna and the second antenna node is for connection to a second antenna.

The present application provides a transceiver, a remote radio unit, and a base station. The suppression degree of a first transmitting filter and a second transmitting filter in a third receiving working frequency band can be reduced; moreover, the structure is simple, and the sizes of a quadplexer and a duplexer are small, thereby reducing the manufacturing and assembly difficulty of the transceiver, and reducing the cost. The transceiver comprises a first transmitting module, a second transmitting module, a quadplexer, a duplexer and a combiner. The first transmitting module is connected to the quadplexer, the second transmitting module is connected to the duplexer, and the quadplexer and the duplexer are both connected to the combiner. The first transmitting module is used for transmitting a first transmit radio frequency signal to the quadplexer. The second transmitting module is used for transmitting a second transmit radio frequency signal to the duplexer. The quadplexer is used for transmitting the first transmit radio frequency signal to the combiner. The duplexer is used for transmitting the second transmit radio frequency signal to the combiner. The combiner is used for outputting the first transmit radio frequency signal and / or the second transmit radio frequency signal.