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WO/2007/117383A1 |
A modulation path synchronization apparatus in a polar transmitter includes a modulation path (106, 126) to receive a training waveform (104, 202), a detector (112, 431) coupled to the modulation path, and a processor (116, 218, 436) cou...
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WO/2007/110831A2 |
The present invention relates in general to transferring the envelope information of a polar modulated signal to a varying pulsewidth signal, while the phase modulation is direct transferred to the phase modulation of this PWM signal. Ac...
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WO/2007/102478A1 |
A transmission frequency modulation of wireless communication is made to be possible to correspond to a multiple-value frequency modulation with transmission data of a plurality of bits while a circuit area is suppressed to increase. Whe...
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WO/2007/091134A2 |
A test signal comprising periodic waveform, such as a triangular waveform and sawtooth waveform, is used for propagation delay matching in a transceiver front-end. The test signal is separately fed to the envelope path and the RF path. A...
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WO/2007/083635A1 |
Provided are a PLL modulation circuit, a radio transmission device, and a radio communication device capable of maintaining a modulation accuracy for modulation of a wide band. The PLL modulation circuit (100) includes: a PLL unit (110),...
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WO/2007/076040A2 |
A microwave system for driving a linear accelerator is provided. The inventive microwave system employs a plurality of magnetrons, at least one pulse generator to energize the magnetrons, means for synchronizing outputs from the magnetro...
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WO/2007/071675A1 |
A polar modulation transmitter offers a split architecture for determining amplitude modulation path delay of the transmitter and comprises a split supply modulation circuit and a split power amplifier circuit. The split supply modulatio...
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WO/2007/073150A1 |
A phase shifter circuit (1). The circuit (1) has a poly-phase generator unit (10). The generator (10) is arranged for generating from an input signal I(φ) signals (SI-S4) differing in phase with respect to each other. The poly-phase gen...
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WO/2007/067379A2 |
Modulation of signals includes substantially no side bands in a frequency domain. Circuitry in a communication system of same includes a control signal derived from a carrier, or vice versa, to modulate an input signal. A preferred carri...
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WO/2007/066672A1 |
In a calculation amplifier (1010), an input signal is inputted via a first resistor (R11) to an inversed input terminal. A second resistor (R12) is arranged on a feedback route between an output terminal and a reversed input terminal of ...
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WO/2007/065165A2 |
An audio circuit digitizes raw analog input and uses a digital signal processor (DSP) to filter, modulate, and mix the input to produce a multiplex composite signal. The multiplex composite signal is output from the DSP through a digital...
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WO/2007/063093A1 |
A modulation circuit for use in a radiofrequency transmitter includes a local oscillator circuit configured to generate one or more local oscillator signals at a desired frequency and with a duty cycle at or about twenty-five percent, an...
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WO/2007/063184A1 |
The invention relates to a radio transmitter (100), including means (124) for up-converting an input signal by mixing the input signal with a local oscillation signal, means (128) for extracting an observation signal from the up-converte...
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WO/2007/061799A2 |
A phase lock loop RF modulator system including a phase lock loop circuit having a phase detector circuit responsive to an input reference signal and a feedback signal, an oscillator circuit responsive to the phase detector circuit for p...
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WO/2007/058371A1 |
A multiple path angle modulator includes a closed secondary loop added to a main control loop to automatically adjust a scaling factor related to high frequency gain. The main control loop is configured as a primary path to process the l...
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WO/2007/057804A1 |
The present invention relates to a polar modulation apparatus and method, in which a polar-modulated signal is generated based on separately processed phase modulation (PM) and amplitude modulation (AM) components of an input signal. An ...
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WO/2007/046304A1 |
Provided is an FM modulator which can measure f-V characteristics of a voltage controlled oscillator in a short time. A characteristic measuring timing control section (110) informs a correcting section (108) of starting timing and endin...
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WO/2007/046061A2 |
The present invention relates to a polar modulation apparatus and method, in which an in-phase and a quadrature-phase signal are processed in the analog domain to generate an analog signal corresponding to a derivative of a phase compone...
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WO/2007/040095A1 |
A stereo modulator includes: [1] a multiplexer for generating a multiplexed signal by multiplexing a left signal and a right signal according to a sub carrier, [2] a mixer for generating a composite signal obtained by combining a multipl...
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WO/2007/037719A1 |
The invention relates to information remote transmission and can be used for wire and wireless communication systems, for information encoding and decoding. The positive effect is attainable by using novel method and device for modulatin...
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WO2005060596B1 |
A transmitter circuit (200, 400, 510) includes a power control error data generator (230), a feedforward predistortion data generation (240), feedforward adder logic (250) and the amplifier (210).
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WO/2007/025993A2 |
The invention concerns a device for controlling parameters of a pulse of a high power RF pulse transmitter comprising at least one amplifier characterized in that it includes at least the following components: a transmitted pulse detecto...
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WO/2007/025355A1 |
The present invention is related to a signal modulator circuit comprising: mixing means (1) arranged for being fed with an in-phase and a quadrature component of an input signal and with an in-phase and a quadrature oscillator signal and...
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WO/2007/023866A1 |
There is provided a small-size, low-power-consumption intermittent operation circuit capable of obtaining an output waveform having a rapid rise and fall. The intermittent operation circuit includes an active circuit (106), a first contr...
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WO/2007/021369A2 |
The present invention provides a frequency modulator comprising a phase lock loop circuit (108) for receiving and modulating a carrier signal according to the low frequency component of a modulating signal, the phase lock loop circuit co...
