CN1326614A - High efficiency switched gain power amplifier - Google Patents
High efficiency switched gain power amplifier Download PDFInfo
- Publication number
- CN1326614A CN1326614A CN99813495.3A CN99813495A CN1326614A CN 1326614 A CN1326614 A CN 1326614A CN 99813495 A CN99813495 A CN 99813495A CN 1326614 A CN1326614 A CN 1326614A
- Authority
- CN
- China
- Prior art keywords
- signal
- power amplifier
- switch
- amplifier
- bypass path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001914 filtration Methods 0.000 claims description 46
- 238000000034 method Methods 0.000 claims description 31
- 230000011664 signaling Effects 0.000 claims description 27
- 238000002955 isolation Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims 32
- 230000005540 biological transmission Effects 0.000 claims 2
- 230000003321 amplification Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
- H03G1/0088—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using discontinuously variable devices, e.g. switch-operated
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/60—Amplifiers in which coupling networks have distributed constants, e.g. with waveguide resonators
- H03F3/602—Combinations of several amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/72—Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
- H03F2203/7239—Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal the gated amplifier being switched on or off by putting into parallel or not, by choosing between amplifiers and shunting lines by one or more switch(es)
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Transmitters (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A power amplifier circuit arrangement including a driver amplifier, a switch, an amplifier path having a band pass filter and a power amplifier, and a bypass path which bypasses the power amplifier when excess gain and output power are not needed. When an RF-analog signal from the driver amplifier is switched to the amplifier path, the signal is band-pass filtered and amplified. Then the signal is split into an in-phase and a quadrature signal. Either the in-phase or the quadrature signal is inverted and summed with the other of the in-phase or quadrature signal. When the RF-signal from the driver amplified is switched to the bypass path, the power amplifier is turned off and the bypass path directs the signal to the output of the power amplifier, which appears as a high impedance to the signal. The signal reflects off the power amplifier to the output port.
Description
Technical field
The present invention relates to the power gain control of power amplifier, relate in particular to such as wireless communication devices such as cdma wireless phones.
Background technology
In many electronic environments,, alter a great deal from the dynamic range of the RF power output of mobile unit such as the most of hand communication system that comprises code division multiple access (CDMA) or any type of time division multiple access (TDMA) technology.In the cdma wireless telephone system, under same frequency, send a plurality of signals simultaneously.These signals allow to detect the signal of wanting with different digital code expansions then, and undesired signal occurs as the noise of receiver or the form of interference.Spread spectrum system can bear some and disturb, and has increased whole interference in each station, district by each new interference that mobile radio station added.Each mobile radio station is introduced an exclusive interference level, and it is relevant in the power level that station place, district receives with mobile radio station.
Cdma system uses power control that the phase mutual interference is minimized.For fear of excessively sending signal power (this is the reason of facilitating the whole interference of system), accurate power controls is important.The power of each mobile radio station changes with the number of other user's mobile radio station in the distance between mobile radio station and the base station and this base station or the sector.
In typical portable wireless unit, power amplifier bias AB level, reducing the power consumption during the low transmitted power, but power still constantly is being consumed.Usually, use isolator to come the influence of load impedance in isolated amplifier and the back level.A method avoiding continuous electricity consumption is to utilize switch to walk around the means of amplifier, removes DC power then from amplifier.This method as shown in Figure 7.Shown power amplifier circuit 8 has a power amplifier 32 and an isolator 55.An electrode of first switch 20 is linked in RF input 12 with RF signal to be amplified.When the amplifier conducting, switch 20 is imported 12 inputs of linking power amplifier 32 to RF via path 28.Amplify this RF signal and output to isolator 55, by second switch 42 this signal is sent to the RF output 54 of power amplifier circuit 8 then.In order to walk around power amplifier 32, the first switches 20 bypass path 30 is linked in RF input 12, second switch 42 sends to RF output 54 to this signal.The shortcoming of this technology is the switching loss that amplifier must overcome to be increased when the higher transmitted power of needs.This may cause offseting the benefit of bypass.In addition, use switch and isolator to need more operand power, and it is bigger to manufacture cost.
Fig. 6 illustrates a kind of power amplifier circuit of prior art.By a band pass filter 298 analog signal is fed to first switch 20 from exciting amplifier 280.Switch 20 alternates between bypass path 30 and amplifier path 28, and its intermediate power amplifier 32 amplifies this signal.42 analog signals from the output of bypass path 30 or amplifier 32 of second switch are linked circulator 55, and this circulator 55 is sent to RF output port 54 to this signal by route.
Summary of the invention
This area needs a kind of power amplifier circuit, and not too complexity is also not too expensive by utilizing isolator to make better to save more power and manufacturing for this circuit, thereby allows to remove the second switch that is positioned at the power amplifier back.
An object of the present invention is increases the service efficiency of power amplifier by the combined mechanism of the end port of isolator as bypass network, power amplifier output and RF output port.Structure is exported switch and is become no longer necessary thus.
Another object of the present invention provides a kind of improved power amplifier, and this amplifier needs less parts and manufactures not too complicated.
A further object of the present invention provides a kind of improved power amplifier, and the manufacturing cost of this amplifier is less.
Can realize these and other objects by the present invention who is disclosed here.In power amplifier circuit, bypass network is set, when not needing amplifier gain, to walk around the power amplifier in the circuit.During these low-power operations, disconnect amplifier.This bypass network is made of bypass path and decay path.The decay path allows changeability by using external resistor, and bypass path does not allow changeability.Switch is used for being controlled to amplifier or passes through bypass path or the signal flow in decay path.Signal from bypass network is input to circulator, and circulator sends to this signal the port that links to each other with the output of power amplifier by route.Because power amplifier is separated in the bypass operating period, so amplifier reveals very high impedance to this signal list.Most of input power signals are reflected back toward circulator, and normally export from the RF output port.Use external resistor to combine, provide flexibility to give obtainable gain step size with the decay path.
