Abstract: A first RF diplexer, which includes a first hybrid RF coupler, a second hybrid RF coupler, a first RF filter, and a second RF filter, is disclosed. The first hybrid RF coupler has a first main port, a first in-phase port, a first quadrature-phase port, and a first isolation port, which is coupled to a primary RF antenna. The second hybrid RF coupler has a second main port, a second in-phase port, and a second quadrature-phase port. The first RF filter is coupled between the first in-phase port and the second in-phase port. The second RF filter is coupled between the first quadrature-phase port and the second quadrature-phase port.

Abstract: An antenna arrangement (200) and communication device (500) using the antenna arrangement connect a plurality of transceivers (302, 304) to a plurality of antenna elements (314, 316) and switches connections between the transceivers and the antenna elements depending on which transceiver has primary transmit control. The antenna elements include a transmit antenna element (316) and a monitoring antenna element (314). The transceiver having primary transmit control is connected to the transmit antenna element and the transceiver not having primary transmit control is connected to the monitoring antenna element.

Abstract: Disclosed are exemplary embodiments of multiband multiple input multiple output (MIMO) vehicular antenna assemblies for installation to a vehicle body wall. In exemplary embodiments, a multiband MIMO vehicular antenna assembly generally includes at least one cellular antenna configured to be operable over one or more cellular frequencies (e.g., Long Term Evolution (LTE), etc.), at least one satellite antenna configured to be operable over one or more satellite frequencies (e.g., Global Navigation Satellite System (GNSS), satellite digital audio radio services (SDARS), etc.) and at least one Dedicated Short Range Communication (DSRC) antenna configured to be operable over DSRC frequencies.

Abstract: Methods and systems for communicating with rate control. A communication is sent and received from a first device to a second device over a network, wherein the communication comprises at least one audio stream and a second communication stream. A capacity of the network is probed at the first device for the sending and receiving the communication. A presence of a voice in the at least one audio stream is detected at the first device via a voice activity detection of the at least one audio stream. A rate limit is set for the sending and receiving the communication at the first device based on the capacity of the network and the detection of the presence of the at least one audio stream.

Abstract: The present invention employs hierarchical modulation to simultaneously transmit information on different modulation layers using a carrier RF signal. Initially, first data to be transmitted is assigned to a first modulation layer and second data is assigned to a second modulation layer. In one embodiment of the present invention, the first and second data are assigned based on reliability criteria. The first and second modulation layers are hierarchical modulation layers of the carrier RF signal. Once assigned, the first data is transmitted using the first modulation layer of the carrier RF signal and the second data is transmitted using the second modulation layer of the carrier RF signal. In one embodiment of the present invention, information may be transmitted to one end user using one modulation layer, and information may be transmitted to a different end user using a different modulation layer.

Abstract: An ‘L’ shaped dynamically configurable impedance matching circuit is presented herein. The circuit can include a series element and a shunt element. The shunt element in the L-shaped impedance matching circuit can be moved or modified based on the impedance of the circuit elements in electrical communication with each side of the impedance matching circuit. Thus, in some cases, the impedance matching circuit may be a flexible circuit that can be dynamically modified based on the environment or configuration of the wireless device that includes the impedance matching circuit.

Abstract: Techniques for supporting multi-frequency range signal processing for a wireless device. In an aspect, a first antenna is provided to support first and third frequency ranges. A second antenna is separately provided to support a second frequency range, wherein the second is between the first and third frequency ranges. In other aspects, the second antenna can further support a fourth frequency range higher than the third frequency range. Other frequency range combinations, dual antenna aspects, and carrier aggregation features are further disclosed herein.

Abstract: Embodiments provide an area, cost, and power efficient multi-service transceiver architecture. The multi-service transceiver architecture simplifies receiver/transmitter front ends needed for a multi-service architecture, by replacing significant portions of multiple receiver and/or transmitter front ends with a single ADC and/or DAC, respectively. In embodiments, a plurality of received service contents are combined into one composite analog/RF signal and applied to an ADC. The ADC converts the composite signal into a composite multi-service digital signal. Digital techniques are then used to separate the plurality of service contents into a plurality of respective digital streams that each can be independently demodulated. Similarly, in the transmit direction, a plurality of digital streams, including a plurality of service contents, are combined into one composite digital signal.

