CN1711735A - Electromagnetic wave transmitter systems, methods and articles of manufacture - Google Patents

Abstract

An electromagnetic wave transmitter system includes a receiver and a transmitter. A baseband processor receives a signal transmission and converts the signal into amplitude and phase polar components. Each component is then processed; the phase component is processed through a wideband phase modulator, and the amplitude component is processed through a wideband amplitude modulator, both processed components are then recombined for further processing or transmission.

Description

Electromagnetic wave transmitter systems, method and product

Technical field

The present invention relates to electromagnetic transmission.More specifically, the present invention relates to a kind of electromagnetic wave transmitter.

Background technology

Electromagnetic wave can be transferred to another place from one by conductor.In wire transmission, conductor is cable or other solid matter normally.In wireless transmission, conductor is ambient substance normally, for example air, water etc.Reflector typically converts electrical energy into signal, then by antenna via carrier wave with the antenna of this signal broadcasting to receiver.Repeater (repeater), intermediate station etc. can be used as transmission intermediary, to keep the integrality of transmitted wave.

Be input to for example generation such as voice, data of certain information (intelligence) that the electric energy in the reflector is generated by the sender usually.By reflector this information is modulated on the carrier wave.The modulated carrier of this moment is the electromagnetic signal of emission.Then, receiver can pass through modulated carrier destructing (deconstruct) is become the copy of the initial information that is sent by reflector, and this signal is carried out demodulation.

Use various technology to come carrier wave is modulated.For example, can be by changing wave characteristic for example amplitude, frequency and phase place, and with the carrier modulation in the wireless transmission to signal.Linear technique is frequency and/or the phase place and the amplitude characteristic of modulation signal typically.Nonlinear technology is the frequency and/or the phase property of modulation signal typically.

Numeral or analogue technique or both combinations can be used with linearity or nonlinear technology.The character of signal-its envelope-can determine to be to use linear technique or nonlinear technology.Constant envelope signals is typically used non-linear transmit technique, and typically is used for non-constant envelope signal than linear transmit technique.

These technology not necessarily independently.For example, reflector may need to support the combination of constant and non-constant envelope scheme, and for example reflector is used for the situation of a plurality of mode of operations (for example, GSM and EDGE).Support the needs of a plurality of burst process schemes to cause the framework of with high costs and inefficiency.Traditionally, the dullness system framework by sub-optimum solution is provided or increase the cost of reflector and many modulation architectures of complexity, and a plurality of modulation schemes in the single reflector are provided.

Thereby if transceiver, reflector and receiver system, method and the product of a plurality of modulation schemes of can offering help, this will be helpful to the electromagnetic transmission technical field.

Summary of the invention

The present invention includes a kind of system, method and product that is used for launching electromagnetic wave and signal.Preferred equipment embodiment comprises: baseband processor is used to receive first signal, and first conversion of signals is become the polar coordinates of being made up of amplitude and phase component; Wideband phase modulator is used for handling by the modulation of carrying out the phase component of first signal on carrier wave; And wideband amplitude modulator, form by the current source that can independently control, be used to handle the range weight of described first signal.

Then, phase component is offered wideband amplitude modulator, so that amplify according to any control that is applied on the current source, and, generate the secondary signal of forming by the phase component and the range weight of first signal.

Description of drawings

In order to illustrate purpose of the present invention, at least one current preferred form shown in the drawings; Yet, should be appreciated that the concrete configuration shown in the invention is not restricted to, ways and means.

Fig. 1 shows the preferred embodiments of the present invention.

Fig. 2 shows the preferred embodiments of the present invention.

Fig. 3 shows the preferred embodiments of the present invention.

Embodiment

Embodiments of the invention comprise equipment, method and the product that is used for launching electromagnetic wave and signal.Embodiments of the invention can be made of hardware, software fully, and/or can be the combination of software and hardware.Thereby the combination of the step of appointed function is carried out in the combination and/or be used to that the combination of the independent piece in the accompanying drawing and piece supports to be used to carry out the device of appointed function.Each piece of accompanying drawing and the combination of the piece of accompanying drawing can adopt multitude of different ways to implement, and this is known for a person skilled in the art.