In another aspect of the present invention, band pass filter places and amplifies the path, thereby filtering is bypassed when power amplifier is bypassed.This has reduced the gain step size size of pattern when amplification becomes bypass.Therefore, exciting amplifier becomes output amplifier, and the later filter of amplifier circuit is used for removing any undesired branch.
Aspect another, when walking around power amplifier, more be difficult to encourage exciting amplifier of the present invention, thereby give and select gain step size that greater flexibility is provided.
Summary of drawings
From below in conjunction with the detailed description that accompanying drawing carried out, the features and advantages of the present invention will be become more obviously, among the figure, identical label provides corresponding expression, wherein:
Fig. 1 is the plane graph of first embodiment of the invention;
Fig. 2 provides wherein can be in conjunction with the block diagram of the mobile radio station spread spectrum transmitter of high efficiency power amplifier of the present invention;
Fig. 3 illustrates the example implementation of the RF transmitter of the spread spectrum transmitter that is included in Fig. 2;
Fig. 4 is the plane graph of second embodiment of the invention;
Fig. 5 is the plane graph of third embodiment of the invention;
Fig. 6 is the plane graph of the amplifier circuit of prior art; And
Fig. 7 is the plane graph of the power amplifier circuit of prior art.
Better embodiment of the present invention
Fig. 1 is the schematic diagram that generality notion of the present invention is shown.Total by label 10 indicated power amplifier circuits comprise power amplifier 32, circulator 52, a series of switch 20,24 and 42 and power amplifier 32 around bypass path 34 and 36.An electrode of first switch 20 is linked in RF input 12 with RF signal to be amplified.When power amplifier conducting and required power amplification, switch 20 is imported 12 inputs of linking power amplifier 32 to RF via path 28.Amplification RF signal and this signal from power amplifier to circulator 52 output.Circulator 52 sends to this signal by route the port of the RF output 54 of power amplifier circuit 10.
When required power amplifier not and its disconnected, switch 20 switched to signal path the bypass network 48 that comprises bypass path 36 and decay path 34.Network sends signal by bypass path 36, and switch 24 and 42 switches to primary importance, thereby signal flow is crossed bypass path 36. Switch 24 and 42 also can switch to signal and flow through decay path 34.From switch 42, signal is sent to the input of circulator 52.Circulator 52 sends to this signal the port that links to each other with the output 50 of power amplifier 32 by route.The output of power amplifier 50 is revealed high impedance to this signal list, thereby signal is reflected back toward circulator 52, and circulator sends to this signal by route the port of the RF output 54 of amplifier circuit 10.
Fig. 2 is illustrated in the schematic diagram that uses power amplifier of the present invention in the signal processing circuit of mobile radio station.In the cdma system of example, utilize the quadrature signaling on mobile radio station one base station link or " oppositely " channel, to provide suitable signal to noise ratio.The data bit 200 that for example is made of the sound (voice) that is converted to data by vocoder is offered encoder 202, convolutional encoding is carried out in these positions here.During less than the position processing speed of encoder 202, can use code symbol to repeat, thereby encoder 202 repeats to import data bit 200 in the bit rate of data, flow so that produce the repeating data of bit rate and the operation rate coupling of encoder 202.In an example embodiment, encoder 202 is with the specified bit rate (R of 11.6 kbps
b) data with clock information 200, the R of generation
b/ r=34.8 code element/second, here, " r " represents the code rate (for example, 1/3) of encoder 202.Then, encoded data are offered block interleaver 204, carry out block interleaving here.
Use 64 yuan of quadrature modulators 206, these code elements are formed comprised log
2The speed of 64=6 code element is (1/r) (R
b/ log
264)=5,800 the character of a character per second has 64 possible characters.In a preferred embodiment, it is 64 Walsh sequence that each character code is become length.That is, each Walsh sequence comprises 64 binary digits or " chip ", and it is 64 Walsh sign indicating numbers of 64 that a group length is arranged.These 64 orthogonal codes are corresponding to the 64 Walsh sign indicating numbers of taking advantage of in 64 the Hadamard matrix, and one of them Walsh sign indicating number is single row or column of this matrix.
The Walsh sequence that modulator 206 is produced offers XOR combiner 208, and here, " covering (cover) " is exclusively used in the PN sign indicating number of a specific mobile radio station or multiplies each other with this PN sign indicating number to this sequence at a combiner place.The PN sign indicating number of this " length " be by PN long code generator 210 according to user PN Long Code Mask with speed R
cProduce.In an example embodiment, long code generator 210 is with the example spreading rate R of 1.2288Mhz
cOperate, thereby each Walsh chip produces four PN chips.The output of XOR combiner 208 is divided into identical signal A and B.Signal A and B are input to the XOR combiner 256 and 254 of following Fig. 3.
Fig. 3 is the schematic diagram that the example implementation of the RF transmitter 250 in the mobile radio station is shown.In the CDMA spread-spectrum is used, by PN
IGenerator 252 and PN
QGenerator 254 is the PN sequence (PN of a pair of weak point
IAnd PN
Q) offer XOR combiner 256 and 258 respectively with output A and B from the XOR combiner 208 of Fig. 2.PN
IAnd PN
QSequence relates separately to homophase (I) and quadrature (Q) communication channel mutually, and their length (32,768 chips) is generally than each length much shorter with head of a household PN sign indicating number.Then, make the I channel code sequence spreading 260 of acquisition and Q channel code sequence spreading 262 pass through baseband filter 264 and 266 respectively.