Abstract: A tunable diplexer includes a high band port, a low band port, an antenna port, a high pass filter, and a low pass filter. The high pass filter is coupled between the high band port and the antenna port, and is configured to pass signals within a high pass band between the high band port and the antenna port. The high pass filter includes a high band path stop band zero, which is configured to selectively attenuate signals within a high band path stop band. The low pass filter is coupled between the low band port and the antenna port, and is configured to pass signals within a low pass band between the low band port and the antenna port. The low pass filter includes a low band path stop band zero, which is configured to selectively attenuate signals within a low band path stop band.

Abstract: Front end circuitry for a wireless communication system includes a first antenna node, a second antenna node, a first triplexer, a second triplexer, and front end switching circuitry coupled between the first triplexer, the second triplexer, the first antenna node, and the second antenna node. The front end switching circuitry is configured to selectively couple the first triplexer to one of the first antenna node and the second antenna node and couple the second triplexer to a different one of the first antenna node and the second antenna node. By using a first triplexer and a second triplexer in the mobile front end circuitry, the mobile front end circuitry may operate in one or more carrier aggregation configurations while reducing the maximum load presented to the first antenna node and the second antenna node, thereby improving the performance of the front end circuitry.

Abstract: A multiplexer for a device capable of receiving signals in first and second frequency bands, the multiplexer comprising a first branch for connecting an antenna to a first sub-system configured to process received signals in the first frequency band, a second branch for connecting the antenna to a second sub-system configured to process received signals in the second frequency band, wherein the first branch comprises a filter for attenuating received signals in the second frequency band and the second branch couples the antenna directly to the second sub-system.

Abstract: A subsea data communication system and a method of performing a data communication between a topside control system and a subsea installation are provided. The topside control system includes a topside low frequency modem adapted to perform a data communication in a first frequency range, and the subsea installation includes a subsea low frequency modem adapted to perform a data communication in the first frequency range. The topside low frequency modem is coupled to a subsea low frequency modem by a data transmission line of an umbilical that connects the topside control system to the subsea installation.

Abstract: A system is provided for transmitting a low code rate spatially multiplexed channel on multiple antennas. The system includes a transmitter and a processor. The processor is configured such that the processor encodes a block of information bits to form channel coded bits, wherein the ratio of the number of channel coded bits to the number of information bits is greater than one; and the processor maps the channel coded bits to modulation symbols, and each channel coded bit is mapped once to a modulation symbol. The transmitter is configured to transmit a first portion of the modulation symbols using a spreading sequence on a first antenna of the multiple antennas and to transmit a second portion of the modulation symbols using the spreading sequence on a second antenna of the multiple antennas.

Abstract: A switch arrangement is described which enable the design of a flexible front end allowing many individual and combinations of frequency band allocations to share a single antenna simultaneously. An apparatus using the switch arrangement is also described. The switch arrangement provides a single pole switch for each set of band specific filtering. The band specific filtering is connected to the pole of a respective single pole switch. The single pole switch has contact points enabling connection to of the filtering to an antenna switch both with and without a frequency selective component in the signal path. The frequency selective component allows sharing of the antenna by two or more frequency band allocations to enable simultaneous use of different radio access technologies, MIMO or Carrier Aggregation through a single antenna. When not required the frequency selective component can be switched out of the signal path to reduce insertion loss.

Abstract: A high-frequency switch module includes a first diplexer arranged to receive a GPS signal and to send/receive a GSM 1800 communication signal and a GSM 1900 communication signal, and a switch element arranged to switch between the sending/receiving of the GSM 1800 and the sending/receiving of the GSM 1900 communication signal. A SAW filter having a passage band corresponding to the frequency band of the GSM 1900 communication signal and a SAW filter having a passage band corresponding to the frequency band of the GSM 1800 communication signal are connected to the switch element. A line length of a transmission line for connection to the SAW filter which provides a reflection phase closer to the open side for the GPS signal as viewed from the switch element is greater than that of a transmission line for connection to the other SAW filter.

Abstract: Digital-to-analog converter circuitry is described. The digital-to-analog converter circuitry includes a plurality of weighted resistance elements. A first weighted resistance element includes a switch coupled to a reference voltage. The first weighted resistance element also includes a T-network coupled to the switch. The T-network approximately equalizes a first response speed of the first weighted resistance element with a response speed of a differently weighted resistance element.

