Abstract: An antenna comprises a coil element, a first metallic plate element, a second metallic plate element and terminals. The first metallic plate element and the second metallic plate element each have the shape of a triangle or an isosceles trapezoid. Further, the first metallic plate element and the second metallic plate element are mirror symmetric with respect to a symmetry plane that is perpendicular to the longitudinal direction. The antenna provides a wider area of use at small size and can thus be used for different transmission technologies, such as NFC and UWB.

Abstract: An antenna comprises a coil element comprising a core element and coil wound around the core element, the core element arranged along a longitudinal direction and having a first front surface and a second front surface. A first metallic plate element and a second metallic plate element are provided. The first metallic plate element is arranged on a first side of the core element and extends with its first end in the longitudinal direction beyond the first front surface of the core element and its second end in the longitudinal direction adjacent the core element. The second metallic plate element is arranged on a second side of the core element opposite said second side and extends with its first end in the longitudinal direction beyond the second front surface of the core element and its second end in the longitudinal direction adjacent the core element.

Abstract: An antenna comprises a coil element comprising a core element and coil wound around the core element, the core element arranged along a longitudinal direction and having a first front surface and a second front surface. A first metallic plate element and a second metallic plate element are provided. The first metallic plate element is arranged on a first side of the core element and extends with its first end in the longitudinal direction beyond the first front surface of the core element and its second end in the longitudinal direction adjacent the core element. The second metallic plate element is arranged on a second side of the core element opposite said second side and extends with its first end in the longitudinal direction beyond the second front surface of the core element and its second end in the longitudinal direction adjacent the core element.

Abstract: An antenna apparatus attachable to the front-end of a transceiver circuitry, includes at least two balanced radiation elements forming a planar structure for transmitting and/or receiving a corresponding number of partial signals. The antenna apparatus also includes a signal splitter and/or combiner for splitting a signal received from an attached transceiver circuitry into said partial signals and/or combining said partial signals into a signal to be transmitted to an attached transceiver circuitry, a phase shifter device that applies relative phase shifts between at least two of said partial signals. The relative phase shifts are selectable from a group of at least two relative phase shift values provided by the phase shifter device.

Abstract: The present invention relates to the field of microwave antenna and particularly to transmitting and receiving planar antenna design having an omni-directional radiation pattern for ultra wideband (UWB) applications. The object is to provide a planar antenna design for UWB system which is capable of transmitting/receiving microwave signals within the UWB frequency band, capable of a simple planar feeding and a printed low-cost manufacturing antenna, achieves a significant cost reduction by simultaneously applying antenna layout prints while manufacturing classical radio frequency (RF) front-end chip circuits and capable to cope with symmetrical omni-directional transmitting/receiving signals.

Abstract: The present invention relates to an antenna (1) for radiating/or receiving mm-wave signals, comprising a substrate (2), a planar conducting layer (3) formed on said substrate (2), and a radiation element (4) being formed as a slot in said planar conducting layer (3), said slot comprising a middle part (4a) and two outer parts (4b) being connected by said middle part (4a) and extending away from said middle part (4a), said antenna further comprising a feeding structure (5) adapting to feed signals to said middle part (4a) of said slot. The antenna provides a low-cost structure with a high gain.

Abstract: The present invention relates to an antenna apparatus with steerable beam pattern, an RF transceiver comprising the antenna apparatus and a mobile device comprising the antenna apparatus. The antenna apparatus according to the present invention is attachable to the front-end of a transceiver circuitry and comprises at least two balanced radiation elements forming a planar structure, for transmitting and/or receiving a corresponding number of partial signals, a signal splitter and/or combiner for splitting a signal received from an attached transceiver circuitry into said partial signals and/or combining said partial signals into a signal to be transmitted to an attached transceiver circuitry, a phase shifter device operable to apply relative phase shifts between at least two of said partial signals, whereby said relative phase shifts are selectable from a group of at least two relative phase shift values provided by said phase shifter device.

Abstract: The present invention generally relates to the field of microwave antennas, and, more particularly, to a number of three-dimensional designs for the radiation element of an ultra-wideband monopole antenna with a symmetrical omni-directional radiation pattern operated in the frequency range between 3.1 GHz and 10.6 GHz. Said antenna is connected to the analog front-end circuitry of a wireless communication device used for transmitting and/or receiving microwave signals and meets the FCC requirements in terms of antenna gain, radiation pattern, polarization, frequency bandwidth, group delay, and size. It comprises a radiation element consisting of an air- and/or dielectric-filled cavity structure with a base plane and a radiator plane. A metallic ground plane having a relatively high surface impedance to electromagnetic waves within said frequency range, which is printed on a dielectric substrate, serves as a reflector.

Abstract: An ultra wideband antenna includes at least one radiator for transmitting and/or receiving an electromagnetic wave, the radiator having a planar elliptical shape for the whole UWB frequency band and one having at least one elliptical gap for omitting the transmission and reception of an electromagnetic wave at a predefined wavelength ?, whereby the length of the gap depends on the predefined wavelength ?.

Abstract: A modulation identification device can be used for detecting the modulation type of a wirelessly transmitted and modulated RF signal without a-priori information on the kind of modulation used. The modulation identification device (1) comprises a n-port junction (17), n being an integer equal to or larger than three. The n-port junction (17) is supplied with the modulated RF signal (2) and a second RF signal (3) from a local oscillator. The n-port junction (17) outputs at least one third RF signal to at least one power detector (18). A signal processing unit (6) processes the power detected output of the n-port junction (17) to generate at least one flag (10) indicating the identified modulation type.