Digital-to-analog (D/A) transducer 270 and 272 is set, so that digital I channel and Q channel information are converted to analog form respectively.D/ A converter 270 and 272 analog waveforms that produced are offered frequency mixer 288 and 290 respectively with local oscillator (LO) carrier frequency signaling Cos (2 π ft) and Sin (2 π ft) respectively, here these signals are carried out mixing and offer adder 292.Quadrature phase carrier signal Sin (2 π ft) and Cos (2 π ft) are provided by suitable frequency source (not shown).In adder 292 these through the IF of mixing signal plus, and offer frequency mixer 294.
Fig. 4 is the second embodiment of the present invention, and wherein analog signal switches 20 between bypass path 30 and amplifier path 28.Yet bandpass filtering 298 occurs over just in the amplifier path 28.Correspondingly, this signal is carried out bandpass filtering 298 and is fed to power amplifier 32, amplify and send to circulator 55, circulator 55 sends this signal by route to RF output port 54.When first switch 20 commander analog signals during by the amplifier path, circulator 55 is by switch 43 and resistor 45 ground connection and link the output port 54 of circuit.Correspondingly, structure thus, when the RF signal that is reflected or returns when the direction of RF output port 54 enters circulator 55, circulator 55 sends to ground to the signal that is reflected by route by route.When first switch 20 switched to bypass path 30 to this analog signal, second switch 43 was linked circulator 55 to bypass path 30, by route the output of this signal to amplifier was sent.This will show as high impedance, thereby by isolator 55 RF output port 54 be got back in signal reflex.
When not needing high power output, power amplifier 32 disconnects, and first switch 20 switches to bypass path 30, thereby walks around power amplifier 32, and exciting amplifier 280 is as power amplifier.Second switch 43 is linked circulator 55 to bypass path 30.By bypass path 30 input signal of this pattern is sent to circulator 55 by route.Circulator sends to the output of power amplifier 32 to this signal by route, and this signal reflects back into RF output port 54 by isolator 55.
Fig. 5 illustrates the third embodiment of the present invention, exciting amplifier 280 is arranged and to carry out the band pass filter 298 of filtering through amplifying signal before first switch 20.The output that first switch 20 that switches between amplifier path 28 and bypass path 30 switches from band pass filter 298.32 pairs of signals of power amplifier in the amplifier path amplify and this signal are sent to circulator 55, and circulator 55 sends this signal by route to RF output port 54.First switch 20 is sending to the signal through filtering change between amplifier path 28 or the bypass path 30.Comprise second switch 43 in the bypass path, second switch 43 makes circulator 55 ground connection by resistor 45 in first pattern, and second switch 43 is linked bypass path 30 to circulator 55 in second pattern.Resistor 45 can have for example 50 ohm value.
When second switch 43 is in second pattern, any feedback or inverse signal from RF output port 54 are sent to ground by route.When being in first pattern, switch 20 sends to bypass path 30 to this signal, and switch 43 sends to circulator 55 to the signal from bypass path 30.Circulator 55 sends to the output of power amplifier to this signal by route, and power amplifier shows big impedance and most of reflected back circulator 55 of this signal.Then, by route this signal is sent to RF output port 54.Correspondingly, because signal can not be switched to this fact of decay path, so switch 43 adds isolation.Present embodiment is also applicable when only wanting a gain step size.
Any technical staff in this area before provided description, so that can utilize the present invention to preferred embodiment.Various modifications to embodiment will become obviously to those skilled in the art, can be applied to universal principle described here other embodiment and not use creativeness.Thereby, the embodiment shown in the present invention will be not limited to here, and the wide region of principle that will disclose and new feature according to meeting here.
Claims (51)
1. power amplifier circuit layout comprises:
Power amplifier with an input and an output;
The RF input port;
The RF output port;
Walk around the device of power amplifier by one side road network network;
The RF signal from the RF input port between the input of bypass network and amplifier, switch first the device; And
Connect bypass network, the output of power amplifier and the circulator of RF output port, thereby the RF signal that is input to circulator from bypass network is sent to the output of power amplifier by route, and the RF signal that the output from power amplifier is input to the circulator sends to the RF output port by route.
2. the power amplifier circuit shown in claim 1, it is characterized in that when power amplifier is de-energized, first switching device shifter switches to bypass network to the RF signal, thereby the RF signal is walked around power amplifier, send by the output of route by circulator to power amplifier, reflected by power amplifier, and send to the RF output port by route by circulator.
3. the power amplifier circuit shown in claim 1 is characterized in that bypass network comprises second device of decaying the path and switch in a bypass path and between bypass path and decay path.
4. the power amplifier circuit shown in claim 3, the path that it is characterized in that decaying comprise the external resistor of ground connection with the flexibility that allows to provide gain step size.
5. the power amplifier circuit shown in claim 3, it is characterized in that being de-energized and first switching device shifter when RF input port is linked bypass network when power amplifier, and when first switching device shifter switches to bypass path, the RF signal is through bypass path, send to the output of power amplifier by route by circulator, reflected by power amplifier and send to the RF output port by route by circulator.
6. the power amplifier circuit shown in claim 3, it is characterized in that being de-energized and first switching device shifter when RF input port is linked bypass network when power amplifier, and when second switching device shifter switches to the decay path, the RF signal is through the overdamping path, send to the output of power amplifier by route by circulator, reflected by power amplifier and send to the RF output port by route by circulator.
7. the power amplifier circuit shown in claim 4, it is characterized in that being powered on and first switching device shifter when RF input port is linked the input of power amplifier when power amplifier, second switching device shifter switches to circulator to the decay path, so that reverse isolation is maximum and prevent vibration.
8. the power amplifier circuit shown in claim 4 is characterized in that external resistor is the gain-adjusted variable resistance.
9. have in the power amplifier circuit of circulator of RF input port and a RF output port, bypass network, the output of linking this bypass network, power amplifier and RF output one, a kind of method of dynamic range maximum that makes may further comprise the steps:
Make the power amplifier outage;
The RF signal is switched to bypass network from the RF input port;
By circulator the RF signal from bypass path is sent to power amplifier by route;
Circulator is returned in the substantive partial reflection of the RF signal that incides power amplifier output;
By route the RF signal of reflection is sent to the RF output port by circulator.