In particularly preferred embodiment, reflector is exclusively used in application-specific, yet in a particular embodiment, the combination of application also may be expected.Application includes but not limited to: CDMA, CDMA2000, W-CDMA, GSM, TDMA; And the wired and wireless device of other type, for example bluetooth, 802.11a ,-b ,-g, GPS, radar, 1xRTT, radio, GPRS, computer and computer communication complex, handheld device etc.

Should be noted in the discussion above that word " signal " is used for describing usually by information is applied to here for example is applied to data on the electromagnetic wave on the carrier wave and the electromagnetic wave of modulating in some way.Should also be noted that and use " signal " and " ripple " of singulative to comprise a plurality of (perhaps respectively, a plurality of signals and ripple), because frequently, reflector generates a plurality of signals and/or ripple in its course of normal operation.Should also be noted that embodiments of the invention also may be used for input and/or output wave and signal, this is further described below.Should also be noted that word " pulse " is used for describing the component of signal here, thereby signal for example is made up of one or more pulses.Therefore, can exchange use signal, pulse, signal processing and burst process here.Should also be noted that term " circuit " can exchange use with " interface " here, and arbitrary term all is defined as the path of signal.

In a preferred embodiment, Digital Signal Processing is combined with the analog RF circuit, to obtain to cross over the modulation of multiple modulation technique, for example, be used for the GMSK of GSM, the GFSK that is used for DECT and bluetooth, the 8-PSK that is used for EDGE, the OQPSK that is used for IS-2000 and HPSK, π/4 DQPSK that are used for TDMA and the OFDM that is used for 802.11.

The signal envelope that takes place is handled with the special characteristic (for example, constant and non-constant envelope) of baseband signal irrelevant in a preferred embodiment.As mentioned above, therefore, each preferred embodiment of the present invention at first becomes polar coordinates with conversion of signals, and the phase place and the range weight of this signal carried out digital processing, then this signal of reconstruct after the phase place of having handled this signal and range weight.

As described further herein, the reconstruct of phase place and range weight provides the processing flexibility.For example, the non-linear type technology can be used for the phase component of processing signals, carries out Nonlinear Processing because phase component provides constant relatively signal envelope.Like this, compare, can improve transmitter efficiency with using linear type techniques.

The digital processing of amplitude and phase signal, for example shaping pulse and/or image inhibition technology are used to provide the object transmission frequency spectrum, minimize adjacent-channel interference and other bad noise, and other advantage is provided.For example, shaping pulse helps to be implemented in transmission efficiently on the frequency spectrum.For example, in a preferred embodiment, in the CDMA environment, the shaping pulse with related masking spectrum (mask) minimizes ACPR.

Digital processing also provides by the flexibility of reflector processing signals and control.For example, the digital processing of the range weight flexibility of a plurality of burst process schemes that helps to provide support.The digital processing of amplitude and phase component also helps the output spectrum of reflector is carried out shaping, thereby this help provides broadband noise suppress-to minimize (and eliminating in certain embodiments) RF bandpass filtering.As another example, the digital processing of range weight provides control signal envelope statistical value (or level) so that increase the ability that the power output dynamic range keeps suitable band signal quality specification simultaneously.(certainly, in the constant envelope pulse processing scheme embodiment of for example GMSK, can handle by the restricting signal envelope,, thereby realize additional power output dynamic range) with the change fixed envelope level.

In addition, preferred embodiment provides the reconfigurable pulse processing mode of each embodiment.This helps to be implemented in relative transmission (for example, GMSK, HPSK, 0QPSK, OFDM etc.) efficiently on the frequency spectrum for different constant and non-constant envelope signals.Like this, for example, the transceiver and the reflector of preferred embodiment can be used to CDMA signal transmitted, and (for example can be reconfigured, use programmable pulse shaping FIR structure) so that emission GSM signal, wherein the CDMA signal is modulated by amplitude and phase impulse processing scheme, thereby is considered to non-constant envelope signal, and the GSM signal is modulated by frequency or phase modulated, thereby can be considered to constant envelope signals.In other embodiments, also might use keynote system (base modulation) method, modulate at the wideband amplitude modulator place then by using digital-to-analog converter reconstruct in base band.In each embodiment, realize that at Base-Band Processing level place reconfigurable modulation also may be desired.