Abstract: Systems and methods are provided for coordinating operation of two or more WLAN subsystems in a single physical device to perform an operation more efficiently, such as with greater throughput. An existing communication link may be established between first WLAN subsystems of two wireless communications devices and augmented with an auxiliary link formed between second WLAN subsystems. A single data stream may be divided and a portion of the stream carried on each link.

Abstract: An antenna arrangement has a first signal path connected to a first antenna. A second signal path is connected to a second antenna. A third signal path includes a device that measures the signal strength. Directional couplers couple the first and second signal paths to the third signal path. Filters filter out signal components that are coupled by one antenna into the other antenna.

Abstract: The present invention helps eliminate ingress noise addition (i.e., the “noise funneling effect” for an HFC coaxial plant). A system according to various aspects of the present invention comprises a switch that includes: (i) a first state for allowing passage of a signal therethrough; and (ii) a second state for preventing passage of the signal therethrough. The system further includes a detection circuit in communication with the switch. The detection circuit is configured to: (i) detect whether the signal includes an amplitude of at least a predetermined level; (ii) operate the switch to the first state if the amplitude of the signal is at least the predetermined level; and (iii) operate the switch to the second state if the amplitude of the signal is less than the predetermined level, wherein operation of the switch to the second state is delayed by a predetermined period of time.

Abstract: A diplexer, for coupling a first radio frequency (RF) signal corresponding to a first carrier frequency and a second RF signal corresponding to a second carrier frequency is disclosed. The diplexer includes a first port arranged to couple the first RF signal; a second port arranged to couple the second RF signal; a third port capable of connecting an antenna; a first impedance unit coupled to the first port and the third port; and a second impedance unit coupled to the second port and the third port; wherein the first port, the second port and the third port are coupled to a direct current (DC) ground; wherein the first impedance unit is arranged to provide an first open-circuit impedance against the second RF signal, and the second impedance unit is arranged to provide a second open-circuit impedance against the first RF signal.

Abstract: An RF circuit system comprises a processing unit for generating an RF signal, a first antenna for transmitting the RF signal, a transmitting suppressor including serially connected filters between the first antenna and the processing unit for filtering the RF signal to generate multiple different suppressed RF signals, a second antenna for receiving the RF signal, and an isolation detector for measuring an isolation value representing isolation between the first and second antennae with respect to the RF signal. The transmitting suppressor outputs the RF signal when the isolation value is not smaller than a threshold, and outputs one suppressed RF signal with reference to the difference between the isolation value and the threshold when otherwise.

Abstract: A method for reducing set-up signaling in a Long Term Evolution (LTE) communication system is performed by an LTE subsystem. The method includes the LTE subsystem: receiving from a first user equipment (UE) a first message as part of a connection procedure to connect the first UE to the LTE system, the first message having contents that include an identifier for identifying a virtual channel on which the first UE intends to transmit media; determining a status of the virtual channel; and based on the status of the virtual channel, determining whether to send to the first UE a response to the first message that allows the connection procedure to proceed or to send to the first UE a response that terminates the connection procedure.

Abstract: There are first and second antennas proximally disposed and configured to resonate within respective first and second frequency bands, which may overlap. An impedance stabilization circuitry is coupled to ground. There is a selective coupler (for example, diplexer, directional coupler, switch) interfacing the second antenna selectively with the impedance stabilization circuitry and with radio circuitry. The selective coupler comprises a first port coupled to the second antenna, a second port coupled to the impedance stabilization circuitry, and a third port configured to couple with radio circuitry that is configured to operate in the second frequency band. The selective coupler provides a predetermined impedance to signals within the first frequency band and a low insertion loss to signals within the second frequency band, thus providing a stable impedance for the first antenna's view of the second antenna.

Abstract: Antenna switch structures having dual switches for swapping high band main and diversity signals and low band main and diversity signals on multiple antennas, including dual-band antennas. Related systems and devices are also described.

Abstract: In one example, a wireless communication device adapted for multi-band operation includes a first antenna, a first diplexer configured to pass signals within first and second sets of frequency bands, first and second signal paths, wherein each signal path includes a set of notch filters tunable to attenuate a different frequency. The wireless communication device includes a second antenna, a second diplexer configured to pass the first and second frequency bands, third and fourth signal paths, wherein each of the third and fourth signal paths includes one or more notch filters tunable to attenuate a different frequency, and a transceiver coupled to each signal path.