10. power amplifier circuit layout comprises:
Be used to send the exciting amplifier of RF analog signal;
Described RF analog signal between bypass path and amplifier path, switch first the device;
Be arranged in the band pass filter in described amplifier path, described band pass filter carries out filtering to described RF analog signal and produces signal through filtering;
Be arranged in the power amplifier in described amplifier path, described power amplifier amplifies to produce through amplifying signal described signal through filtering;
Circulator sends to RF output port described through amplifying signal by route;
When described first switching device shifter switches to described bypass path, described bypass path is linked described circulator to the output of described exciting amplifier, wherein said bypass path is linked described circulator, thereby the described RF analog signal input from described bypass path to described circulator is sent to described power amplifier by route;
Be arranged in second switching device shifter of described bypass path, described second switching device shifter is being connected described bypass path and switching between the ground by resistor to described circulator, thereby when the described second switching device shifter ground connection, the power that direction from the RF output port is turned back to this circuit sends to ground by route, to isolate described power amplifier circuit layout.
11. a power amplifier circuit layout comprises:
Be used to send the exciting amplifier of RF analog signal;
Being used for of being positioned carries out filtering and produces band pass filter through the signal of filtering described RF analog signal;
Described signal through filtering between bypass path and amplifier path, switch first the device;
Be arranged in the power amplifier in described amplifier path, described power amplifier amplifies to produce through amplifying signal described signal through filtering;
Circulator sends to RF output port described through amplifying signal by route;
When described first switching device shifter switches to described bypass path, described bypass path is linked described circulator to the output of described band pass filter, wherein said bypass path is linked described circulator, thereby the described signal input through filtering from described bypass path to described circulator is sent to described power amplifier by route;
Be arranged in second switching device shifter of described bypass path, described second switching device shifter is being connected described bypass path and switching between the ground by resistor to described circulator, thereby when the described second switching device shifter ground connection, the power that direction from the RF output port is turned back to this circuit sends to ground by route, to isolate described power amplifier circuit layout.
12. power amplifier circuit layout as claimed in claim 11 is characterized in that also comprising the device of controlling described first and second switching device shifters.
13. power amplifier circuit layout as claimed in claim 11 is characterized in that described resistor is similar to 50 ohm.
14. power amplifier circuit layout as claimed in claim 10 is characterized in that when described power amplifier is turned off described first switching device shifter switches to described bypass path.
15. power amplifier circuit layout as claimed in claim 11 is characterized in that when described power amplifier is turned off described first switching device shifter switches to described bypass path.
16. a power amplifier circuit layout comprises:
Be used to send the exciting amplifier of analog signal;
First switch that analog signal is optionally switched between bypass path and amplifier path, described amplifier path comprises:
Described analog signal is carried out filtering and produced band pass filter through the signal of filtering;
Reception is through the signal of filtering and produce power amplifier through amplifying signal;
First hybrid circuit is be divided into in-phase signal and orthogonal signalling through amplifying signal; And
Second hybrid circuit, counter-rotating in-phase signal to be producing the signal through counter-rotating, and to through the signal of counter-rotating and orthogonal signalling summation with the generation summing signal,
When described first switch switches to described bypass path to analog signal, described bypass path links to each other the isolated port of the output of described exciting amplifier with described second hybrid circuit, sends to an output port thereby will be reflected from the analog signal that described exciting amplifier sends from described power amplifier and by route.
17. circuit layout as claimed in claim 1 is characterized in that also comprising:
Be arranged in the second switch of described bypass path; And
Link the terminating resistor of an electrode of described second switch,
Described second switch optionally links to each other the isolated port of described second hybrid circuit with described first switch or described terminating resistor.
18. circuit layout as claimed in claim 1 is characterized in that analog signal is a radio frequency analog signal.
19. power amplifier circuit layout as claimed in claim 1 is characterized in that when described power amplifier is turned off described first switch switches to described bypass path to analog signal.
20. a power amplifier circuit layout comprises:
Be used to send the exciting amplifier of analog signal;
First switch that analog signal is optionally switched between bypass path and amplifier path, described amplifier path comprises:
Described analog signal is carried out filtering and produced band pass filter through the signal of filtering;
Reception is through the signal of filtering and produce power amplifier through amplifying signal;
First hybrid circuit is be divided into in-phase signal and orthogonal signalling through amplifying signal; And
Second hybrid circuit, counter-rotating orthogonal signalling to be producing the signal through counter-rotating, and to through the signal of counter-rotating and in-phase signal summation with the generation summing signal,
When described first switch switches to described bypass path to analog signal, described bypass path links to each other the isolated port of the output of described exciting amplifier with described second hybrid circuit, sends to an output port thereby will be reflected from the analog signal that described exciting amplifier sends from described power amplifier and by route.
21. circuit layout as claimed in claim 5 is characterized in that also comprising:
Be arranged in the second switch of described bypass path; And
Link the terminating resistor of an electrode of described second switch,
Described second switch optionally links to each other the isolated port of described second hybrid circuit with described first switch or described terminating resistor.
22. circuit layout as claimed in claim 5 is characterized in that analog signal is a radio frequency analog signal.
23. power amplifier circuit layout as claimed in claim 3 is characterized in that when described power amplifier is turned off described first switch switches to described bypass path to analog signal.