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WO/2007/020714A1 |
A DC offset cancellation circuit used for compensating a carrier leak at an output signal of a modulator has a sign extraction unit for extracting sign of an information signal which is applied to the modulator, an envelope detecting uni...
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WO/2007/005360A1 |
A frequency synthesizer is provided having a fractional-N control circuit and method. The control circuit can operate as having a modulator that selectively applies any fractional ratio to a frequency divider within, for example, a feedb...
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WO/2007/004001A2 |
To reflect advantages of a constant phase modulation waveform, the invention provides a pulse amplitude modulated PAM waveform that is a superposition of Qo≤2L-1 PAM component pulses in each symbol interval such that a significant port...
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WO/2006/130343A2 |
A wireless communication unit (120) polls (200) a radio access point (110) at a certain frequency. The wireless communication unit (120) then determines (210) whether packets are received in response to the polling and determines (220) t...
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WO/2006/127058A2 |
There is provided a system that includes an AC power input port (205) for connection to an AC power line (115), an AC power output port (250) for providing power from the AC power line, an AC power surge suppression circuit (225) for lim...
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WO/2006/127927A1 |
A direct division modulator is provided. The direct division modulator includes a symbol mapper converting the input data from a binary bitstream to a desired frequency deviation, such as where the frequency deviation data encodes the in...
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WO/2006/121946A2 |
An amplitude calibration element comprises a linear driver configured to receive the output of a modulator, the modulator output comprising a voltage signal having an amplitude modulated (AM) portion, a differential detector configured t...
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WO/2006/118056A1 |
A two-point modulation type phase modulating apparatus wherein even when a baseband modulated signal of a wide band is inputted, an RF phase modulated signal having a good modulation precision can be obtained by a simple structure with a...
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WO/2006/115707A2 |
An internal calibration system for a radio frequency (RF) transmitter comprises a digital processing element to generate within a radio frequency (RF) transmitter test points at which an output of the RF transmitter is measured, an RF de...
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WO/2006/115426A1 |
The invention relates to medicine and bioengineering. The inventive method for adjusting biological processes consists in fixing the growth-propagation range boundaries according to the beginning and termination of the curve positive slo...
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WO/2006/113030A2 |
A digital amplitude modulation (AM) transmitter with pulse width modulating RF drive is presented. A plurality of RF amplifiers, each, when turned on, amplifies an applied RF drive signal by the same amount to provide a unit step RF outp...
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WO/2006/096523A1 |
A transmitter upconverts a SSB data signal during a first operational mode using a RP upconverting signal having a frequency that is offset from a center frequency of a channel (&ohgr c) by an amount that depends on the data signal's SSB...
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WO/2006/085585A1 |
A transmission modulation apparatus using a polar modulation of the two-point modulating scheme that can complete the timing adjustment of a BB phase modulation signal and a BB amplitude modulation signal in a short time. In a phase modu...
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WO/2006/068237A1 |
A multimode-based phase modulating apparatus capable of reducing the degradation of modulation precision and suppressing the unnecessary power consumption. The phase modulating apparatus has a switch (9) for switching the modulation mode...
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WO/2006/064425A1 |
A conversion device (CD) is dedicated to conversion of baseband analog I/Q input signals into RF signals in a transmitting path of a wireless communication equipment. This device (CD) comprises i) first (PPl) and second (PP2) processing ...
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WO/2006/063192A1 |
Methods and systems for modulating (508) a radio frequency signal by a continuous-time signal are presented. More particularly, techniques and systems for converting an analog signal (202) to a continuous-time digital signal and using th...
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WO/2006/061213A1 |
The invention relates to a method and to a device for producing an output signal (160) based on a complex, modulated input signal (102) which is divided into an amplitude signal (104) and a phase signal (106), which provide an amplitude ...
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WO/2006/037701A1 |
The invention relates to a polar loop circuit arrangement (1), for the generation and amplification of amplitude and phase modulated signals (f A), comprising at least: a power amplifier (4), an amplitude and a phase-lock loop (1.1, 1.2)...
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WO/2006/035682A1 |
An error calculation circuit used for compensating a carrier leak at an output signal of a mixer has a sign extraction unit for extracting the sign of a baseband signal which is applied to the mixer, an envelope detecting unit for perfor...
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WO/2006/035509A1 |
An error calculation circuit used for compensating a carrier leak at an output signal of a mixer has a sign extraction unit for extracting the sign of a baseband signal which is applied to the mixer, an envelope detecting unit for perfor...
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WO/2006/028607A1 |
Briefly, according to some embodiments of the invention a method and apparatus to generate a filter are provided. The apparatus may include a phase modulation unit to vary a phase component of a signal, a measurement unit to measure a pa...
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WO/2006/014535A2 |
A bandwidth control of sideband energy and compression method applied to the integer cycle methods of modulation, is now disclosed called X padding. Radio Frequency (RF) sine waves are grouped into frames of N cycles (divide-by ratio) wh...
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WO/2006/012270A1 |
Mixing circuitry for quadrature processing in communication systems and related methods are disclosed. The weighted mixing circuitry allows for arbitrary dividers to be utilized in generating the mixing signals for quadrature processing ...
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WO/2006/008672A1 |
Oscillators (10) which oscillate at a fundamental frequency also generate harmonics. The fundamental frequency or a lower harmonic is used for feedback purposes, and a harmonic higher than either the fundamental frequency or the lower ha...
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WO/2006/002510A1 |
A circuit for providing AM/PM modulation is described. The circuit provides two drive signals which are later combined in a constructive/destructive fashion. The circuit provides AM modulation with a drive signal having a consistent powe...
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