Abstract: There are provided a power amplifying circuit and a front end module including the same. The power amplifying circuit includes a signal amplifying unit amplifying and outputting a plurality of wireless signals having different frequency bands, and a diplexer circuit transferring at least one of the plurality of wireless signals output from the signal amplifying unit to an antenna, wherein the signal amplifying unit and the diplexer circuit include impedance matching circuits having different impedance matching ranges, respectively, and the impedance matching range of the diplexer circuit is continuous with that of the signal amplifying unit.

Abstract: Communication circuitry is disclosed that is capable of switching between three or more antennas while providing low harmonic interference during carrier aggregation. In one embodiment, a communication system includes a first switch with two poles and four throws, a second switch with two poles and four throws, and four diplexers associated with four antennas. In a second embodiment, the communication system includes a first switch with three poles and three throws, a second switch with three poles and three throws, and three diplexers associated with three antennas. In the second embodiment, the second switch may have a third pole associated with non-cellular signals such as GPS and WiFi, and one or more of the diplexers may be tunable, for example to efficiently pass 1.575 GHz for GPS signals.

Abstract: An Femtocell/WLAN communication device, comprising a Femtocell module for cellular wireless communications, the Femtocell module having an input for receiving a first electrical input signal and an output for outputting a first electrical output signal, a WLAN module for WLAN communications, the WLAN module having an input for receiving a second electrical input signal and an output for outputting a second electrical output signal, an optical interface having a first conversion path connected to the output of the Femtocell module, a second conversion path connected to the output of the WLAN module, a third conversion path connected to the input of the Femtocell module, and a fourth conversion path connected to the input of the WLAN module, and a common port for receiving the first optical input signal and the second optical input signal, and for outputting the first optical output signal and the second optical output signal.

Abstract: A network gateway function that is provided at a coaxial tap of a hybrid-fiber coaxial broadband network that feeds a customer location. A Data Over Cable Service Interface Specification (DOCSIS) modem may be embedded in the tap wherein the DOCSIS protocol is terminated. A network functionality such as firewall and network address translation is provided at a network termination point that may use Multimedia over Coax (MoCA) or other similar technology using an existing coaxial cable drop to a customer location that effectively extends a home network to the tap.

Abstract: Antenna switch structures having dual switches for swapping high band main and diversity signals and low band main and diversity signals on multiple antennas, including dual-band antennas. Related systems and devices are also described.

Abstract: A radio-frequency transceiver device, used in a wireless communication system, includes a housing; a first printed circuit board, disposed on a first surface of the housing; a second printed circuit board, disposed on a second surface of the housing, for cooperating with the first printed circuit board to process a receive signal; and a waveguide, connected to the housing, having an orthomode transducer, having a common port, for conveying a transmit signal and the receive signal; a first low-pass filter, coupled to a co-polar port of the orthomode transducer; and a diplexer, coupled to a cross-polar port of the orthomode transducer, for cooperating with the first low-pass filter to separate the transmit signal and the receive signal; wherein connection of the housing and the waveguide substantially conforms to an L shape.

Abstract: A tunable diplexer includes a high pass filter, a low pass filter, a high band port, a low band port, and an antenna port. The high pass filter is adapted to pass high band signals falling within a high pass band between the high band port and the antenna port, while attenuating signals outside of the high pass band. The low pass filter is adapted to pass low band signals falling within a low pass band between the low band port and the antenna port, while attenuating signals outside of the low pass band. The low pass filter includes a low stop band zero, which is adapted to attenuate signals within a low stop band. The low stop band zero is tunable, such that the low stop band can be adjusted to selectively attenuate signals within a given frequency band in the low pass band.

Abstract: A mobile wireless communication device includes a circulators coupled between a respective communications arrangement and their antennas. Each circulator includes a coupled tuning network, wherein the tuning networks are operable to tune their circulators for maximum isolation from cross coupling between the power amplifiers within an operating frequency band of the respective communications arrangement.

Abstract: A transceiver includes a transmitter circuit, a receiver circuit, and the loopback switch. The transmitter circuit performs a digital-to-analog conversion (DAC) operation on a calibration code without a transmission digital signal in a calibration mode to generate a calibration signal. The transmitter circuit up-converts the calibration signal and generates a transmission signal. The receiver circuit down-converts the transmission signal in the calibration mode and generates a receiving digital signal. The loopback switch electrically connects an output terminal of the transmitter circuit and an input terminal of the receiver circuit in the calibration mode. Thus, the transceiver may stably reduce a carrier leakage irrespective of processes, voltages, and temperatures.