24. one kind be amplified in have exciting amplifier, the method for the signal in the circuit of amplifier path and bypass path, described amplifier path comprises first switch, band pass filter, power amplifier, first hybrid circuit and second hybrid circuit, described bypass path is linked first switch to the isolated port of described second hybrid circuit, and described method comprises:
(A) produce pumping signal from exciting amplifier;
(B) use first switch that pumping signal is optionally switched between amplifier path and bypass path,
Wherein when in described switch step pumping signal being switched to the amplifier path, described method is further comprising the steps of:
(a) by band pass filter pumping signal is carried out bandpass filtering to produce the signal through filtering;
(b) by power amplifier the signal through filtering is amplified to produce through amplifying signal;
(c) handle is divided into in-phase signal and orthogonal signalling through amplifying signal in first hybrid circuit;
(d) in second hybrid circuit, reverse in-phase signal to produce signal through counter-rotating; And
(e) in second hybrid circuit, signal and orthogonal signalling through counter-rotating are sued for peace with the generation summing signal,
Wherein when in described switch step pumping signal being switched to bypass path, described method is further comprising the steps of:
(a) power amplifier is turn-offed;
(b) pumping signal is sent to the isolated port of second hybrid circuit;
(c) pumping signal reflection from the output of power amplifier and the output port that arrives.
25. method as claimed in claim 9 is characterized in that this circuit also comprises the second switch that is arranged in bypass path, described method also comprises:
Second switch is being linked the isolated port of second hybrid circuit terminating resistor and the isolated port of second hybrid circuit is being linked optionally switching between first switch.
26. method for amplifying signal as claimed in claim 9 is characterized in that pumping signal is a radio frequency analog signal.
27. one kind be amplified in have exciting amplifier, the method for the signal in the circuit of amplifier path and bypass path, described amplifier path comprises first switch, band pass filter, power amplifier, first hybrid circuit and second hybrid circuit, described bypass path is linked first switch to the isolated port of described second hybrid circuit, and described method comprises:
(A) produce pumping signal from exciting amplifier;
(B) use first switch that pumping signal is optionally switched between amplifier path and bypass path,
Wherein when in described switch step pumping signal being switched to the amplifier path, described method is further comprising the steps of:
(a) by band pass filter pumping signal is carried out bandpass filtering to produce the signal through filtering;
(b) by power amplifier the signal through filtering is amplified to produce through amplifying signal;
(c) handle is divided into in-phase signal and orthogonal signalling through amplifying signal in first hybrid circuit;
(d) in second hybrid circuit, reverse in-phase signal to produce signal through counter-rotating; And
(e) in second hybrid circuit, signal and orthogonal signalling through counter-rotating are sued for peace with the generation summing signal,
Wherein when in described switch step pumping signal being switched to bypass path, described method is further comprising the steps of:
(a) power amplifier is turn-offed;
(b) pumping signal is sent to the isolated port of second hybrid circuit;
(c) pumping signal reflection from the output of power amplifier and the output port that arrives.
28. method as claimed in claim 12 is characterized in that this circuit also comprises the second switch that is arranged in bypass path, described method also comprises:
Second switch is being linked the isolated port of second hybrid circuit terminating resistor and the isolated port of second hybrid circuit is being linked optionally switching between first switch.
29. method for amplifying signal as claimed in claim 12 is characterized in that pumping signal is a radio frequency analog signal.
30. a power amplifier circuit layout comprises:
Be used to send the exciting amplifier of analog signal;
First switch that analog signal is optionally switched between bypass path and amplifier path, described amplifier path comprises:
Described analog signal is carried out filtering and produced band pass filter through the signal of filtering;
First hybrid circuit is divided into in-phase signal and orthogonal signalling to the signal through filtering;
In-phase signal is amplified to produce first power amplifier of first amplifying signal;
Quadrature signal is amplified to produce second power amplifier of second amplifying signal; And
Second hybrid circuit, first amplifying signal that reverses to be producing the signal through counter-rotating, and the signal through counter-rotating is sued for peace with second amplifying signal,
When described first switch switched to described bypass path to analog signal, described bypass path linked to each other the isolated port of the output of described exciting amplifier with described second hybrid circuit.
31. a power amplifier circuit layout comprises:
Be used to send the exciting amplifier of analog signal;
First switch that analog signal is optionally switched between bypass path and amplifier path, described amplifier path comprises:
Described analog signal is carried out filtering and produced band pass filter through the signal of filtering;
First hybrid circuit is divided into in-phase signal and orthogonal signalling to the signal through filtering;
In-phase signal is amplified to produce first power amplifier of first amplifying signal;
Quadrature signal is amplified to produce second power amplifier of second amplifying signal; And
Second hybrid circuit, second amplifying signal that reverses to be producing the signal through counter-rotating, and the signal through counter-rotating is sued for peace with first amplifying signal,
When described first switch switched to described bypass path to analog signal, described bypass path linked to each other the isolated port of the output of described exciting amplifier with described second hybrid circuit.
32. power amplifier circuit layout as claimed in claim 15 is characterized in that analog signal is a radio frequency analog signal.
33. power amplifier circuit layout as claimed in claim 16 is characterized in that analog signal is a radio frequency analog signal.
34. power amplifier circuit layout as claimed in claim 15 is characterized in that when power amplifier is turned off described switch switches to described bypass path.
35. power amplifier circuit layout as claimed in claim 16 is characterized in that when power amplifier is turned off described switch switches to described bypass path.
36. circuit layout as claimed in claim 15 is characterized in that also comprising:
Be arranged in the second switch of described bypass path; And
Link the terminating resistor of an electrode of described second switch,
Described second switch optionally links to each other the isolated port of described second hybrid circuit with described first switch or described terminating resistor.
37. circuit layout as claimed in claim 16 is characterized in that also comprising:
Be arranged in the second switch of described bypass path; And
Link the terminating resistor of an electrode of described second switch,
Described second switch optionally links to each other the isolated port of described second hybrid circuit with described first switch or described terminating resistor.
