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Patent No. 5508049

Pizza Pie With Concentric Rings of Crust

A pizza mold for forming a plurality of concentric raised ridges of dough (i.e., crust) on the surface of a pizza pie.

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Class 330/295 - Including plural amplifier channels


Subclass of Class 330 - Amplifiers
Definition: Subject matter having more than one signal transmission
No. of patents: 1015
Last issue date: 05/14/2013


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NumberTitleIssue Date
7129784Multilevel power amplifier architecture using multi-tap transformer
A multi-level power amplifier architecture using a multi-tap transformer implemented on a single CMOS integrated circuit wireless communications device is described. By providing a multi-tap transformer for coupling a plurality of power amplifiers to a shared output...
10/31/2006
7126417Distributed gain network
A system and method for a distribution network is provided wherein cascaded power amplifiers with bypass switching are disposed along the branches of the network. The amplifiers may have an RF modem and a programmable digital computer that enables communication with...
10/24/2006
7123096Quadrature offset power amplifier
An amplifier having a first transistor with an output coupled to a common output node and a switch for coupling a control electrode of the first transistor to a first bias source to bias such first transistor to a conducting state during a relatively high power oper...
10/17/2006
7123087Radio frequency power amplifier
The present invention provides a radio frequency power amplifier which may not introduce radio frequency loss during switching power amplifier units between high and low output power levels. By connecting a first-stage matching network M12 and first-stage mat...
10/17/2006
7119621Power amplifier
A power amplifier for receiving and amplifying an input signal and outputting an output signal includes N power amplifying units (N is an integer larger than 1) connected in parallel so as to output amplified signals in response to the input signal; an output combin...
10/10/2006
7116163Buffer circuit
A buffer circuit comprised of two matched stages is provided. The first stage develops a replica voltage that is used in the second stage as the input to a wide-band amplifier. The combination of the two feedback loops in the circuit result in improved linearity. Th...
10/03/2006
7116170Differential amplifier and calculation amplifier
In a differential amplifier and an operational amplifier each for amplifying a signal, a differential signal composed of first and second signals is inputted to a couple of input terminals (1, 2). When the voltage of the first signal is, e.g., less than the v...
10/03/2006
7113758Automatic gain controller
Disclosed is an automatic gain controller capable of reducing signal saturation or signal distortion caused by out-of-band signals of a filter extracting an object signal or delay of a control signal and capable of precisely measuring a signal level in a filter band...
09/26/2006
7113040Differential amplifier
The input stage of an operational amplifier includes at least four signal-receiving stages adapted to receive four input signals. If the voltage level associated with any of the input signal changes, at least one transistor in each of the at least four signal-receiv...
09/26/2006
7113056Radial power divider/combiner
A radial power divider-combiner is disclosed. The divider-combiner includes a divider and a combiner. An input signal is provided to a transmission antenna that radiates the input signal inside the divider. Within the divider, the input signal is divided into a plur...
09/26/2006
7109790High linearity doherty communication amplifier with integrated output matching unit
A high linearity Doherty power amplifier integrated with output matching circuitry comprised of capacitive elements, inductive elements, and/or shunted transmission lines. In one embodiment, the output matching circuitry is implemented by transmission lines periodic...
09/19/2006
7109791Tailored collector voltage to minimize variation in AM to PM distortion in a power amplifier
A system is provided for substantially reducing variation in AM to PM distortion of a power amplifier caused by variations in RF drive power and temperature. The system includes power control circuitry and power amplifier circuitry. The power amplifier circuitry inc...
09/19/2006
7109822Method and apparatus for rapid prototyping of monolithic microwave integrated circuits
A system is provided for rapidly prototyping monolithic microwave integrated circuit modules to provide an experimental structure that can be physically made to operate by stereolithographically rendering an SLA part directly from the designer's drawings and by coat...
09/19/2006
7106806Reducing distortion of signals
A predistorter (26) comprises an array (44) of band pass filters (46 to 52) which divide an input signal into components. Each of the components is manipulated using coefficients retrieved from respective look-up tables (54 to 6...
09/12/2006
7106130Variable frequency PWM controller circuit
The present invention discloses a circuit that generates a variable frequency pulse width modulation (VF PWM) signal. Different from the conventional PWM controller, the frequency and duty cycle of the output PWM signal vary with the error-amplified voltage of the f...
09/12/2006
7102459Power combiner
A power combiner for the combining of symmetric and asymmetric traveling wave energy comprises a feed waveguide having an input port and a launching port, a reflector for reflecting launched wave energy, and a final waveguide for the collection and transport of laun...
09/05/2006
7103114Modulated radio signal transmitter with self-adapted amplification polarization
The invention relates to a transmitter of radio signals (SMS), which are amplitude-modulated according to a discrete plurality of amplitude levels, in which at least one output power transistor (6) receives, on one of its terminals, a bias-voltage level which...
09/05/2006
7102443Temperature-stabilized amplifier circuit
A circuit for amplifying an input voltage (VIN) into an output voltage (VOUT) with an overall gain factor, which is a product of a first gain factor (S) and a second gain factor (R1), comprises means for generating an intermediate signal (I2) from the ...
09/05/2006
7102444Method and apparatus for compensating and improving efficiency in a variable power amplifier
A method and apparatus for an amplifier, such as a radio frequency amplifier embodiment as an integrated circuit is disclosed. Embodiments provide for operating with good energy efficiency at multiple power levels. Resonant components act to provide consistent opera...
09/05/2006
7099635High-efficiency modulating RF amplifier