Fig. 1 shows the transceiver of preferred embodiment.The signal that baseband processor 10 is provided for launching, for example a, or reception will be by the signal of more senior application processing, for example b.Baseband processor 10 is known in the present technique field, for example digital signal processor (15) and microcontroller.Should be noted in the discussion above that in other embodiments can use other signal that device/receiver is provided, for example analog signal provides device, digital signal that device etc. is provided, therefore, baseband processor itself can be unnecessary.In addition, can use the processor of change, for example, not with the processor of digital signal processor component.

In a preferred embodiment, there is the power management module (not shown).Power management module is each assembly in the turn-on and turn-off reflector dynamically, so that save power.Power management module is carried out its judgement to conducting/shutoff specific components according to for example predetermined no activity time section of various standards, from the input of external event such as predefined output power levels, from the gating control signal of baseband processor etc.Any of a plurality of other assemblies of power management module may command.For example, when system sent " emission gating/end " signal, power management operation can be come conducting/shutoff baseband processor, PLL and amplifier with preferred sequence.

In radiating portion, digital signal processor 15 is sent to digitized signal two channel a ' that are made up of I (homophase or phase place) component or Q (quadrature) component.As further described below, these components offer reflector 40 with I, Q pulse.In receiving unit, I, the Q signal that receives offered baseband processor 10 along channel b '.Based on input signal, also respectively by circuit c and d and one or more power control signals are offered receiver 35 and reflector 40.In other embodiments, can provide power control by other assembly that other device for example is included in the reflector embodiment.

Based on input signal, one or more power control signals are sent to voltage gain amplifier 20 (in certain embodiments, it can be a variable gain attenuator) and amplifier 30 by power control interface 11.In this and other preferred embodiment, power control interface 11 can be used as controller.For example, if amplifier 30 comprises one or more bias-level (biasing stage), for example, and three bias-level, then each bias-level will have related control port (not shown) S here _C1, S _C2And S _C3In the present embodiment, power control interface 11 is as controller, and with the control port S of three bias-level _C1, S _C2And S _C3Communication.Generally speaking, power control interface 11 can be used to each bias-level, with the gain of control amplifier 30 and the output of this amplifier.In other embodiments, can install baseband processor 40 for example and/or other assembly of being included in the reflector embodiment provides power control by other.

Get back to the embodiment of Fig. 1 now, the signal of being launched is provided to the shared device of switch (switchplexer) 45 and antenna 48 successively, successively from antenna 48 and the shared device 45 of switch and the signal that is received is provided.Forward Fig. 2 now to, illustrate in greater detail reflector 40.Usually, feed signals to the reflector 40 from direction x.As mentioned above, in present embodiment and other preferred embodiment, digital i/q signal is fed in the reflector.Yet, should be noted in the discussion above that at other embodiment and for example among Simulation with I/Q, can in reflector, finish signal digitalized.

The digitlization of signal produces the signal with homophase (I) and quadrature (Q) component, also these two components is called right angle (rectangular) signal coordinates here.In this and other embodiment, can apply various filtering and other technology to I, Q signal.For example, shown in the embodiment of Fig. 2, use 41 pairs of data of burst process assembly to carry out shaping, so that carry out transmission efficiently on frequency spectrum, just, the feasible possibility minimum that spills into side frequency.In a preferred embodiment, burst process assembly 41 is realized as finite impulse response (FIR).Also can use known other profiled pulses treatment technology in the present technique field, for example infinite impulse response (IIR) filter etc.The preferred embodiment of FIR can comprise the tap and the programmable filter coefficient of configurable number, to support different digital modulation scheme.

Then, convert the right angle signal coordinates to polar coordinates, so that further handle with phase component e and range weight f by utmost point processing components 52.In particularly preferred embodiment, realize conversion by cordic algorithm.In some preferred embodiments, can realize that after conversion AM/AM and/or AM/PM proofread and correct or revise, so that especially solve RF nonlinear effect etc.

Then, handle phase component e and range weight f by independent path.In this and other preferred embodiment, phase component e and range weight f are digital signals, but if desired, then can convert any component or both to analog signal by known the whole bag of tricks in the present technique field.