38. circuit layout as claimed in claim 15 is characterized in that also comprising:
First diverting switch between described first power amplifier and described second hybrid circuit; And
Second diverting switch between described second power amplifier and described second hybrid circuit;
Described first and second diverting switchs are used for when using described bypass path respectively the output steering of described first and second power amplifiers.
39. circuit layout as claimed in claim 16 is characterized in that also comprising:
First diverting switch between described first power amplifier and described second hybrid circuit; And
Second diverting switch between described second power amplifier and described second hybrid circuit;
Described first and second diverting switchs are used for when using described bypass path respectively the output steering of described first and second power amplifiers.
40. one kind be amplified in have exciting amplifier, the method for the signal in the circuit of amplifier path and bypass path, described amplifier path comprises first switch, band pass filter, first power amplifier, second power amplifier, first hybrid circuit and second hybrid circuit, described bypass path links to each other the isolated port of described second hybrid circuit with first switch, described method comprises:
(A) produce pumping signal from exciting amplifier;
(B) use first switch that pumping signal is optionally switched between amplifier path and bypass path,
Wherein when in described switch step pumping signal being switched to the amplifier path, described method is further comprising the steps of:
(a) by band pass filter pumping signal is carried out bandpass filtering to produce the signal through filtering;
(b) in first hybrid circuit, the signal through filtering is divided into in-phase signal and orthogonal signalling;
(c) by first power amplifier in-phase signal is amplified to produce through the amplified in-phase signal;
(d) amplify to produce orthogonal signalling by the second power amplifier quadrature signal through amplifying;
(e) in second hybrid circuit, reverse through the amplified in-phase signal to produce signal through counter-rotating; And
(f) in second hybrid circuit, signal and the orthogonal signalling through amplifying through counter-rotating are sued for peace with the generation summing signal,
Wherein when in described switch step pumping signal being switched to bypass path, described method also comprises:
(a) first power amplifier and second power amplifier are turn-offed;
(b) pumping signal is sent to the isolated port of second hybrid circuit;
(c) in second hybrid circuit, pumping signal is divided into in-phase signal and orthogonal signalling;
(d) in-phase signal is reflected from first amplifier signal;
(e) orthogonal signalling are reflected from second power amplifier;
(f) in second hybrid circuit counter-rotating through the in-phase signal of reflection to produce signal through counter-rotating;
(g) in second hybrid circuit, signal and orthogonal signalling through counter-rotating are sued for peace to produce summing signal; And
(h) summing signal is outputed to an output port.
41. one kind be amplified in have exciting amplifier, the method for the signal in the circuit of amplifier path and bypass path, described amplifier path comprises first switch, band pass filter, first power amplifier, second power amplifier, first hybrid circuit and second hybrid circuit, described bypass path links to each other the isolated port of described second hybrid circuit with first switch, described method comprises:
(A) produce pumping signal from exciting amplifier;
(B) use first switch that pumping signal is optionally switched between amplifier path and bypass path,
Wherein when in described switch step pumping signal being switched to the amplifier path, described method is further comprising the steps of:
(a) by band pass filter pumping signal is carried out bandpass filtering to produce the signal through filtering;
(b) in first hybrid circuit, the signal through filtering is divided into in-phase signal and orthogonal signalling;
(c) by first power amplifier in-phase signal is amplified to produce through the amplified in-phase signal;
(d) amplify to produce orthogonal signalling by the second power amplifier quadrature signal through amplifying;
(e) in second hybrid circuit orthogonal signalling of counter-rotating through amplifying to produce signal through counter-rotating; And
(f) in second hybrid circuit, sue for peace with the generation summing signal to signal with through the amplified in-phase signal through reversing,
Wherein when in described switch step pumping signal being switched to bypass path, described method also comprises:
(a) first power amplifier and second power amplifier are turn-offed;
(b) pumping signal is sent to the isolated port of second hybrid circuit;
(c) in second hybrid circuit, pumping signal is divided into in-phase signal and orthogonal signalling;
(d) in-phase signal is reflected from first amplifier signal;
(e) orthogonal signalling are reflected from second power amplifier;
(f) in second hybrid circuit counter-rotating through the orthogonal signalling of reflection to produce signal through counter-rotating;
(g) in second hybrid circuit, signal and in-phase signal through counter-rotating are sued for peace to produce summing signal; And
(h) summing signal is outputed to an output port.
42. method for amplifying signal as claimed in claim 25 is characterized in that pumping signal is a radio frequency analog signal.
43. method for amplifying signal as claimed in claim 26 is characterized in that pumping signal is a radio frequency analog signal.
44. method as claimed in claim 25 is characterized in that this circuit also comprises the second switch that is arranged in bypass path, described method also comprises:
Second switch is being linked the isolated port of second hybrid circuit terminating resistor and the isolated port of second hybrid circuit is being linked optionally switching between first switch.
45. method as claimed in claim 26 is characterized in that this circuit also comprises the second switch that is arranged in bypass path, described method also comprises:
Second switch is being linked the isolated port of second hybrid circuit terminating resistor and the isolated port of second hybrid circuit is being linked optionally switching between first switch.
46. a mobile comm unit has power supply, digital processing unit, reception chain, sends chain, duplexer, antenna and user's interface device, described mobile comm unit comprises:
Power amplifier circuit layout in the described transmission chain, described power amplifier circuit layout comprises:
Be used to send the exciting amplifier of analog signal;
First switch that analog signal is optionally switched between bypass path and amplifier path, described amplifier path comprises:
Described analog signal is carried out filtering and produced band pass filter through the signal of filtering;
Reception is through the signal of filtering and produce power amplifier through amplifying signal;
First hybrid circuit is be divided into in-phase signal and orthogonal signalling through amplifying signal; And
Second hybrid circuit, counter-rotating in-phase signal to be producing the signal through counter-rotating, and to through the signal of counter-rotating and orthogonal signalling summation with the generation summing signal,
When described first switch switches to described bypass path to analog signal, described bypass path links to each other the isolated port of the output of described exciting amplifier with described second hybrid circuit, sends to an output port thereby will be reflected from the analog signal that described exciting amplifier sends from described power amplifier and by route.
