1792 results about "RF module" patented technology

Implantable medical devices (IMDS) having RF telemetry capabilities for uplink transmitting patient data and downlink receiving programming commands to and from an external programmer having an improved RF module configured to occupy small spaces within the IMD housing to further effect the miniaturization thereof. An RF module formed of an RF module substrate and at least one IC chip and discrete components has a volume and dimensions that are optimally minimized to reduce its volumetric form factor. Miniaturization techniques include: (1) integrating inductors into one or more IC chips mounted to the RF module substrate; (2) mounting each IC chip into a well of the RF module substrate and using short bonding wires to electrically connect bond pads of the RF module substrate and the IC chip; and (3) surface mounting discrete capacitors over IC chips to reduce space taken up on the RF module substrate. The integrated inductors are preferably fabricated as planar spiral wound conductive traces formed of high conductive metals to reduce trace height and width while maintaining low resistance, thereby reducing parasitic capacitances between adjacent trace side walls and with a ground plane of the IC chip. The spiral winding preferably is square or rectangular, but having truncated turns to eliminate 90° angles that cause point-to-point parasitic capacitances. The planar spiral wound conductive traces are further preferably suspended over the ground plane of the RF module substrate by micromachining underlying substrate material away to thereby reduce parasitic capacitances.

An RF transmitter uses two digital-to-RF conversion modules to convert digital baseband signals into RF signals. In Cartesian mode, baseband signals are conveyed to the conversion modules for RF conversion. In polar mode, baseband signals are converted into amplitude and phase data parts. Phase data part is converted into I and Q data parts to be converted by the conversion modules into RF signals, which are modulated in a power amplifier by amplitude data part through the power supply of the power amplifier. Each digital-to-RF module uses parallel unit cells to perform D/A conversion function and upconversion function by an IF signal. Each unit cell, adapted to receive a control voltage indicative of a data signal value, is a mixer cell type converter having a differential data switch section connected in series to a differential LO-switch pair. LO-switch is further connected in series to a current source.

A home automation system using an infrared (IR)/radio frequency (RF) integration remote control module based on a network. At least one IR/RF integration remote control module (100) is disposed at a predetermined location of a home automation region. The IR/RF integration remote control module (100) with a wireless interface function integrates an RF modulation/reception/transmission function and an IR modulation/reception/transmission. A set-top box (200) is appropriately disposed so that it can carry out an interface function for controlling the IR/RF integration remote control module (100) and a wired/wireless Internet access function. The set-top box (200) receives various control commands over an Internet network using transmission control protocol/Internet protocol (TCP/IP) and controls the IR/RF integration remote control module (100). Even though various pieces of equipment using the conventional IR reception/transmission scheme or a new electronic product equipped with an RF module is added to the home automation system using an RF modulation scheme, an automation operation and a bidirectional control operation based on the integrated IR and RF transmission scheme can be appropriately carried out. Thus, the home automation system and method can be cost-effectively and conveniently implemented.

A parallel resonant circuit is realized by stacking first to fourth wiring patterns each having at least an inductance element. One of the adjacent first and second wiring patterns is set to a signal input node and the other thereof is set to a signal output node. Then, the signal input node is connected to the signal output node via inductance elements of the first wiring pattern, third wiring pattern, fourth wiring pattern and second wiring pattern in order. By adjacently forming wiring layers of the signal input and output nodes, a capacitance value between the input and output nodes is increased compared to that when they are separated. Also, by increasing the line width of the first and second wiring patterns, the capacitance value can be further increased. Therefore, it is possible to achieve a large capacitance value in a small area and downsizing of the electronic device.

A reader for a radio frequency identification system capable of simultaneously reading tags operating a multiple frequencies. The reader includes a radio frequency module for each operating frequency of the tags. The radio frequency modules are coupled to a bus which is connected to an interrogator control module. Each of the radio frequency modules receives the return signal from the tags at the associated operating frequency and converts the return signal into a pulse sequence. The interrogator control module locks to and decodes the pulse sequence according to the protocol associated with the tag type.