Phase component e is fed to equalizer 54, its (equilibrium) filter that is modulation compensated.(should be noted in the discussion above that phase component e comprises constant relatively signal envelope) so that carry out Nonlinear Processing.Equalizer 54 provides modulation compensated by amplitude and the phase response that has as the inverse (inverse) of the closed loop response of wideband phase modulator 70.The bandwidth of wideband phase modulator 70 may need to be restricted (for example, less than modulation bandwidth), so that minimize the noise in the output spectrum.Yet, the higher frequency components that limiting bandwidth may attenuated signal by this way.In case of necessity, equalizer 54 compensates this by the gain that increases these higher frequency components, thereby produces the flat frequency response on the modulation bandwidth of signal, and expands modulation bandwidth effectively.Equalizer 54 preferably realizes with digital form, and, as example, can be FIR (finite impulse response) or IIR (infinite frequency response) filter.Equalizer 54 can also be realized with programmable coefficient as required, perhaps realize with other assembly as required.

Must be noted that assembly described here is not considered to restrictive.Just, because the characteristic of Digital Signal Processing, can be used under the situation in the various functional configuration making up piece, any assembly can be used for multiple functional configuration as required.For example, if desired, then equalizer 54 can be realized in wideband phase modulator.

Be used for the wideband phase modulator of preferred embodiment, the phase component as baseband phase information in the input signal carried out suitable frequency modulation(FM), so that it is modulated on the RF carrier wave.Like this, the output of the wideband phase modulator of preferred embodiment is such electromagnetic wave, and it has frequency or phase property that constant amplitude or envelope characteristic and this moment and phase of input signals component depart from its original value relatively.Also can use power control signal to come conditioning signal output, fixing output for example is provided, regulate output etc.

Under the wideband phase modulator of preferred embodiment modulated the signal to situation on the RF carrier wave, in multiband reflector and transceiver, it also provided suitable grating (raster) resolution and frequency band and channel to select.In addition, in particularly preferred embodiment, can use the phase alignment assembly, on various design tolerances, the phase modulated quality be remained in the object transmission specification so that guarantee.In other embodiments, can use known wideband phase modulator in the present technique field, for example, in various embodiments, can use that translation ring (Translational Loop), Direct Digital are synthesized etc.

Fig. 3 illustrates in greater detail the wideband phase modulator 70 of Fig. 2.Wideband phase modulator 70 comprises sigma-delta (Sigma Delta) modulator (SDM) 71, fractional divider (FractionalDivider) 72, phase place-frequency detector 73, low-pass loop filter 74 and voltage controlled oscillator 75.

A reference source 80 preferably is used for providing stable phase place and frequency reference for fractional divider 52 outputs.A reference source 80 can be any electromagnetic wave source that can produce the carrier wave with stable phase angle and frequency reference.

Sigma-delta modulator (SDM) 71 is used for realizing the phase of input signals component is modulated to broadband phase modulated on the carrier wave.In this and other preferred embodiment, use the 3rd rank sigma-delta modulator in conjunction with PLL (generally forming) and equalizer 54, with realization broadband phase modulated and channel selection by 72,73,74 and 75.SDM 71 releases (push out) noise floor (noise floor), and wherein it can carry out enough filtering by the low-pass loop filter of PLL.Because the realized bandwidth of SDM/PLL can be defined as less than modulation bandwidth so that minimize sealing (close-in) phase noise, therefore, equalizer 54 has amplitude and the phase response as the inverse of the closed loop response of PLL that makes up and SDM.Therefore, can expand the modulation bandwidth of wideband phase modulator 70.SDM 71 also can help the variational accurate control of the delay of phase signal (close control), thereby improves systematic function.

SDM 71 preferably includes one or more adder and feedback component series, and it is used to import decimal phases/channels data, and exports digitized integer ordered series of numbers.In the present embodiment, SDM71 is that enough modes dispose with input range for the fractional part of phase data and channel number preferably.The output frequency of voltage controlled oscillator 75 is counted N divided by certain, and it is 72 divider value.71 output is used for shaking the divider value of (dither) 72.The shake of divider 72 allows to realize the multiplication of decimals factor.

Phase place-frequency detector 73 is the relative phase of two signals relatively, and output and the proportional signal of difference between the two.This output signal is used for regulating the frequency of voltage controlled oscillator 75, so that the phase difference of measuring at the phase detectors place goes to zero.Therefore, the phase place of signal is locked by feedback loop, to prevent phase place and the variation of frequency or the harmful signal drift that distortion causes owing to voltage controlled oscillator 75.The output of voltage controlled oscillator 75 is by a multiplication factor and relevant with the output of a reference source 80.Owing to the relative high frequency of a reference source 80 that combines with the little channel resolution requirement of various industrial standards needs this divider.

