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| Application No. | Application Title | Issue Date |
| 20070224964 | SUB-HARMONIC FREQUENCY CONVERSION DEVICE A sub-harmonic frequency conversion device includes: a voltage controlled oscillator for generating first to eighth oscillation frequency (LO) signals having a constant phase difference; a first mixer for performing a switching operation to mix the first to fourth LO si... | 09/27/2007 |
| 20070218858 | Band control apparatus, band control program and band control method A band control apparatus, a band control program and a band control method that control bands takes the cost into consideration. A band control apparatus 1a for relaying signals by using at least one of a plurality of lines 2a, 2b | 09/20/2007 |
| 20070207763 | MIXER CIRCUIT WITH BALANCED FREQUENCY MIXER WITH VARACTOR DIODES In a mixer circuit with a balanced frequency mixer with varactor diodes, a first input signal that exhibits a first input frequency can be fed to the frequency mixer via a first input. Furthermore, a second input signal that exhibits a second input frequency can be fed ... | 09/06/2007 |
| 20070197185 | System and method for reducing odd harmonic mixing in broadband tuners The invention provides a broadband tuner with a reduced odd harmonic mixing and a method for reducing odd harmonic mixing in the broadband tuner. The broadband tuner includes an arrangement of one or more filters, a plurality of mixers and one or more adders. The plural... | 08/23/2007 |
| 20070142018 | LOW NOISE MIXER Disclosed is a mixer comprising: a switching circuit, having a first pair of differential signal nodes and a second pair of differential signal nodes, for switching according to a local oscillation signal; an amplifying stage circuit, for receiving an input signal and a... | 06/21/2007 |
| 20070135076 | Wideband mixer with multi-standard input A wideband mixer circuit that is flexible and reconfigurable so that several identical wideband mixer circuits may be used in lieu of several fixed narrow-band mixers. Such wideband mixer circuits can be provided in multiples within a chip such that multiple inputs are ... | 06/14/2007 |
| 20070129043 | Integrated balun and coupler transformer Integrated balun and coupler is described. In one example, a radio frequency (RF) device includes a balun and coupler. The balun includes a first winding and a second winding arranged on a magnetic core. Respective inputs of the first winding and the second winding are ... | 06/07/2007 |
| 20070105522 | Offset balancer, method of balancing an offset and a wireless receiver employing the balancer and the method The present invention provides an offset balancer for use with a differential mixer employing a wireless reception and an offset quantifier configured to indicate an existing DC offset of the mixer corresponding to an existing second-order intercept point applicable to ... | 05/10/2007 |
| 20070066269 | Balanced circuit arrangement and method for linearizing such an arrangement The present invention relates to a balanced circuit arrangement and methods for linearizing and calibrating such a circuit arrangement, wherein linearization is obtained by introducing a load imbalance between the output branches of the balanced circuit arrangement. Thu... | 03/22/2007 |
| 20060270376 | Mixer circuit, receiver circuit, and frequency comparison circuit A mixer circuit contains a first terminal and a second terminal to which a first differential input signal is applied, and an active element switching a short-circuit between the first terminal and the second terminal. By driving the active element by a second different... | 11/30/2006 |
| 20060258318 | Broadband balanced frequency converter A broadband balanced frequency converter (“BBFC”) in signal communication with a frequency source is disclosed. The BBFC may include a mixer and an active balancing element in signal communication with the mixer. ... | 11/16/2006 |
| 20060252399 | Apparatus and method for digital image correction in a receiver An apparatus and method for performing digital image correction in a receiver. In one embodiment, a receiver circuit may include an IQ signal source configured to provide a digital signal comprising in-phase (I) and quadrature (Q) components, such as an IQ mixer in comb... | 11/09/2006 |
| 20060205377 | Image rejection mixer providing precision image rejection An image rejection mixer includes a first mixer, a second mixer, a first output adjust circuit, and a second output adjust circuit. The first mixer is coupled to receive an input RF signal and a local oscillator signal and includes a first mixer stage and a first output... | 09/14/2006 |
| 20060199561 | Low temperature co-fired ceramic sub-harmonic mixer A sub harmonic mixer has improved electrical performance in a small package size. The mixer has a low temperature co-fired ceramic substrate. Coupled lines are located within the substrate and connected to an LO port, an RF port and an intermediate frequency port. Three... | 09/07/2006 |
| 20060194560 | DC offset calibration for a radio transceiver mixer A mixer for a radio transceiver includes a commutating mixer switch having a first differential input port coupled to a DC offset cancellation path. The first differential input port of the mixer switch includes a first terminal coupled to a first end of a first resisto... | 08/31/2006 |
| 20060164180 | DUAL GATE FINFET RADIO FREQUENCY SWITCH AND MIXER A method modifies dual gate transistor into a radio frequency switch. The method attaches a first signal input to a first gate of the transistor, attaches a second signal input to the source or drain of the transistor, attaches a common gate contact to the first gate an... | 07/27/2006 |
| 20060154640 | Image rejection mixer and terrestrial digital multimedia broadcasting tuner of low intermediate frequency structure using the same Disclosed herein are a terrestrial digital multimedia broadcasting (DMB) tuner of a low intermediate frequency (IF) structure which is applied to a mobile communication terminal, such as a mobile phone, and an image rejection mixer applied thereto. In order to improve i... | 07/13/2006 |
| 20060141970 | Three-phase mixer-system Three-phase mixer-systems comprising at least three groups of mixers (1-4,5-8,9-12,30) for frequency translating signals are (basic idea) provided with balancing means (13-21,31) for suppressing certain mixing products with harm... | 06/29/2006 |
