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| Number | Title | Issue Date |
| 8072287 | Method and system for configurable differential or single-ended signaling in an integrated circuit Aspects of a method and system for configurable differential or single-ended signaling in an integrated circuit. In this regard, a balun comprising one or more loops fabricated in a plurality of metal layers in an integrated circuit may enable conversion between unb... | 12/06/2011 |
| 8035458 | Semiconductor device and method of integrating balun and RF coupler on a common substrate A semiconductor die has an RF coupler and balun integrated on a common substrate. The RF coupler includes first and second conductive traces formed in close proximity. The RF coupler further includes a resistor. The balun includes a primary coil and two secondary co... | 10/11/2011 |
| 8018297 | Balanced-unbalanced conversion circuit A balanced-unbalanced conversion circuit includes a first coupling line, an unbalanced terminal connected to the first coupling line, a ground terminal connected to the unbalanced terminal through the first coupling line, a second coupling line electromagnetically c... | 09/13/2011 |
| 8008987 | Balun circuit manufactured by integrate passive device process A Balun circuit manufactured by integrate passive device (IPD) process. The Balun circuit includes a substrate, a first coplanar spiral structure, and a second coplanar spiral structure. One end of the innermost first left coil of the first coplanar spiral structure... | 08/30/2011 |
| 7994873 | Balun device A balun device including a first to a third inductance elements and a first to a third capacitance elements is provided. The first inductance element has a first end for receiving an input signal and a second end. The second inductance element has a third end and a ... | 08/09/2011 |
| 7978021 | Balanced-to-unbalanced transformer and amplifier circuit module A balanced-to-unbalanced transformer includes a +90° phase shift circuit, which is disposed between a branch point connected to an unbalanced terminal and a first terminal, and a −90° phase shift circuit, which is disposed between the branch point and a second t... | 07/12/2011 |
| 7956702 | Balun A balun having a first balanced terminal, a second balanced terminal and an unbalanced terminal, includes a filter unit and a first transmission line. The filter unit is connected to the first balanced terminal, the second balanced terminal and the unbalanced termin... | 06/07/2011 |
| 7948331 | Thin film balun There is provided a thin film balun which, while incorporating a capacitor used to supply a DC bias, allows improvement of various required characteristics. A thin film balun according to the present embodiment includes: an unbalanced transmission line which include... | 05/24/2011 |
| 7944322 | Method and system for flip chip configurable RF front end with an off-chip balun Methods and systems for a flip chip configurable RF front end with an off-chip balun may include bonding a balun package to a single integrated circuit (IC) comprising an integrated transmitter and a receiver. The balun package may comprise one or more layers and ma... | 05/17/2011 |
| 7863998 | Method and system for processing signals via directional couplers embedded in an integrated circuit package Methods and systems for processing signals via directional couplers embedded in an integrated circuit package are disclosed and may include generating via a directional coupler, one or more output RF signals that may be proportional to a received RF signal. The dire... | 01/04/2011 |
| 7859359 | Method and system for a balun embedded in an integrated circuit package Methods and systems for a balun embedded in an integrated circuit package are disclosed and may include a multi-layer package bonded to an integrated circuit. The multi-layer package may include an integrated balun which may be enabled to process RF signals received... | 12/28/2010 |
| 7847653 | Wide bandwidth microwave balun A wide bandwidth microwave balun utilizes frequency band splitting and two conventional baluns operating in a high frequency band and a low frequency band, which when combined offer a full bandwidth output, thus to offer wide bandwidth impedance matching and second-... | 12/07/2010 |
| 7777589 | Balun transformer A balun transformer includes a first conductive pattern having one end provided as an input/output port of an unbalanced signal, a second conductive pattern electromagnetically coupled to the first conductive pattern and having both ends provided as input/output por... | 08/17/2010 |