Feedback signal from voltage controlled oscillator 75 is passed through divider 72.The phase component information that receives from sigma-delta modulator 71 is used for shaking divider between the divider value of certain limit.The shake of divider value is by it phase information to be modulated to mechanism on the carrier wave.Resulting signal is sent to phase place-frequency detector 73, wherein as mentioned above, with this signal with compare from the reference signal of a reference source 80.This comparative result is by low-pass loop filter 74, and wherein, this result is used for generating phase modulated carrier signal by voltage controlled oscillator 75, then, this signal is sent to wideband amplitude modulator 60, so that be reconstructed with range weight f.

In some preferred embodiments, though it is not shown here, but phase modulated carrier signal can be passed through variable gain attenuator (VGA) before reconstruct, perhaps other corrector (for example, voltage gain amplifier) some features with corrected signal for example gain and/or frequency response, to satisfy the dynamic range and the launch requirements of the power output that is suitable for industrial standard.In certain embodiments, also can use bandpass filtering, with further limit wideband noise emissions.

Then, phase modulated carrier signal is fed to wideband amplitude modulator 60, wherein this signal and range weight f is reconstructed.Before describing this reconstruct, the processing to range weight f among the embodiment of review Fig. 2 will be helpful.

Get back to Fig. 2, range weight f is fed to frequency spectrum shaping assembly 53.Frequency spectrum shaping assembly 53 is handled range weight f as required, so that output spectrum is carried out shaping, thereby for example supports a plurality of processing schemes neatly, will be further described this below.In this and other embodiment, range weight can be proofreaied and correct or revise to the frequency spectrum shaping assembly also as required, for example eliminates harmful broadband signal noise.For example, the frequency spectrum shaping assembly can be used as look-up table (LUT) and realizes, it is reconstruction signal according to being included in the interior clauses and subclauses of this table.Other embodiment can use low pass filter, for example FIR, infinite impulse response (IIR) filter, analog filter etc.

Get back to the embodiment of Fig. 2 now, the range weight f that can be considered to the non-constant envelope signal of digitlization is fed to wideband amplitude modulator 60 from frequency spectrum shaping assembly 53.(in certain embodiments, if desired, then can convert it to analog form.)

Wideband amplitude modulator 60 by with the baseband amplitude signal reconstruction on the RF of phase modulated carrier wave, and this baseband amplitude signal is modulated on the RF carrier wave.In this and other preferred embodiment, wideband amplitude modulator 60 can be modulated the signal of the resolution with different bit wides.If desired, also can provide the predistortion factor, and the dynamic manipulation of bias voltage control, to change gain and resulting power output dynamic range.

Forward Fig. 4 now to, it is the diagram of wideband amplitude modulator 60, along path a ^m, by transducer 113, converting the range weight f of input signal to digit pulse, it comprises the position B that is quantized into from highest significant position (" MSB ") to least significant bit (" LSB ") ₀To B _N-1Numeric word.In each embodiment, numeric word can be variable-length.Generally speaking, this word is long more, and then the precision of playback input signal is high more.Modern signal of finger or control that numeric word is provided for decaying in the mode that further describes below and/or amplifies.Certainly, as further described below, in other embodiments, can use the numeric word of various combination and amplitude or other signal characteristic other type derivation and/or provide.

Article 7, control assembly circuit a ^mL-a ^m7 are shown as from transducer 113 and draw.In a preferred embodiment, the number of these control assembly circuits depends on the resolution of word.In this preferred embodiment, word has 7 bit resolutions.Should be noted in the discussion above that in Fig. 4, for the ease of checking that for the purpose of this figure, these control assembly circuits are merged into the individual paths a that is incorporated among the control assembly 122a-g ^mYet in the present embodiment, and as further described below, these control assembly circuits are not merged, but are fed in the control assembly individually.

Path a ^m(as mentioned above, by control assembly circuit a ^m1-a ^m7 form) in control assembly 122a-g, stop.In particularly preferred embodiment, these control assemblys are switching transistors, and current source preferably.Control assembly 122a-g comes switch by the position of the numeric word of exporting from range weight, thereby by the numeric word regulation and control from range weight output.If one is " 1 " or " height ", the control assembly of then conducting correspondence, thus electric current flows to suitable current source 125a-g from this control assembly along bias voltage control line 123a-g.As mentioned above, in each embodiment, the length of numeric word can change, thereby figure place, control assembly, control assembly circuit, driver line, bias voltage control line, current source etc. can correspondingly change.In addition, in each embodiment, need not to be one-to-one relationship between digital word resolution, assembly, circuit and the current source.