The present invention provides a method for dealing with the carrier conflict between the main card and subordinate card of a single-chip dual-card-dual-standby mobile phone, which includes a set one set of antenna, RF module and baseband processing chip and further comprises a radio resource adapter layer provided between the RRC layer and the physical layer. The RRC module calculates the position of the carriers of the main card and the subordinate card. The radio resource adapter layer determines the relative position between the carriers of main card and subordinate card so as to determine the type of the conflict, set priority levels to the services of the main card and subordinate card, and process the services according to the priority levels so as to avoid the conflict.

A multi-band radio module for selectively supplying received signals in a plurality of frequency bands to a low noise amplifier via an input impedance matching circuit by switching over the operation mode of the low noise amplifier is comprised of: a pre-stage amplification unit including a plurality of fundamental amplifiers connected to one another in parallel, the fundamental amplifiers sharing a load impedance connected to a source voltage and a grounded degeneration impedance and having input signal lines commonly connected to an input impedance matching circuit; a post-stage amplifier to which the output signals of the plurality of fundamental amplifiers are commonly inputted; and a bias control unit for selectively turning on the fundamental amplifiers, wherein the input impedance of the low noise amplifier is selectively optimized for the matching circuit depending on the RF band to be received.

A near field communication (NFC) system and an associated apparatus are provided. The NFC system includes a display device, a host computer, at least one RF module coupled to the host computer, a plurality of antennas coupled to the at least one RF module, and a NFC device. The antennas are disposed behind the display device. The NFC device is for communicating with the host computer via one of the antennas. The NFC system can upgrade communication quality and achieve multi-tasking efficiency.

Either one of a transmission terminal connected to a transmission filter and a receiving terminal connected to a receiving filter is a balanced type terminal, and the other is an unbalanced type terminal. The transmission filter and the receiving filter includes surface acoustic wave resonators or film bulk acoustic resonators. The balanced type terminal is connected to a longitudinal mode coupled surface acoustic wave filter.

An RF module for use in an RF signal transceiver system. In one embodiment, the RF module comprises a substrate having at least a duplexer filter, first and second bandpass filters and first and second low noise amplifiers mounted thereon. The substrate includes respective edges having respective RF signal input/output and supply voltage terminals defined therein. The overall dimensions of the substrate and/or the location of the respective terminals have been predetermined in a manner which allows the same size substrate with the same terminal locations to be used for several different air interfaces such as, for example, EGSM, GSM 850, DCS, and PCS applications, irrespective of a specific air interface need for differently sized and/or additional filters.

A method and system for simulating a wireless environment is provided including a central RF combining component; a plurality of connection nodes, each connection node in RF connection with the central RF combining component through a programmable attenuation component; wherein the programmable attenuation components are controlled by a controller console, the controller console maintaining information regarding simulated spatial positioning of the plurality of connection nodes in the simulated wireless environment, and adjusting the programmable attenuation components to appropriately simulate the simulated spatial positioning of the connection nodes in the simulated wireless environment. Additionally, an RF module for creating and receiving RF signals in a test environment is provided.

A wireless modem includes an RF module adapted to be connected to an antenna, comprising an intermediate frequency input and an intermediate frequency output, a PHY module receiving the intermediate frequency output and generating the intermediate frequency input, and a low level media access control (LL-MAC) module connected to the PHY and using a direct memory access (DMA) connection for data exchange with a high level media access control module (HL-MAC). A direct memory access (DMA) to computer bus interface module is adapted to be connected to the DMA connection of the LL-MAC and to a computer bus. The DMA interface module responds to the LL-MAC as memory and is adapted to cooperate with the HL-MAC connected to the computer bus. The architecture allows for a modem to be placed on a mini-PCI module with the HL-MAC residing in software on a host computer.

