Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8055211 | Method and system for utilizing transmit local oscillator for improved cell search and multi-link communication in multi-mode device A multi-receiver wireless communication device includes a transmitter, a transmit oscillator communicatively coupled to the transmitter, a receive oscillator communicatively coupled to a first receiver and second receiver, and a switching assembly having a first sta... | 11/08/2011 |
| 8005439 | Radio transceiver on a chip An entire radio transceiver can be completely integrated into one IC chip. In order to integrate the IF filters on the chip, a heterodyne architecture with a low IF is used. A single, directly modulated VCO is used for both up-conversion during transmission, and dow... | 08/23/2011 |
| RE42604 | Multimode transceiver circuit A multimode transceiver circuit comprises a four port coupler of a type which splits a signal applied to one port between two of the other ports. The split signals are phase shifted by a known amount. A first port of the coupler is for receiving a signal and for out... | 08/09/2011 |
| 7970358 | Adaptive radio transceiver with a local oscillator An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 06/28/2011 |
| 7697901 | Digital variable gain mixer A method includes controlling a mixer gain to provide a range of selected power output levels from the mixer using a first control scheme for a low portion of the range and using a second control scheme for a high portion of the range. Using the selected mixer gain,... | 04/13/2010 |
| 7469128 | Wideband digital radio with transmit modulation cancellation A microwave radio assembly is described including a directional antenna wherein the installation and aiming is simplified. The assembly is attached to the wall-mount fix via gimbals mechanism with one rotation axis for azimuth and one for elevation and the assembly ... | 12/23/2008 |
| 7421250 | Radio frequency integrated circuit A radio frequency (RF) integrated circuit (IC) includes a local oscillation module, analog radio receiver, analog radio transmitter, digital receiver module, digital transmitter module, and digital optimization module. The local oscillation module is operably couple... | 09/02/2008 |
| 7421251 | Precise frequency generation for low duty cycle transceivers using a single crystal oscillator An apparatus and method for calibrating a non-crystal oscillator in a transceiver unit using a crystal-oscillator includes the step of establishing a time base based upon oscillations of the crystal oscillator. A comparison of the number of oscillations for the non-... | 09/02/2008 |
| 7389087 | Adaptive radio transceiver with filtering An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 06/17/2008 |
| 7386278 | Multi-band mobile communication device Disclosed is a communication apparatus having a small-scale circuit used for modulation. A common transmission image rejection mixer (56) supplies transmission modulation frequencies to a plurality of quadrature modulators (23) (G, D, P, W). Accordingl... | 06/10/2008 |
| 7383025 | Method for processing RF signals for receiving and transmission Methodology for processing of RF signals for receiving and transmission, which varies the frequencies of local oscillators, in order to enable the receivers and transmitters to operate with higher performance in wider or multi-bands. bands. Their integrations into I... | 06/03/2008 |
| 7369816 | Highly accurate temperature sensor employing mixed-signal components A radio transceiver includes circuitry that enables received RF signals to be down-converted to baseband frequencies and baseband signals to be up-converted to RF signals prior to transmission without requiring conversion to an intermediate frequency. The circuitry ... | 05/06/2008 |
| 7366485 | Multimode wireless transmitter and a portable wireless device using the same The circuits of a multimode wireless transmitter are complex and large, and thus difficult to incorporate in a portable wireless device. This problem is solved for a multimode wireless transmitter by enabling the first frequency mode circuit and the second frequency... | 04/29/2008 |
| 7359678 | Signal processing semiconductor integrated circuit device and wireless communication system The invention provides a signal processing semiconductor integrated circuit of the direct conversion system, which includes a dummy amplifier having the same circuit configuration as a low noise amplifier being the first stage amplifier, in which the DC offset calib... | 04/15/2008 |
| 7349717 | Front-end circuit for wireless transmission systems A functional block of a front-end circuit for a communication device, which is employed for multi-band and/or multi-mode operation, is proposed. By positioning, according to this invention, a pin diode switch in one of the parallel signal paths instead of positionin... | 03/25/2008 |
| 7349673 | Adaptive radio transceiver with an antenna matching circuit An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 03/25/2008 |
| 7349672 | Digital signal transceiver A digital signal transceiver includes a frequency modulator for outputting a high-frequency signal frequency-modulated with a digital signal input thereto, a power amplifier, an antenna terminal, and an antenna switch. The antenna switch includes a first branch port... | 03/25/2008 |
| 7349347 | ASK communication device An ASK communication device includes a master station and slave stations connected to the master station through a bus line. The master station includes a transmission unit for ASK-modulating a carrier signal outputted from an oscillation circuit owned thereby and o... | 03/25/2008 |
| 7340233 | Integrated circuit and methods for third sub harmonic up conversion and down conversion of signals An integrated circuit may include a receiver and/or a transmitter that performs third order sub-harmonic conversion. The integrated circuit may include a Gilbert cell active mixer with three or more serially-connected transistors in each of the mixer's four branches... | 03/04/2008 |
| 7333779 | PLL circuit and radio communication terminal apparatus using the same In a PLL circuit, the number of LPFs is reduced to one to reduce mounting area and pin number, and to simplify design. In one embodiment, the PLL circuit includes a variable-gain phase comparator, a mixer, an LPF, VCOs, couplers, and a control circuit to controlling... | 02/19/2008 |