If the control assembly conducting, then current source 125a-g is from the control assembly received current, and therefore regulates and control each current source according to this assembly.In particularly preferred embodiment, as further described below, suitable control assembly provides bias current to current source, and, thereby this control assembly can be known as bias control circuit, and a plurality of control assembly can be known as bias network.In certain embodiments, if desired, then may expect to use switching network that one or more bias control circuits are static or dynamically distribute to one or more current sources.

The reconstruct of phase place and range weight takes place in wideband amplitude modulator 60 as mentioned above.Along path a ^pThe phase component of propagating has constant envelope, and promptly it does not have changes in amplitude, but it has the phase property of original input signal x.Phase component passes to driver 124, and driver circuit a subsequently ^p1-a ^p7, therefrom it is fed among the current source 125a-125g, and will be used for drive current source 125a-125g potentially, will be further described this below.

Should be noted in the discussion above that in the present embodiment transistor can be used as current source 125a-125g.In addition, in other embodiments, suitably one or more transistors of dividing can be used as current source 125a-125g.

Each current source is used as potential current source, and can produce the electric current that is output to source lines 126a-g respectively.Each current source can or can not be used as current source, thereby can or can not produce electric current, because it is regulated and control by the numeric word of suitable command signal or regulation and control control assembly.The value that activates any part and produce the numeral that electric current depends on the range weight of regulate and control suitable control assembly suitably from this part.Should be noted in the discussion above that as described here in a preferred embodiment, these current sources are not one or more amplifiers, but these a plurality of current sources are as amplifier.In fact, in a preferred embodiment, amplify and/or decay can be considered to the function of those embodiment, thereby amplifier and/or attenuator can be considered to the electric component or the system of amplifying and/or decaying.In certain embodiments, in wideband amplitude modulator, can there be one or more booster amplifiers.

Combination current by after phase place and the range weight reconstruct, from any electric current sum of current source 125a-g via circuit 126a-g output, is current source output promptly.Therefore, this embodiment can be used as attenuator and/or amplifier, and provides power control so that realize the dynamic range of the power output that various wireless standards are required.In other preferred embodiment, can handle the bias voltage control of any amplifying stage, with the path of change phase modulated carrier signal and the gain in the amplitude path.

From the electric current of each current source and provide the output current of usefulness, between current source, need not other circuit or assembly for combination.Therefore, output and can be as required and as for example amplifier, attenuator, to drive load etc. on circuit 127 as the combination current shown in the z.

In a preferred embodiment, the output of the electric current of current source is different with size.This provides different weights to the electric current that is provided by those current sources potentially.For example, in a preferred embodiment, the size of first current source is the twice of next current source, till the size of this next one current source is again twice of next current source or the like current source to the last again.The number of current source can be complementary with the figure place of digital control word, thus largest current source by the MSB of amplitude word control, next bit control time big current source of this word or the like is till the LSB that sends to minimum current source.Certainly, as mentioned above, other embodiment can have the different patterns that position and current source are complementary, and comprises the use switching network.In addition, in particularly preferred embodiment, provide duplicate current source with same size, and the different current source of size.In other embodiments, can provide other wave characteristic, and regulate and control those current sources thus to other current source.

Should be noted in the discussion above that in a preferred embodiment, with nonlinear way to the current source biasing.Like this, any current source is all worked efficiently.In a preferred embodiment, therefore reduced power consumption.In addition, because as mentioned above according to signal characteristic and the regulate electrical current source, therefore resulting output signal has relative linearity and proportionality accurately with input signal.Like this, in a preferred embodiment, can provide such amplifier, it has the relative efficiency and the power consumption of the relative accuracy and the nonlinear operation of linear operation.In certain embodiments, can there be one or more booster amplifiers as required.In addition, other embodiment can use different amplifiers to replenish and/or substitute amplifier shown in Figure 4.