| 7692511 | Compact balun transformers Balun transformers are described wherein multiple transformer loops are implemented in a stacked design with the primary and secondary loops overlying one another. By aligning the loops in a vertical direction, instead of offsetting the loops, the area of the device... | 04/06/2010 |
| 7688158 | Digitally tuned, integrated baluns with enhanced linearity for multi-band radio applications An integrated balun includes a low pass filter and a high pass filter that are formed on a semiconductor chip using tunable reactive elements. The outputs of the low pass filter and the high pass filter are tied together to form the single ended output of the balun.... | 03/30/2010 |
| 7683733 | Balun transformer with improved harmonic suppression An electronic assembly includes a substrate (66), a balun transformer (42) formed on the substrate (66) and including a first winding (50) and a second winding (52), each having respective first and second ends, and a reaction circ... | 03/23/2010 |
| 7646259 | Toolless video balun A toolless video balun is disclosed to include a bottom cover shell covered with a top cover shell to hold a circuit board and a BNC connector, two metal terminals bonded to the circuit board with the respective sharp-edged top metal holder portions respectively ins... | 01/12/2010 |
| 7629860 | Miniaturized wide-band baluns for RF applications A wide-band balun device includes a first metallization deposited over a substrate and oriented in a first coil. The first coil extends horizontally across the substrate while maintaining a substantially flat vertical profile. A second metallization is deposited ove... | 12/08/2009 |
| 7570129 | 3D MMIC balun and methods of making the same A three dimensional (3D) monolithic integrated circuit (MMIC) balun and methods of making the same are provided. A primary spiral winding is spaced apart from a secondary primary winding by a gap in a substantially aligned stacked configuration forming a balun. The ... | 08/04/2009 |
| 7567142 | Quasi-balun A quasi-balun circuit for receiving an unbalanced input and providing signals to a balanced-input low noise amplifier (LNA) is provided. Notably, this quasi-balun circuit can provide a phase difference between the positive and the negative terminals of the LNA that ... | 07/28/2009 |
| 7557673 | Wide bandwidth microwave balun A wide bandwidth microwave balun utilizes frequency band splitting and two conventional baluns operating in a high frequency band and a low frequency band, which when combined offer a full bandwidth output, thus to offer wide bandwidth impedance matching and second-... | 07/07/2009 |
| 7449974 | On-chip balun and transceiver using the same and method for fabricating on-chip balun Provided are an on-chip balun, a transceiver using the on-chip balun, and a method for fabricating the on-chip balun. The on-chip balun includes: a first metal winding including a port grounded and a port to which an unbalanced signal is input; a second winding outp... | 11/11/2008 |
| 7391286 | Impedance matching and parasitic capacitor resonance of FBAR resonators and coupled filters A film acoustically-coupled transformer (FACT) has a first and a second stacked bulk acoustic resonator (SBAR 1, SBAR 2). Each SBAR has a stacked pair of film bulk acoustic resonators (FBARs) and an acoustic decoupler between the FBARs. Each FBAR has o... | 06/24/2008 |
| 7388455 | Film acoustically-coupled transformer with increased common mode rejection The film acoustically-coupled transformer (FACT) has a first and second decoupled stacked bulk acoustic resonators (DSBARs). Each DSBAR has a lower film bulk acoustic resonator (FBAR), an upper FBAR atop the lower FBAR, and an acoustic decoupler between them FBARs. ... | 06/17/2008 |
| 7385458 | System method and apparatus for a three-line balun with power amplifier bias A balun that includes a first conductor, a second conductor and a third conductor. The first conductor has a first length. The first conductor also has a first end connected to a first balanced power amplifier output port. The second conductor has substantially the ... | 06/10/2008 |
| 7358815 | Monolithic transformer based amplifier for integrated circuits Monolithic transformer based amplifier for integrated circuits. The amplifier includes an input transformer with a first impedance transforming ratio. The input transformer includes a coupled line structure. An amplification circuit is coupled to the input transform... | 04/15/2008 |