| 20060141976 | Passive reflection mixer In one aspect, a mixer that provides improved isolation between an input oscillator and a mixing cell. In another aspect, a mixer that includes circuitry operative to shape an input signal provided by a local oscillator. ... | 06/29/2006 |
| 20060128344 | Balanced circuit arrangement and method for linearizing such an arrangement The present invention relates to a balanced circuit arrangement and methods for linearizing and calibrating such a circuit arrangement, wherein linearization is obtained by introducing a load imbalance between the output branches of the balanced circuit arrangement. Thu... | 06/15/2006 |
| 20060121873 | Multi-channel radiometer imaging system and MMIC chips for use thereof A MMIC includes at least one quadrature hybrid in a plurality of series connected amplifiers connected in two parallel gain stages and operatively connected to the at least one quadrature hybrid such that gain is equalized in the two parallel gain stages. ... | 06/08/2006 |
| 20060014515 | Dynamically matched mixer system with improved in-phase and quadrature (I/Q) balance and second order intercept point (IP2) performance A dynamically matched mixer system (200) for use in a direct conversion radio frequency (RF) receiver includes a frequency generator (201, 203, 205) that includes plurality of dividers (407) for providing differential local oscillator reference sour... | 01/19/2006 |
| 20050272398 | Low voltage mixer A mixer comprising a pair of low frequency mixer inputs, a pair of high frequency mixer inputs, a pair of mixer outputs, four switching units, each switching unit comprising a low frequency switching unit input, a high frequency switching unit input, a switching unit ou... | 12/08/2005 |
| 20050272397 | Mixer having dynamic biasing A mixer having dynamic biasing, comprises a mixer configured to receive a local oscillator (LO) reference signal and a radio frequency (RF) data signal, and a bias control circuit configured to reduce bias current from the mixer under a low power condition. ... | 12/08/2005 |
| 20050239430 | Harmonic suppression mixer and tuner A harmonic suppression mixer for down converting an RF signal to a complex I and Q baseband signal that uses a plurality of switching mixers each with a gain stage to produce a sinusoidal weighted sum of the mixer outputs. Odd harmonics output by each switching mixer is... | 10/27/2005 |
| 20050191985 | Diode ring configuration for harmonic diode mixers A sub-harmonic mixer having at least one diode ring array used for up-conversion in a transmitter and for down-conversion in a receiver. Each diode ring array has a plurality of (e.g., four) diode rings arranged in parallel. The diode ring array may be connected in para... | 09/01/2005 |
| 20050176398 | Mixer circuit A mixer circuit mixes a target signal with a local oscillation signal to perform frequency conversion of the target signal. Since the mixer circuit uses a pseudo-sine wave as the local oscillation signal, it can carry out stable operation regardless of variations in the... | 08/11/2005 |
| 20050164671 | Reducing active mixer flicker noise A mixer is disclosed that includes first and second transconductance modules that, in one embodiment, includes MOSFETs configured to receive a plurality of signals that are to be mixed and a selectively coupled auxiliary current source to inject an auxiliary current int... | 07/28/2005 |
| 20050159130 | Novel DC offset and IP2 correction for down-conversion mixer Mixers are provided. A mixer includes an output port, a local oscillation input port, a local mixing driving stage, a radio frequency (RF) input port, a RF driving stage, and first to fourth calibration units. The local oscillation input port comprises first and second ... | 07/21/2005 |
| 20050159129 | Image rejection mixer and multiband generator The present invention suppresses a harmonic component without impairing the phase orthogonality of a pair of complex signals. A polyphase filter is configured so that K pieces of filter circuits, each of which comprises a resistor and a capacitor, are connected and +360... | 07/21/2005 |
| 20050130619 | Radio-frequency mixer arrangement The present invention relates to a radio-frequency mixer arrangement in which a differential amplifier is connected to an input on a multiplier. The differential amplifier is arranged together with at least one capacitance in the feedback path of an operational amplifie... | 06/16/2005 |
| 20050118979 | Integrated circuit having a mixer circuit Integrated circuit including a mixer circuit, which has a first circuit section, a second circuit section, and a transformer. The first circuit section has two radiofrequency terminals. The second circuit section has two reference oscillator terminals, an active mixer u... | 06/02/2005 |
| 20050043003 | Passive mixer with improved linearity A mixer circuit in accordance with the invention includes a first mixer stage comprising a first and second transmission gates, and a second mixer stage comprising third and fourth transmission gates. The mixer further includes a first base band signal terminal coupled ... | 02/24/2005 |
| 20050043004 | Communication apparatus, electronic equipment with communication functions, communication function circuit, amplifier circuit and balun circuit A communication apparatus includes, as a plurality of communication functions, an amplifier for amplifying a received signal or a transmitting signal, a balun for converting an unbalanced signal to a balanced signal or converting a balanced signal to an unbalanced signa... | 02/24/2005 |
| 20050037726 | Absorbing sum signal energy in a mixer A frequency mixer that generates out of phase sum signals and uses the out of phase relationship to absorb sum signal energy in an energy absorbing component. A frequency mixer according to the present teachings includes a set of mixing devices that generate a first sum... | 02/17/2005 |
| 20050020231 | Filter-integrated even-harmonic mixer and hi-frequency radio communication device using the same Configuration of a connection between an even-harmonic mixer and a filter is simplified, thereby enabling size reduction. An even-harmonic mixer (21) and a high-frequency bandpass filter (23) are connected to each other via a transmission line (22),... | 01/27/2005 |
| 20050014475 | Device for compensating for a mismatch of a transmitter and a method of compensating for the mismatch A device for compensating for a mismatch of a transmitter and a method of compensating for the mismatch is provided. The device for compensating for a mismatch of an up-converter in a direct conversion transmitter, comprises: a mismatch compensating unit for compensatin... | 01/20/2005 |
