CN106817139B - Radio frequency sending set - Google Patents
Radio frequency sending set Download PDFInfo
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- CN106817139B CN106817139B CN201510845959.XA CN201510845959A CN106817139B CN 106817139 B CN106817139 B CN 106817139B CN 201510845959 A CN201510845959 A CN 201510845959A CN 106817139 B CN106817139 B CN 106817139B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/12—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes
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Abstract
The present invention provides a kind of radio frequency sending set.The radio frequency sending set includes: digital analog converter, filter, upper frequency mixer, phaselocked loop and power amplification circuit；Wherein, the input terminal of the output end of digital analog converter and filter connects, and the output end of filter, the output end of phaselocked loop are connect with the input terminal of upper frequency mixer respectively, and the output end of upper frequency mixer and the input terminal of power amplification circuit connect；Control switch is provided in digital analog converter, filter, phaselocked loop and upper frequency mixer；Wherein, when all control switches receive "off" instruction, radio frequency sending set is enhancing data-rate transmission mode transmitter, and when all control switches receive " closed " instruction, radio frequency sending set is super low-power consumption mode transmitter.Radio frequency sending set provided by the invention carries out the switching of both of which by control switch, and the same section in circuit structure component part can be multiplexed, and enormously simplify circuit structure, reduces circuit footprint, reduces costs.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of radio frequency sending sets.
Background technique
In bimodulus bluetooth 4.0, there are two types of (enhancing data-rate transmission mode and super low-power consumption mode) radio frequency hairs of mode
Penetrate machine, enhancing data-rate transmission mode radio frequency sending set by digital analog converter, filter, I/Q upper frequency mixer and power amplifier,
Phaselocked loop etc. is constituted, and super low-power consumption mode RF transmitter is by structures such as phaselocked loop, buffer, prime amplifier and power amplifiers
At in the prior art when system is arranged, the transmitter of both of which independent design on circuit structure is opened by software setting
It closes and is selected to carry out pattern switching by user, circuit structure is complicated, higher cost.
Summary of the invention
The present invention provides a kind of radio frequency sending set, it can be achieved that enhancing the radio frequency of data-rate transmission mode and super low-power consumption mode
Transmitter is structure as a whole on circuit structure, and the switching of both of which is carried out by hardware control switch, and interlock circuit can be with
Multiplexing, to reduce the complexity of circuit structure, save the cost.
Radio frequency sending set provided by the invention, comprising: digital analog converter, filter, upper frequency mixer, phaselocked loop and power are put
Big circuit；Wherein,
The output end of the digital analog converter is connect with the input terminal of the filter, the output end of the filter, institute
The output end for stating phaselocked loop is connect with the input terminal of the upper frequency mixer respectively, the output end of the upper frequency mixer and the power
The input terminal of amplifying circuit connects；
Control switch is provided in the digital analog converter, filter, phaselocked loop and the upper frequency mixer；
Wherein, when all control switches receive "off" instruction, the radio frequency sending set is enhancing data rate transmission
Mode transmitter, when all control switches receive " closed " instruction, the radio frequency sending set is super low-power consumption Mode Launch
Machine.
Further, a control switch is respectively provided in the digital analog converter and the filter, in the phaselocked loop
Two control switches are set, multiple control switches are set in the upper frequency mixer；
When all control switches in the upper frequency mixer receive "off" instruction, the upper frequency mixer is orthogonal mixing
Device, when all control switches in the upper frequency mixer receive " closed " instruction, the upper frequency mixer is buffer.