The present invention, generally speaking, provides for high-efficiency power control of a high-efficiency (e.g., hard-limiting or switch-mode) power amplifier in such a manner as to achieve a desired modulation. In one embodiment, the spread between a maximum frequ...
08/29/2006
7098741Monolithically integrated power amplifier device
A monolithically integrated microwave amplifier device, comprises an input for receiving a microwave signal, a first power amplifier stage (11; 32) having an input coupled to receive the microwave signal, an impedance matching network (16; 39) coupled ...
08/29/2006
7098740Radio frequency power amplifier and communication system
There is provided not only a radio frequency power amplifier using an SiGe HBT subject to a little amplification distortion, but also a communication system using the same. A conventional radio frequency power amplifier provides base bias paths of transistors Q...
08/29/2006
7098742Differential/single-ended input stage
An input stage for an integrated circuit device provides constant gain in selectable modes of either differential or single-ended operation. In one embodiment, transconductance devices are arranged so that the input impedance of the input stage matches the signal so...
08/29/2006
7098743Cascode amplifier
The present invention refers to a cascode amplifier suitable for amplifying a voltage signal present on the input terminal. The amplifier comprises at least one first transistor comprising a non-drivable input terminal that coincides with the input terminal of the a...
08/29/2006
7098825Fixed offset digital-to-analog conversion device and method
I describe and claim an improved digital-to-analog conversion device and method. The device comprises a current supply circuit to generate a plurality of control currents responsive to a plurality of digital signals. An input voltage generating circuit is adapted to...
08/29/2006
7095276Power amplifier and radio communication device using the amplifier
A power amplifier includes amplifier elements to amplify input signals of different frequencies. The amplifier also includes a power supply circuit that includes a common power supply path including an end connected to a power supply input terminal connected to a DC...
08/22/2006
7095283Supply circuit for power amplifier drivers
An integrated power combiner is disclosed. The power combiner includes a first circular geometry primary winding having one or more inductive elements, such as an active winding with one or more driver stages. A circular geometry secondary winding is disposed adjace...
08/22/2006
7091776Power amplifier and radio communication device using the amplifier
A power amplifier includes amplifier elements to amplify input signals of different frequencies. The amplifier also includes a power supply circuit that includes a common power supply path including an end connected to a power supply input terminal connected to a DC...
08/15/2006
7091778Adaptive wideband digital amplifier for linearly modulated signal amplification and transmission
An apparatus including an amplitude mapping circuit for converting at least a portion of an amplitude signal to a binary value and a plurality of amplifiers coupled to the amplitude mapping circuit, such that the binary value is transmitted to at least one of the pl...
08/15/2006
7092682Electronic circuit, modulation method, information processing device, and information processing method
A shaped-wave application section inputs a first pulse signal corresponding to transmission data output from a transmission data output section, and applies, to a modulation and amplification section, a signal wave corresponding to a second pulse signal such that th...
08/15/2006
7091774Method and apparatus for combining multiple signals for high efficiency applications
Methods and apparatus are provided for efficiently combining and filtering a plurality of input signals into a single combined output signal. M number of input signals are received, combined and filtered by a filter/combiner. The filter/combiner has a plurality of i...
08/15/2006
7092681High output power radio frequency integrated circuit
A high output power radio frequency integrated circuit includes an up conversion module, a plurality of drivers and a plurality of integrated circuit pads. The up conversion module is operably coupled to convert a low intermediate frequency (IF) signal into a radio ...
08/15/2006
7088180Programmable gain current amplifier
A programmable gain current amplifier is provided, including a transistor pair, a plurality of differential pairs, and a control device. The transistor pair receives an input current. Each differential pairs connecting with each other in parallel is connected to the...
08/08/2006
7088185Antenna diversity structure for use in a radio frequency integrated circuit
A radio frequency integrated circuit includes a power amplifier, a low noise amplifier, a first transformer balun, and a second transformer balun. The power amplifier includes a first power amplifier section and a second power amplifier section. When enabled, the fi...
08/08/2006
7081793High-efficiency amplifier, converter and methods
Methods and apparatus are provided for efficiently amplifying or converting a signal. An input signal is decomposed into a plurality of two state signals, each two state signal having a respective on level and off level. This may involve sigma-delta modulation and p...
07/25/2006
7081794Paralleling digital-input amplifiers
Two or more digital-input RF amplifiers are configured in parallel such that a combiner combines their respective outputs to generate a relatively large composite RF output signal. A feedback control architecture minimizes the phase differences between the various a...
07/25/2006
7078976High power Doherty amplifier
A high power Doherty amplifier circuit having at least one input terminal and at least one output terminal comprising at least one carrier transistor (30) forming a main amplifier stage; at least one peak transistor (32) forming a peak amplifier stage;...
07/18/2006
7071774Composite amplifier
A composite amplifier includes a first and a second power amplifier connected to a Chireix output network. A signal component separator and an IQ separator provide equal first and linear drive signal components that depends linearly on the amplitude A(t) of an ampli...
07/04/2006
7072626Polar modulation transmitter
A polar modulation transmitter circuit provides reduced ACPR in its output signal by controlling the relative delay between its envelope and phase modulation operations based on direct or indirect feedback measurement the output signal's ACPR. Such measurement and a...
07/04/2006
7071775Method and apparatus for an enhanced efficiency power amplifier
A power amplifier that includes: an input drive controller (310) for receiving an input signal (312) and for generating from the input signal at least a first drive signal (314), a second drive signal (316), and a third drive signal (3...
07/04/2006
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