47. mobile comm unit as claimed in claim 31 is characterized in that described power amplifier circuit layout also comprises:
Be arranged in the second switch of described bypass path; And
Link the terminating resistor of an electrode of described second switch,
Described second switch optionally links to each other the isolated port of described second hybrid circuit with described first switch or described terminating resistor.
48. mobile comm unit as claimed in claim 31 is characterized in that when described power amplifier is turned off described first switch switches to described bypass path to analog signal.
49. a mobile comm unit has power supply, digital processing unit, reception chain, sends chain, duplexer, antenna and user's interface device, described mobile comm unit comprises:
Power amplifier circuit layout in the described transmission chain, described power amplifier circuit layout comprises:
Be used to send the exciting amplifier of analog signal;
First switch that analog signal is optionally switched between bypass path and amplifier path, described amplifier path comprises:
Described analog signal is carried out filtering to produce the band pass filter through the signal of filtering;
First hybrid circuit is divided into in-phase signal and orthogonal signalling to the signal through filtering;
In-phase signal is amplified to produce first power amplifier of first amplifying signal;
Quadrature signal is amplified to produce second power amplifier of second amplifying signal; And
Second hybrid circuit, first amplifying signal that reverses to be producing the signal through counter-rotating, and the signal through counter-rotating is sued for peace with second amplifying signal,
When described first switch switched to described bypass path to analog signal, described bypass path linked to each other the isolated port of the output of described exciting amplifier with described second hybrid circuit.
50. mobile comm unit as claimed in claim 34 is characterized in that described power amplifier circuit layout also comprises:
Be arranged in the second switch of described bypass path; And
Link the terminating resistor of an electrode of described second switch,
Described second switch optionally links to each other the isolated port of described second hybrid circuit with described first switch or described terminating resistor.
51. mobile comm unit as claimed in claim 34 is characterized in that described power amplifier circuit layout also comprises:
First diverting switch between described first power amplifier and described second hybrid circuit; And
Second diverting switch between described second power amplifier and described second hybrid circuit;
Described first and second diverting switchs are used for when using described bypass path respectively the output steering of described first and second power amplifiers.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/158,456 | 1998-09-22 | ||
| US09/158,456 US6060949A (en) | 1998-09-22 | 1998-09-22 | High efficiency switched gain power amplifier |
| US09/248,048 | 1999-02-10 | ||
| US09/248,048 US6208202B1 (en) | 1998-09-22 | 1999-02-10 | High efficiency switched gain power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1326614A true CN1326614A (en) | 2001-12-12 |
Family
ID=26855042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99813495.3A Pending CN1326614A (en) | 1998-09-22 | 1999-09-22 | High efficiency switched gain power amplifier |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1116325A1 (en) |
| JP (1) | JP2002525951A (en) |
| CN (1) | CN1326614A (en) |
| AU (2) | AU6154899A (en) |
| CA (1) | CA2345089A1 (en) |
| WO (2) | WO2000018004A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101904104A (en) * | 2007-12-17 | 2010-12-01 | 松下电器产业株式会社 | Amplifying circuit with bypass circuit, and electronic device using the same |
| WO2013189424A2 (en) * | 2013-05-14 | 2013-12-27 | 中兴通讯股份有限公司 | Radio-frequency power amplification circuit, control method and terminal |
| CN104852749A (en) * | 2014-02-19 | 2015-08-19 | 华为终端有限公司 | Radio frequency circuit and terminal equipment |
| CN105353295A (en) * | 2015-12-01 | 2016-02-24 | 无锡比迅科技有限公司 | Operation amplifier gain measurement circuit |
| CN106330121A (en) * | 2015-07-02 | 2017-01-11 | 株式会社村田制作所 | Amplification circuit |
| CN110708040A (en) * | 2019-10-14 | 2020-01-17 | 中国科学院微电子研究所 | Matched filtering equipment |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6806768B2 (en) | 2001-10-31 | 2004-10-19 | Qualcomm Incorporated | Balanced power amplifier with a bypass structure |
| US7902925B2 (en) * | 2005-08-02 | 2011-03-08 | Qualcomm, Incorporated | Amplifier with active post-distortion linearization |
| JP2011004556A (en) * | 2009-06-22 | 2011-01-06 | Mitsubishi Electric Corp | Power supply device for vehicle |
| US9281976B2 (en) | 2014-02-04 | 2016-03-08 | Texas Instruments Incorporated | Transmitter and method of transmitting |
| CN104485894A (en) * | 2014-11-12 | 2015-04-01 | 广州中大微电子有限公司 | Common-mode level shift treatment circuit and method for operational amplifier |
| CN114244378B (en) * | 2021-12-13 | 2023-05-16 | 遨海科技有限公司 | VDES transmitter capable of dynamically outputting power |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3857106A (en) * | 1970-09-04 | 1974-12-24 | Bell Telephone Labor Inc | Amplifier with n-port signal excitation |
| US4010426A (en) * | 1975-11-12 | 1977-03-01 | The United States Of America As Represented By The Secretary Of The Air Force | Rf power amplifier parallel redundant system |