For example, get back to the embodiment of Fig. 4, if one of making current source 125a-g, then it will be as the non-linear current source with subsidiary relative efficiency.If current source turn-offs, then this current source causes power seldom or does not cause power.Also find out linear character,, thereby provide accurate relatively input signal to reproduce because each current source of conducting provides the current contribution that becomes similar ratio with the amplitude characteristic of input signal.

In the preferred embodiment of Fig. 4, current source 125a-g comprises one or more HBT transistors.Also can use other transistor, for example FET etc., and other current source.Also can insert other assembly, for example variable gain amplifier or attenuator are with the drive current that is reduced to transistor part, along nonlinear component of amplitude path etc.In addition, if use simulation in an embodiment but not digital signal then can correspondingly be used assembly, for example, analog representation will be used single part.

Should be noted in the discussion above that in a preferred embodiment, can getable situation compare that the digitlization of signal (for example, the x among Fig. 2) provides more effective control synchronously to signal when signal reconstruction with other.For example, can getable situation compare, improved control ability and predictive ability, thereby it is possible using digital technology to regulate with other.

Get back to the embodiment of Fig. 2 now, produce output from wideband amplitude modulator 60 then, its expression carrying is included in the amplification carrier wave of any information in the input signal.By present embodiment and other preferred embodiment, it is possible crossing over the linear amplification of big relatively frequency spectrum and/or weakening.

Then, reconstruction signal is sent to antenna 48, so that emission.In other embodiments, signal can be sent to the load beyond the antenna, perhaps except antenna or load, also can use other assembly as required, so that further handle or emission.Also can select loaded line, so that the impedance matching of load to be provided, this is known in the present technique field.Yet, it should be noted that impedance matching is dispensable between wideband amplitude modulator 60 and load, because wideband amplitude modulator 60 is used as current source but not power source.Certainly, in other embodiments, in a single day signal is placed in the load or other circuit of drawing from wideband amplitude modulator 60, just can be through further change, amplify, revise and/or handle.

When needed, embodiment can utilize analog-and digital-assembly, if these embodiment handle ripple and the signal that needs both.For example, cell phone embodiment can be utilized analog-and digital-assembly.Also can utilize various types of system architectures to construct these embodiment.For example, when needed, embodiment or each assembly can provide on semiconductor device, for example, and integrated circuit or application-specific integrated circuit (ASIC) combination; Some examples comprise silicon (Si), SiGe (SiGe) or GaAs (GaAs) substrate.The digital processing of preferred embodiment also allows scalability-for example, can produce current drain and tube core (die) zone with any desired chip size.

Described like this after specific embodiments more of the present invention, various changes, modification and improvement will be easy for a person skilled in the art.Owing to change, modification and improvement that present disclosure becomes apparent, though not specially statement here, they still are considered to the part of this description, and are considered to belong within the spirit and scope of the present invention.Thereby the description of front only is exemplary, rather than restrictive.The present invention is only limited according to the qualification in claims and the equivalent thereof.

Claims (36)

1. one kind is used for method for transmitting, comprising:

-handle the phase component of first signal by wideband phase modulator, on carrier wave, to modulate;

-handle the range weight of described first signal by wideband amplitude modulator, wherein said wideband amplitude modulator is made up of the current source that can independently control;

-described phase component is offered described wideband amplitude modulator, so that amplify according to any control that is applied on the described current source by described wideband amplitude modulator; And,

-secondary signal of being made up of the described phase component and the described range weight of described first signal is provided from described wideband amplitude modulator.

2. the method for claim 1 also comprises: described first conversion of signals is become the polar coordinates of being made up of amplitude and phase component.

3. the method for claim 1 also comprises: receive described first signal by baseband processor.

4. the method for claim 1 also comprises: described first signal is carried out digitlization.

5. the method for claim 1, wherein in described baseband processor, described first signal is carried out digitlization.

6. the method for claim 1, wherein use the modulation scheme of expectation to come to provide described secondary signal from described wideband amplitude modulator.

7. method as claimed in claim 6 also comprises: interchangeable modulation scheme is provided.

8. method as claimed in claim 7 also comprises: the described method for transmitting that is used for is reconfigured to second modulation scheme from first modulation scheme.

9. the optional frequency that the method for claim 1, wherein is used for described carrier wave is modulated to the described phase component of described first signal on the described carrier wave.

10. the method for claim 1, wherein described phase component is offered described wideband amplitude modulator, as constant envelope signals.