Abstract: The present invention relates to the field of microwave antenna and particularly to transmitting and receiving planar antenna design having an omni-directional radiation pattern for ultra wideband (UWB) applications. The object is to provide a planar antenna design for UWB system which is capable of transmitting/receiving microwave signals within the UWB frequency band, capable of a simple planar feeding and a printed low-cost manufacturing antenna, achieves a significant cost reduction by simultaneously applying antenna layout prints while manufacturing classical radio frequency (RF) front-end chip circuits and capable to cope with symmetrical omni-directional transmitting/receiving signals.

Abstract: A high performance power detection circuit suitable to be made monolithic, being compact and low at cost, suitable to a radio-frequency operation in a wide band, having excellent linearity in detection characteristics, small fluctuation of detection characteristics against bias fluctuation, small fluctuation of detection characteristics against FET threshold voltage fluctuation and a small DC offset, which does not require an additional circuit even when a subsequent circuit has a balanced input; and a demodulator using the same.

Abstract: A wireless transmission system operating in a 60 GHz frequency range comprises fixed hubs (public download server) (2) and mobile terminals (1). The fixed hubs (2) have antennas (4) with a wide angle beam shape. The mobile terminals (1) have antennas (3) with a narrow angle beam shape. The fixed hubs (public download server) (2) are connected by means of a connection line (5) to an information source such as a network backbone or a main server.

Abstract: An apparatus for a direct down-conversion of modulated RF signals, the device including: a first power detector connected between an input port for the modulated RF signal and ground, which outputs a first DC signal, a second power detector connected between an input port for a local oscillator signal and ground, which outputs a second DC signal, the local oscillator signal having the same center frequency as the modulated RF signal, and a third power detector connected between the input port for the modulated RF signal and the input port for the local oscillator signal, which outputs a third DC signal.

Abstract: The present invention relates to an ultra wideband antenna comprising at least one radiator (2) for transmitting and/or receiving an electromagnetic wave, said radiator (2) being of a planar elliptical shape for the whole UWB frequency band and one having at least one elliptical gap (3) for omitting the transmission and reception of an electromagnetic wave at a predefined wavelength ?, whereby the length (l) of the gap (3) depends on said predefined wavelength ?.

Abstract: The present invention relates to an I/Q demodulator (21) comprising a n-port structure (1,16) is provided, wherein n is an integer value of 4,5 or 6. The demodulator (21) is supplied at a first input (3) with a RF signal (2) which has to be demodulated. At a second input (5) it is supplied with a second RF signal (4). The n?2 output signals (6) are detected by power sensors (7). After low pass filtering (14) the output signals of the power sensors (7) are multiplexed by a multiplexing means (8).

Abstract: The present invention relates to a method and a device for the I/Q demodulation of modulated RF signals. The I/Q demodulator (60) has a first input for the RF signal (61) to be demodulated and a second input for a RF signal (62) originating from a local oscillator (20). The demodulator (60) combines the two RF signals (61,62) to generate three output signals supplied to three power detectors. In a combination unit (70) the three power signals of the power detectors are merged in two signal branches wherein after passing an A/D converting (72) and digital processing unit (73) one signal is the I component and the other one is the Q component of the received modulated RF signal (61).

Abstract: An antenna device, comprising a dielectric substrate board (10), dipole means (16) formed on the substrate board (10), and reflector member (48, 70, 72) having first and second reflective surfaces which are aparallel to each other define a first angle between each other. A positional relationship between the substrate board (10) and the reflector member (48, 70, 72) is such that the substrate board (10) and a vertex of the first angle (?) substantially lie in the same plane and the first and second reflective surfaces lie on opposite sides of the plane, a second angle defined between the substrate board (10) and the first reflective surface being different from zero each. In this way, an antenna device suitable for use in a broad variety of applications is provided which allows easy modification of its antenna characteristics by adjusting the angle between the reflective surfaces and/or the angular position of the reflector member (48, 70, 72) with respect to the substrate board (10).

Abstract: The present invention generally relates to the field of microwave antennas, and, more particularly, to a number of three-dimensional designs for the radiation element of an ultra-wideband monopole antenna with a symmetrical omni-directional radiation pattern operated in the frequency range between 3.1 GHz and 10.6 GHz. Said antenna is connected to the analog front-end circuitry of a wireless communication device used for transmitting and/or receiving microwave signals and meets the FCC requirements in terms of antenna gain, radiation pattern, polarization, frequency bandwidth, group delay, and size. It comprises a radiation element consisting of an air- and/or dielectric-filled cavity structure with a base plane and a radiator plane. A metallic ground plane having a relatively high surface impedance to electromagnetic waves within said frequency range, which is printed on a dielectric substrate, serves as a reflector.

Abstract: A high performance demodulator able to realize a further wide band property, low distortion characteristics, and low power consumption in comparison with a conventional multi-port demodulator and having a small fluctuation in characteristics with respect to temperature fluctuations and aging and comprising a five-port junction circuit 101 receiving a received signal Sr and a local signal Slo generated at a local signal generation circuit 102, generating three signals having a phase difference, detecting signal levels (amplitude components) of these signals to obtain three power detection signals (baseband signals) P1, P2, and P3; a first multiplier 103 for multiplying the power detection signal P1 output from a first power detector of the five-port junction circuit 101 by a coefficient A1 (=(?21/?11)2) for canceling square components of an interference signal and a local signal; a second multiplier 104 for multiplying the power detection signal P1 output from the first power detector by a coefficient A2 (=(?3