| GB8517180D0 (en) * | 1985-07-06 | 1985-08-14 | W & G Instr Ltd | High frequency switched attenuator |
| US5093667A (en) * | 1989-10-16 | 1992-03-03 | Itt Corporation | T/R module with error correction |
| DE59009594D1 (en) * | 1990-06-28 | 1995-10-05 | Siemens Ag | Pulse power amplifier. |
| JPH04129309A (en) * | 1990-09-19 | 1992-04-30 | Matsushita Electric Ind Co Ltd | Amplifier circuit |
| JPH07115331A (en) * | 1993-10-19 | 1995-05-02 | Mitsubishi Electric Corp | Amplifying device |
| JPH09148852A (en) * | 1995-11-24 | 1997-06-06 | Matsushita Electric Ind Co Ltd | Transmission output variable device |
| US5974041A (en) * | 1995-12-27 | 1999-10-26 | Qualcomm Incorporated | Efficient parallel-stage power amplifier |
| JPH09232815A (en) * | 1996-02-23 | 1997-09-05 | Kokusai Electric Co Ltd | Variable attenuator for high frequency |
| US5973557A (en) * | 1996-10-18 | 1999-10-26 | Matsushita Electric Industrial Co., Ltd. | High efficiency linear power amplifier of plural frequency bands and high efficiency power amplifier |
| JP2000078035A (en) * | 1998-09-01 | 2000-03-14 | Matsushita Electric Ind Co Ltd | Transmission circuit and its method |
-
1999
- 1999-09-22 AU AU61548/99A patent/AU6154899A/en not_active Abandoned
- 1999-09-22 AU AU61549/99A patent/AU772636B2/en not_active Ceased
- 1999-09-22 CA CA002345089A patent/CA2345089A1/en not_active Abandoned
- 1999-09-22 WO PCT/US1999/021757 patent/WO2000018004A1/en active Application Filing
- 1999-09-22 JP JP2000571558A patent/JP2002525951A/en active Pending
- 1999-09-22 EP EP99948347A patent/EP1116325A1/en not_active Ceased
- 1999-09-22 CN CN99813495.3A patent/CN1326614A/en active Pending
- 1999-09-22 WO PCT/US1999/021758 patent/WO2000018005A1/en active IP Right Grant
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101904104A (en) * | 2007-12-17 | 2010-12-01 | 松下电器产业株式会社 | Amplifying circuit with bypass circuit, and electronic device using the same |
| CN101904104B (en) * | 2007-12-17 | 2013-04-17 | 松下电器产业株式会社 | Amplifying circuit with bypass circuit, and electronic device using the same |
| WO2013189424A2 (en) * | 2013-05-14 | 2013-12-27 | 中兴通讯股份有限公司 | Radio-frequency power amplification circuit, control method and terminal |
| WO2013189424A3 (en) * | 2013-05-14 | 2014-04-10 | 中兴通讯股份有限公司 | Radio-frequency power amplification circuit, control method and terminal |
| CN104852749A (en) * | 2014-02-19 | 2015-08-19 | 华为终端有限公司 | Radio frequency circuit and terminal equipment |
| WO2015124090A1 (en) * | 2014-02-19 | 2015-08-27 | 华为终端有限公司 | Radio-frequency circuit and terminal device |
| CN104852749B (en) * | 2014-02-19 | 2018-01-16 | 华为终端（东莞）有限公司 | Radio circuit and terminal device |
| CN106330121A (en) * | 2015-07-02 | 2017-01-11 | 株式会社村田制作所 | Amplification circuit |
| CN105353295A (en) * | 2015-12-01 | 2016-02-24 | 无锡比迅科技有限公司 | Operation amplifier gain measurement circuit |
| CN110708040A (en) * | 2019-10-14 | 2020-01-17 | 中国科学院微电子研究所 | Matched filtering equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002525951A (en) | 2002-08-13 |
| WO2000018005A1 (en) | 2000-03-30 |
| WO2000018004A1 (en) | 2000-03-30 |
| AU6154999A (en) | 2000-04-10 |
| EP1116325A1 (en) | 2001-07-18 |
| AU6154899A (en) | 2000-04-10 |
| AU772636B2 (en) | 2004-05-06 |
| CA2345089A1 (en) | 2000-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1798856B1 (en) | Power amplifier with bypass path | |
| CN1332510C (en) | Multi-frequency band, multi-mode radio receiver, and associated method, having shared circuit elements | |
| EP0837565B1 (en) | IS-95 compatible wideband communication scheme | |
| KR100955843B1 (en) | One bit digital quadrature modulator | |
| KR100208648B1 (en) | Method and device for digital processing signals in a radio frequency communication system | |
| KR100372858B1 (en) | Method and apparatus for modulation dependent signal amplification | |
| CN1326614A (en) | High efficiency switched gain power amplifier | |
| JP3614439B2 (en) | Practical means for digital generation and combining of multiple CDMA / FDMA signals | |
| EP0829970B1 (en) | Dual mode transceiver for TDMA and FDD modes | |
| CN1795616A (en) | Multi-band and multi-mode mobile terminal for wireless communication systems | |
| CN1957575A (en) | Fully digital transmitter including a digital band-pass sigma-delta modulator | |
| CN101379706B (en) | Conversion of multiple analog signals in an analog to digital converter | |
| EP1992135B1 (en) | Rf transmitter with interleaved iq modulation | |
| CN1175176A (en) | Multi-frequency band mobile unit communication equipment | |
| US20140218104A1 (en) | Power amplification device | |
| JPH0964667A (en) | Amplifier | |
| EP2043377B1 (en) | A sector base station | |
| US20070247239A1 (en) | Phase modulator | |
| JPH06350484A (en) | Dual mode amplifier network | |
| KR20000052544A (en) | Code phase setting method and apparatus | |
| CN1728568B (en) | Transmission apparatus and peak reduction method | |
| CN1322408A (en) | Transmission over bundled channels in CDMA mobile radio system | |
| JP2699554B2 (en) | Hot standby standby transmission switching method | |
| CN101826904A (en) | Method for realizing system capacity expansion by utilizing polarization diversity receiving | |
| RU2108646C1 (en) | Transmitting array |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| C10 | Entry into substantive examination | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: WD Ref document number: 1039693 Country of ref document: HK |