11. the method for claim 1, wherein provide described secondary signal with adjustable power output.

12. method as claimed in claim 11 wherein, is regulated described power output by control signal.

13. method as claimed in claim 3 also comprises: one or more power control signals are offered described baseband processor.

14. the method for claim 1 also comprises: one or more power control signals are offered described wideband phase modulator.

15. the method for claim 1 also comprises: one or more power control signals are offered described wideband amplitude modulator.

16. method as claimed in claim 15 also comprises: generate one or more power control signals to one or more parts of described wideband amplitude modulator.

17. the method for claim 1 also comprises: managing power in described reflector.

18. a reflector comprises:

-wideband phase modulator is used for handling by the modulation of carrying out the described phase component of described first signal on carrier wave;

-wideband amplitude modulator is used to handle the described range weight of described first signal, and wherein, described wideband amplitude modulator is made up of the current source that can independently control;

-wherein, described phase component is offered described wideband amplitude modulator, so that amplify according to any control that is applied on the described current source by described wideband amplitude modulator; And, the secondary signal of being made up of the described phase component and the described range weight of described first signal is provided from described wideband amplitude modulator.

19. reflector as claimed in claim 18 also comprises processor, is used for described first conversion of signals is become the polar coordinates of being made up of amplitude and phase component.

20. reflector as claimed in claim 18 also comprises processor, is used for described first signal is carried out digitlization.

21. reflector as claimed in claim 18 also comprises baseband processor, is used to receive first signal.

22. reflector as claimed in claim 18 wherein, carries out digitlization to described first signal in described baseband processor.

23. reflector as claimed in claim 18 wherein, uses the modulation scheme of expectation to come to provide described secondary signal from described wideband amplitude modulator.

24. reflector as claimed in claim 23 also comprises the device that is used to provide interchangeable modulation scheme.

25. reflector as claimed in claim 24 also comprises being used for being used for method for transmitting reconfigures to second modulation scheme from first modulation scheme device with described.

26. reflector as claimed in claim 18 wherein, is used for the optional frequency of described carrier wave, and the described phase component of described first signal is modulated on the described carrier wave.

27. reflector as claimed in claim 18 wherein, offers described wideband amplitude modulator with described phase component, as constant envelope signals.

28. reflector as claimed in claim 18 wherein, provides described secondary signal with adjustable power output.

29. reflector as claimed in claim 28 wherein, is regulated described power output by control signal.

30. reflector as claimed in claim 21 also comprises the power control interface, is used for one or more power control signals are offered described baseband processor.

31. reflector as claimed in claim 18 also comprises the power control interface, is used for one or more power control signals are offered described wideband phase modulator.

32. reflector as claimed in claim 18 also comprises the power control interface, is used for one or more power control signals are offered described wideband amplitude modulator.

33. reflector as claimed in claim 18 also comprises power management module, is used for managing power in described reflector.

34. a chipset comprises:

-baseband processor is used to receive first signal, and described first conversion of signals is become the polar coordinates of being made up of amplitude and phase component;

-wideband phase modulator is used for handling by the modulation of carrying out the described phase component of described first signal on carrier wave;

-wideband amplitude modulator is used to handle the described range weight of described first signal, and wherein, described wideband amplitude modulator is made up of the current source that can independently control;

-wherein, described phase component is offered described wideband amplitude modulator, so that amplify according to any control that is applied on the described current source by described wideband amplitude modulator; And, the secondary signal of being made up of the described phase component and the described range weight of described first signal is provided from described wideband amplitude modulator.

35. chipset as claimed in claim 34 also comprises at least one integrated circuit.

36. a transceiver comprises:

-reflector comprises:

-baseband processor is used to receive first signal, and described first conversion of signals is become the polar coordinates of being made up of amplitude and phase component;

-wideband phase modulator is used for handling by the modulation of carrying out the described phase component of described first signal on carrier wave;

-wideband amplitude modulator is used to handle the described range weight of described first signal, and wherein, described wideband amplitude modulator is made up of the current source that can independently control;

-wherein, described phase component is offered described wideband amplitude modulator, so that amplify according to any control that is applied on the described current source by described wideband amplitude modulator; And, the secondary signal of being made up of the described phase component and the described range weight of described first signal is provided from described wideband amplitude modulator.

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