Further, the upper frequency mixer includes:
First gilbert circuit unit and the second gilbert circuit unit in parallel and load circuit；
The first gilbert circuit unit is defeated including the first positive baseband signal input terminal, the first cathode baseband signal
Enter end, the first local oscillator signal input part, the second local oscillation signal input terminal, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, third metal-oxide-semiconductor, the 4th
Metal-oxide-semiconductor, the 5th metal-oxide-semiconductor and the 6th metal-oxide-semiconductor；
Wherein, the grid and the 4th metal-oxide-semiconductor of the described first positive baseband signal input terminal and first metal-oxide-semiconductor
Grid connection, the grid of first metal-oxide-semiconductor connect first control switch one end, the grid connection second of the 4th metal-oxide-semiconductor
Control switch one end, the grid of the first cathode baseband signal input terminal and second metal-oxide-semiconductor and the third metal-oxide-semiconductor
Grid connection, the grid of second metal-oxide-semiconductor and the third metal-oxide-semiconductor are connected to third control switch one end, and described first
Local oscillation signal input terminal is connect with the grid of the 5th metal-oxide-semiconductor, the second local oscillation signal input terminal and the 6th metal-oxide-semiconductor
Grid connection；
The second gilbert circuit unit is defeated including the second positive baseband signal input terminal, the second cathode baseband signal
Enter end, third local oscillation signal input terminal, the 4th local oscillation signal input terminal, the 7th metal-oxide-semiconductor, the 8th metal-oxide-semiconductor, the 9th metal-oxide-semiconductor, the tenth
Metal-oxide-semiconductor, the 11st metal-oxide-semiconductor and the 12nd metal-oxide-semiconductor；
Wherein, the grid and the tenth metal-oxide-semiconductor of the described second positive baseband signal input terminal and the 7th metal-oxide-semiconductor
Grid connection, the grid of the 7th metal-oxide-semiconductor connect the 4th control switch one end, the grid connection the 5th of the tenth metal-oxide-semiconductor
Control switch one end, the grid of the second cathode baseband signal input terminal and the 8th metal-oxide-semiconductor and the 9th metal-oxide-semiconductor
The grid of grid connection, the 8th metal-oxide-semiconductor and the 9th metal-oxide-semiconductor is connected to the 6th control switch one end, the third
Local oscillation signal input terminal is connect with the grid of the 11st metal-oxide-semiconductor, the 4th local oscillation signal input terminal and the described 12nd
The grid of metal-oxide-semiconductor connects；
Wherein, first control switch and the second control switch other end are connected to power supply, the third control
Switch, the 4th control switch, the 5th control switch, the 6th control switch the other end be grounded.
Further, first control switch in the upper frequency mixer and second control switch multiplexing, it is described
Third control switch, the 4th control switch, the 5th control switch, the 6th control switch multiplexing.
Further, the first gilbert circuit unit further include: for the 13rd metal-oxide-semiconductor as current source,
The drain electrode of 13rd metal-oxide-semiconductor is connect with the source electrode of the source electrode of the 5th metal-oxide-semiconductor and the 6th metal-oxide-semiconductor；
The second gilbert circuit unit further include: for the 14th metal-oxide-semiconductor as current source, the described 14th
The drain electrode of metal-oxide-semiconductor is connect with the source electrode of the source electrode of the 11st metal-oxide-semiconductor and the 12nd metal-oxide-semiconductor.
Further, the institute being arranged in the digital analog converter, the filter, the phaselocked loop and the upper frequency mixer
Have control switch instructed by the same "off" or " closed " instruction control.
It further, further include matching network and antenna, the output end of the power amplification circuit and the matching network
Connection.
Radio frequency sending set provided by the invention can will enhance the electricity of the transmitter of data-rate transmission mode and low-power consumption mode
Line structure is merged, and the switching of both of which, the identical portions in circuit structure component part are carried out by hardware control switch
Dividing can be multiplexed, and if upper frequency mixer, phaselocked loop, power amplification circuit and antenna can be multiplexed, enormously simplify circuit knot
Structure reduces circuit footprint, reduces costs.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of radio frequency sending set embodiment one of the present invention；
Fig. 2 is the structural schematic diagram of the upper frequency mixer in radio frequency sending set embodiment one of the present invention；
Fig. 3 is structural schematic diagram when all switches in upper frequency mixer disconnect；
Fig. 4 is all structural schematic diagrams when closing the switch in upper frequency mixer；
Fig. 5 is the structural schematic diagram of radio frequency sending set embodiment two of the present invention；
Fig. 6 is structural schematic diagram when all control switches of radio frequency sending set of the present invention are closed.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the attached drawing in the present invention, to this
Technical solution in invention is clearly and completely described.