Abstract: A communication apparatus to support multiband communication is provided. The communication apparatus may be applicable to, for example, a duplexer module for the multiband communication. The communication apparatus may be manufactured to be small and light by simplifying a circuit structure of the duplexer module.

Abstract: Embodiments provide a method and apparatus for performing time division duplex communication, such as may be performed over a wireless communications network. In the embodiments a first circuit pathway is used to transmit a first radio frequency signal in a transmission mode and a second circuit pathway is used to receive a second radio frequency signal in a reception mode. In the reception mode, the first radio frequency signal is switched to an alternate circuit pathway. This may be performed by a radio frequency integrated circuit or by other control circuitry. Switching to an alternate circuit pathway reduces leakage of the first radio frequency signal into the second radio frequency signal.

Abstract: A fractional rate converting filter in a wireless transceiver comprising a delay line, multiplier circuit, adder circuit, and selector. The delay line receives a digital input signal at a first sample rate and has delay blocks each providing an output and receiving samples gated at a plurality of clock cycles of an integer sub-multiple frequency of a clock. The outputs are multiplied by corresponding filter tap coefficients. Each filter tap coefficient is spaced by a first integer Y. The adder circuit receives and sums the tap outputs to provide an output signal. The selector iteratively shifts the coefficients by a second integer Z. The output of each delay block is multiplied by corresponding shifted filter tap coefficients. The delay blocks are inhibited from receiving another input sample during the plurality of clock cycles. The output signal has a second sample rate at the integer sub-multiple frequency of the clock.

Abstract: A switchable diplexer includes a plurality of bandpass filters having passbands for the frequency bands in which communication across a communication channel is desired. The bandpass filters can be arranged in groups of bandpass filters located adjacent to one another physically. Further, a group of bandpass filters can include a plurality of bandpass filters having a stop band in a common frequency range of interest. A plurality of switches can be provided to switch the desired bandpass filter into the circuit to allow communication on its corresponding band. The switches can therefore be electrically coupled to the passband filters and configured to select one of the plurality of bandpass filters for signal communication on the communication channel.

Abstract: A method, transceiver integrated circuit (IC), and communications device that employs a PIN Diode switch in connection with a transceiver integrated circuit in order to provide a highly linear path for simultaneously transmitted signals in a multi-band wireless communications device. A high linearity switch (HLS) utility/controller configures the PIN diode switch for switching between dual and single transmission modes. In the dual transmission mode, both a series PIN diode and a shunt PIN diode of the switch are biased to an on-state. A first transceiver generates and simultaneously transmits different transmission signals occupying different frequency bands to at least one antenna by utilizing a highly linear circuit path that includes the series PIN diode. In single transmission mode, both diodes are biased to an off-state which allows a second transceiver to transmit a single transmission signal to at least one antenna via a switch path with a low insertion loss impact.

Abstract: The present invention includes an apparatus for distributing a received modulated RF signal to a plurality of tuners including a diplexer device. The diplexer device includes a plurality of filter circuits adapted to direct respective portions of the received modulated RF the signal to respective tuner devices. In an illustrated embodiment, the tuner devices supply tuned signals to a picture in picture display device. Also disclosed is a method of receiving a modulated ready of frequency signal and routing portions of the received signal to respective tuner devices using filter devices in a diplexer or multiplexer configuration.

Abstract: Techniques for supporting data transmission and reception on multiple bands for carrier aggregation are disclosed. In an exemplary design, an apparatus (e.g., a wireless device) includes first and second antenna interface circuits coupled to first and second antennas, respectively. The first antenna interface circuit includes a first transmit (TX) filter for a first band, which may be part of a first triplexer or duplexer. The first TX filter filters a first radio frequency (RF) signal prior to transmission via the first antenna. The second antenna interface circuit includes a second TX filter for a second band, which may be part of a second triplexer or duplexer. The second TX filter filters a second RF signal prior to transmission via the second antenna. The first and second RF signals may be transmitted simultaneously on the first and second bands for carrier aggregation.