Embodiments of the invention may provide for a variety of antennae structures, including the following: a) antennae structures printed directly on the sides of the radio frequency (RF) module or integrated passive device (IPD), b) printed antennae structures fabricated on preformed dielectric lids or overmolds, c) antennae structures fabricated as part of the dielectric wiring that constitutes the wireless module, d) antennae structures that are printed directly on the top of the finished RF module, and e) antennae structures printed directly on the dielectric layers adjacent to thin film wiring and embedded passive elements such as filters, diplexers and couplers.

A wireless network adapter for establishing wireless communication links between electronic devices. In one embodiment, the wireless network adapter comprises wireless communication circuitry encased in a shell in the form of a detachable molding element of an electronic device. The wireless network adapter further comprises a bus connector adapted to couple the wireless communication circuitry to an expansion bus when the shell is attached to an outer surface of an electronic device. The wireless network adapter is a fully integrated solution further comprising an RF antenna for communication with a wireless network and a radio modem comprising a radio, a receiver, and modulation circuitry. The RF antenna in the wireless network adapter may take one of several forms. The antenna may be a dedicated unit housed within the shell of the wireless network adapter. Alternatively, the antenna may form a part of the outer shell of the adapter or it may form a part of a company logo located on the shell the adapter. The wireless network adapter is installed in an electronic device such as a portable computer. The electronic device comprises, at a minimum, a system microprocessor, an expansion bus, a read-writeable memory device, an input/output device, and an expansion port connected to the expansion bus that is configured to accept the detachable wireless network adapter. Another embodiment of the present invention comprises an electronic device equipped with an external sleeve configured to accept a wireless network adapter insert.

Receivers accommodating frequency band selection methods in wireless communications systems are described. Different frequency bands are associated with different alternative carrier frequencies and/or base station cell and/or sector transmitter connection alternatives. Mobile node receivers include two receiver chains, each chain processing signals corresponding to a carrier. In some embodiments, each receiver chain includes its own controllable RF module, and individual carrier band selection is performed in each RF module. In some embodiments, the two receiver chains share a common RF module; however, each chain includes its own controllable baseband filter. In various embodiments, the first chain has higher complexity than the second chain. In most embodiments, each chain uses the same technology, e.g., spread spectrum OFDM or CDMA. Each chain obtains a quality indicator value on a different band and a comparison of quality indicator values is used in selecting the channel and carrier band for downlink traffic signaling.

An RF interconnect is incorporated in RF module packages for direct attachment onto a multi-layer PWB using compressible center conductor (fuzz button) interconnects. The module has circuitry operating at microwave frequencies. The module package includes a metal housing including a metal bottom wall structure. The module includes a plurality of RF interconnects, which provide RF interconnection between the package and the PWB. Each interconnect includes a feedthrough center pin protruding through an opening formed in the metal bottom wall, with isolation provided by a dielectric feedthrough insulator. The center pin is surrounded with a ring of shield pins attached to the external surface of the bottom wall of the module housing. The pins are insertable in holes formed in the PWB, and make contact with fuzz button interconnects disposed in the holes. Circuitry connects the fuzz button interconnects to appropriate levels of the PWB for grounding and RF signal conduction.

A subscriber identification card performing radio transceiver functionality for long-range applications incorporates a radio transceiver including an antenna formed on a card surface, an RF module and a base-band module. The antenna and the transceiver operate in the microwave/millimetre waves frequency range. This allows meeting the dimensional constraints imposed by the plug-in size and attaining a long-range operation. At least the base-band module might be integrated within the same chip executing standard security related functions for the terminal.

Disclosed herein are a mobile communication terminal equipped with a subscriber identification module and a method of processing an emergency call request in the mobile communication terminal. The mobile communication terminal includes: a keypad; a display unit; a RF module for communicating with a base station; and a controller for performing the overall control of the mobile communication terminal, the controller including: a PIN code input request unit for displaying a PIN code input request on the display unit when terminal booting is requested; a key data analysis unit for analyzing key data inputted through the keypad when the PIN code input request unit requests to input the PIN code; and an emergency call processing unit for searching for the base station and establishing a call connection to the base station when the key data is determined to be an emergency call request by the key data analysis unit.