| 7348868 | Passive component having stacked dielectric layers A passive component comprising one input electrode layer constituting an input terminal, one output electrode layer constituting an output terminal, and four shield electrode layers constituting shield terminals, all formed in the lowermost dielectric layer by via h... | 03/25/2008 |
| 7339443 | Common mode radiation inhibit circuit and electronic equipment To provide a common mode radiation inhibit circuit for a differential transmission line which can inhibit quadratic common mode radiation by ensuring a continuity of grand level at a point of change of a signal grand, including a differential transmission line which... | 03/04/2008 |
| 7330085 | Balun with localized components A mode-switching transformer with localized components comprising: between a first common-mode access terminal and a first differential-mode access terminal defining a first path, two LC cells, each formed of an inductance interposed on the first path and of a capac... | 02/12/2008 |
| 7319435 | Balun for an antenna A balun used in high-power applications capable of accommodating a transmission line includes a core with a top surface and a bottom surface formed from soft iron material. At least two holes are provided through the core between the top surface and the bottom surfa... | 01/15/2008 |
| 7301440 | Power line communication system and method The present invention provides a device for providing communications through power lines comprised of multiple conductors by transmitting the data signals through a plurality of the conductors. One embodiment of the present invention may be comprised of a transmit c... | 11/27/2007 |
| 7289566 | Cable modem tuner An IF signal output from an IF amplifying circuit included in a tuner is converted to have a band width for transmission by an SAW filter and has unnecessary signals removed therefrom. Thereafter, the resulting signal has its gain made constant by an IFAGC circuit, ... | 10/30/2007 |
| 7286024 | Voltage-controlled oscillator with differential output A voltage-controlled oscillator for generating differential output is disclosed. The voltage-controlled oscillator comprises a Colpitts oscillator having a first inductor and a capacitive divider having at least two capacitors connected in series. A varactor is conn... | 10/23/2007 |
| 7283793 | Package filter and combiner network A transceiver front end circuit includes an antenna terminal capable of being coupled to an antenna. A first balun circuit has a single input that is coupled to the antenna terminal, and a pair of balanced outputs coupled to a corresponding pair of balanced receiver... | 10/16/2007 |
| 7274267 | Balun A balun in which the phase shift may be reduced significantly is disclosed. The balun has three lines, i.e. a first line b, a second line a and a third line c, arranged in parallel with the ground surface. The second line a and the third line c are arranged at the s... | 09/25/2007 |
| 7274268 | Balun with structural enhancements A balun including a pair of metal coil structures and an intervening dielectric layer having a thickness that is selected in response an operating frequency of the balun. The thickness of the dielectric layer may be used to tune the balun and enhance its self-induct... | 09/25/2007 |
| 7269391 | Tunable transceiver front end A transceiver front end includes a transmit/receive (T/R) switch, a first balun, a second balun, a low noise amplifier, a power amplifier, and compensation circuitry. The T/R switch is operably coupled to an antenna for receiving inbound radio frequency (RF) signals... | 09/11/2007 |
| 7256663 | Balun device, balance filter device, and wireless communication apparatus A balun device, a balance filter device, and a wireless communication apparatus are provided. An intermediate electrode is disposed between a balanced resonance electrode and a GND electrode. More specifically, the balun device includes a pair of GND electrodes form... | 08/14/2007 |
| 7253712 | Integrated high frequency balanced-to-unbalanced transformers Integrated high frequency balanced-to-unbalanced transformers suitable for operation in high frequencies, such as radio frequencies. Embodiments disclosed give consideration to issues related to the layout of the primary and secondary inductors for the minimization ... | 08/07/2007 |
| 7250828 | Compact balun A distributed backwards-wave balun comprising first and second pairs of coupled transmission line sections having one line section of the first coupled pair connected in series with one line section of the second coupled pair. A differential port is connected across... | 07/31/2007 |