| 7333554 | Communication system with frequency modulation and a single local oscillator A signal processing unit is described relates to a communication system by radio waves with frequency modulation comprising a signal processing unit, a transmission stage for transmitting a transmission signal in response to a modulated control signal and in respons... | 02/19/2008 |
| 7324039 | Short-range automotive radar transceiver Automotive vehicle including a radar transceiver each including a heterodyne active IMPATT multiplier module arranged to receive a signal from a VCO, a first balance mixer arranged to receive a signal from a VCO, a second balance mixer arranged to receive a signal f... | 01/29/2008 |
| 7324789 | PLL frequency synthesizer architecture for low phase noise and reference spurs A frequency synthesizer for use in a transceiver generates a relatively high reference frequency with fine frequency resolution and low in-band phase noise by using a digital processor to generate a digital reference signal at a finely-tuned reference frequency. A D... | 01/29/2008 |
| 7321735 | Optical down-converter using universal frequency translation technology A method and system for converting an optical signal to electrical information signals, including demodulated baseband information signals and modulated baseband signals at multiple harmonics. In an embodiment, the optical information signal is amplitude modulated w... | 01/22/2008 |
| 7319849 | Radio-frequency tuner with differential converter A system for tuning a radio-frequency signal includes a first input path, a second input path, a common reference generator, a selector, a mixer, and a filter. The first input path and the second input path propagate a first single-ended input signal and a second si... | 01/15/2008 |
| 7319716 | Transmitter image suppression in TDD transceivers In a transceiver comprising a time-division-duplex (TDD) of transmit and receive functions, the characteristics of unwanted image signal energy being transmitted from the transceiver are determined, and thereafter feedback is provided to the transmitter to reduce th... | 01/15/2008 |
| 7295826 | Integrated frequency translation and selectivity with gain control functionality, and applications thereof Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtered input signal. The filtering... | 11/13/2007 |
| 7292835 | Wireless and wired cable modem applications of universal frequency translation technology Frequency translation and applications of same are described herein, including cable modem applications. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal reception, unified down-conversion and fil... | 11/06/2007 |
| 7289004 | Dual port modulator The present invention relates generally to the field of frequency modulation, and in particular to dual port frequency modulators. The present invention provides a frequency modulator comprising a phase lock loop circuit (108) for receiving and modulating a c... | 10/30/2007 |
| 7277683 | Regenerative divider for up and down conversion of radio frequency (RF) signals The present invention relates generally to communications, and more specifically to a method and apparatus for generating local oscillator signals used for up- and down-conversion of RF (radio frequency) signals. A major problem in the design of modulators and demod... | 10/02/2007 |
| 7272170 | Single oscillator transceiver A frequency plan is provided for particular use in a transceiver. Advantageously, a single oscillator may be used to generate desired frequency signal. One or more power splitters receive the signal and equally divide the signal into first and second signals having ... | 09/18/2007 |
| 7272373 | Ratiometric clock systems for integrated receivers and associated methods A ratiometric clock system for an integrated receiver and associated method are disclosed that provide an advantageous solution for combining digital signal processing (DSP) circuitry on the same integrated circuit as mixer and local oscillator (LO) generation circu... | 09/18/2007 |
| 7266352 | Multiple band RF transmitters and receivers having independently variable RF and IF local oscillators and independent high-side and low-side RF local oscillators Multistage RF transmitter and receiver circuits may use independently variable RF and IF local oscillators, allowing the RF and IF local oscillator frequencies for a given RF channel to be selected to have a large common factor with respect to the reference oscillat... | 09/04/2007 |
| 7263334 | Directional coupler for use in VCO unequal power splitting A transceiver is provided that includes a TX path mixer that up converts, a RX path mixer that down converts, and a local oscillator that provides a mixing frequency for the TX and RX mixers. The transceiver further provides a directional coupler having an input pat... | 08/28/2007 |
| 7260416 | Shared receive path for simultaneous received signals A method and apparatus are disclosed for a wireless communication device to simultaneously receive at least two signals. Two receiver portions are provided in the wireless communication device. A first receiver portion is configured to receive a first communication ... | 08/21/2007 |
| 7259800 | Television signal receiver with a universal output for surface-acoustic wave filters of different types The invention relates to a television signal receiver comprising a radio-frequency tuner (1) and at least one subsequent surface-acoustic wave filter (2), in which the radio-frequency tuner (1) filters a RF television signal applied to its input... | 08/21/2007 |
| 7240130 | Method of transmitting data through an 12C router A method of transmitting data through an I2C router from a source port to a destination port, the method comprising: receiving data in a first I2C source port buffer of the I2C router; capturing the I2C destination port before the first I2C source port buffer has ov... | 07/03/2007 |
| 7236212 | System and method for providing a low power receiver design An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation and a programable gain low noise amplifier. Frequency conversion circu... | 06/26/2007 |
| 7236740 | Data retransmission apparatus and method in a mobile communication system employing HARQ technique A method and apparatus for retransmitting data in a mobile communication system wherein a receiver determines whether an initial data block received from a transmitter has an error. Upon detecting an error from the initial data block, the receiver estimates a curren... | 06/26/2007 |
| 7233772 | Adaptive radio transceiver with filtering An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 06/19/2007 |