Abstract: RF signal amplifiers are provided that include an RF input port, a switching device having an input that is coupled to the RF input port, a first output and a second output, a first diplexer having an input that is coupled to both the first output of the switching device and the second output of the switching device, and a first RF output port that is coupled to an output of the first diplexer. These amplifiers further include an attenuator that is coupled between the second output of the switching device and the input of the first diplexer.

Abstract: Radio frequency front end circuitry comprises a first antenna port, a second antenna port, antenna switching circuitry, a first diplexer, and a second diplexer. The antenna switching circuitry is coupled to each of the first antenna port and the second antenna port through the first diplexer and the second diplexer, respectively. The antenna switching circuitry is adapted to selectively couple one or more of a plurality of transmit and receive ports to the first antenna port and the second antenna port.

Abstract: A method of operation in a receive circuit is disclosed. The method comprises entering an initialization mode followed by receiving training data from a lossy signaling path. The training data originates from a transmit circuit. The received training data is sampled and minimax transmit equalizer coefficients are generated based on the sampled data. The minimax transmit equalizer coefficients are then transmitted back to the transmit circuit. The initialization mode is exited and an operating mode initiated, where transmit data precoded by the minimax transmit equalizer coefficients is received.

Abstract: An RF circuit system comprises a processing unit for generating an RF signal, a first antenna for transmitting the RF signal, a transmitting suppressor including serially connected filters between the first antenna and the processing unit for filtering the RF signal to generate multiple different suppressed RF signals, a second antenna for receiving the RF signal, and an isolation detector for measuring an isolation value representing isolation between the first and second antennae with respect to the RF signal. The transmitting suppressor outputs the RF signal when the isolation value is not smaller than a threshold, and outputs one suppressed RF signal with reference to the difference between the isolation value and the threshold when otherwise.

Abstract: The present invention relates to a terminal for the broadband transmission of video, audio or data signals in a domestic environment. It applies more specifically in the scope of terminals operating according to the standard IEEE 802.11n and employing simultaneously several frequency channels in a predetermined band of frequencies, for example the 5 GHz WiFi band. The terminal comprises M antennas, a MIMO device able to generate MIMO signals in said predetermined frequency band from baseband signals or conversely, said MEMO device being able to process N MIMO signals simultaneously, and a switching device to connect the MIMO device to the M antennas.

Abstract: A digital subscriber line arrangement includes a downstream modem, an upstream modem and a copper pair connection between the modems. Each modem includes electrical length estimation function code means which causes the respective modem to measure the attenuation of signals transmitted by the other modem at a plurality of different frequencies, and to combine these measurements, or functions thereof, together to form a combined attenuation measure and to use this combined measure to form an electrical length estimation, KL0bis. The downstream modem is operable to transmit its electrical length estimation to the upstream modem, and the upstream modem is operable to generate a definitive electrical length estimation in dependence upon both the received estimation from the downstream modem and the estimation made by the upstream modem. Having generated a definitive electrical length estimation, the upstream modem is operable to transmit this to the downstream modem.

Abstract: In one embodiment, a differential power amplifier structure includes a transceiver module supporting multiple frequency band signals, a plurality of power amplifiers coupled to the transceiver module, each of the plurality of power amplifiers having at least two outputs having 180° phase offset therebetween, and a plurality of filters coupled to the plurality of power amplifiers.

Abstract: An antenna arrangement (200) and communication device (500) using the antenna arrangement connect a plurality of transceivers (302, 304) to a plurality of antenna elements (314, 316) and switches connections between the transceivers and the antenna elements depending on which transceiver has primary transmit control. The antenna elements include a transmit antenna element (316) and a monitoring antenna element (314). The transceiver having primary transmit control is connected to the transmit antenna element and the transceiver not having primary transmit control is connected to the monitoring antenna element.

Abstract: The present invention refers to a broadband antenna configured for processing at least two frequency bands or radio standards in a radio communications system, the broadband antenna including at least one column, the column including at least one antenna element, a first phase shifter configured for phase shifting a first frequency band or radio standard and a second phase shifter configured for phase shifting a second frequency band or radio standard, and a diplexer configured for diplexing the phase shifted first and second frequency bands or radio standards, including two inputs and one output, with the first phase shifter and the second phase shifter being coupled to the two inputs, and the antenna element being coupled to the output. The invention further refers to a radio base station system including a broadband antenna according to the invention.