Fig. 1 is the structural schematic diagram of radio frequency sending set embodiment one of the present invention, as shown in Figure 1, the radio frequency of the present embodiment is sent out
The machine of penetrating may include: digital analog converter 11, filter 12, upper frequency mixer 13, phaselocked loop 15 and power amplification circuit 14, wherein
The output end of digital analog converter 11 is connect with the input terminal of filter 12, the output end of the output end of filter 12, phaselocked loop 15
It is connect respectively with the input terminal of upper frequency mixer 13, the output end of upper frequency mixer 13 is connect with the input terminal of power amplification circuit 14.
Control switch is provided in digital analog converter 11, filter 12, phaselocked loop 15 and upper frequency mixer 13.Wherein, all control
When switch receives "off" instruction, radio frequency sending set is enhancing data-rate transmission mode transmitter, and all control switches connect
When receiving " closed " instruction, radio frequency sending set is super low-power consumption mode transmitter.
Specifically, it is respectively provided with a control switch in digital analog converter 11 and filter 12, for controlling digital analog converter
11 and filter 12 whether work normally.Two control switches are set in phaselocked loop 15, for controlling phaselocked loop and upper frequency mixer
Whether two branches of connection work normally, and multiple control switches are arranged in upper frequency mixer 13.All controls in upper frequency mixer 13
When system switch receives "off" instruction, upper frequency mixer 13 is orthogonal mixer, and all control switches in upper frequency mixer 13 connect
When receiving " closed " instruction, upper frequency mixer 13 is buffer.
Wherein, all control switches being arranged in digital analog converter 11, filter 12, phaselocked loop 15 and upper frequency mixer 13 can
It is instructed by the same "off" or " closed " instruction controls, can be configured by software.
Fig. 2 is the structural schematic diagram of the upper frequency mixer in radio frequency sending set embodiment one of the present invention, as shown in Fig. 2, upper mixed
Frequency device 13 includes: the first gilbert circuit unit 101a and the second gilbert circuit unit and load circuit in parallel
101b.Wherein, the first gilbert circuit unit 101a includes the first positive baseband signal input terminal (BB_IP), the first cathode
Baseband signal input terminal (BB_IN), the first local oscillator signal input part (LO_IP) and the second local oscillation signal input terminal (LO_IN),
One metal-oxide-semiconductor M1, the second metal-oxide-semiconductor M2, third metal-oxide-semiconductor M3, the 4th metal-oxide-semiconductor M4, the 5th metal-oxide-semiconductor M5 and the 6th metal-oxide-semiconductor M6.Wherein,
First positive baseband signal input terminal (BB_IP) connect with the grid of the grid of the first metal-oxide-semiconductor M1 and the 4th metal-oxide-semiconductor M4, and first
The grid of metal-oxide-semiconductor M1 connects first one end control switch SW1, and the grid of the 4th metal-oxide-semiconductor M4 connects the second control switch (SW2) one
End, the first cathode baseband signal input terminal (BB_IN) are connect with the grid of the grid of the second metal-oxide-semiconductor M2 and third metal-oxide-semiconductor M3, the
The grid of two metal-oxide-semiconductor M2 and third metal-oxide-semiconductor M3 are connected to third control switch SW3, the first local oscillator signal input part (LO_IP)
It being connect with the grid of the 5th metal-oxide-semiconductor M5, the second local oscillation signal input terminal (LO_IN) is connect with the grid of the 6th metal-oxide-semiconductor M6, and first
Control switch SW1 and the second control switch SW2 other end are connected to power supply.RF_P, RF_N are output end in Fig. 2.
Second gilbert circuit unit 101b includes the second positive baseband signal input terminal (BB_QP), the second cathode base
Band signal input terminal (BB_QN), third local oscillation signal input terminal (LO_QP), the 4th local oscillation signal input terminal (LO_QN), the 7th
Metal-oxide-semiconductor M7, the 8th metal-oxide-semiconductor M8, the 9th metal-oxide-semiconductor M9, the tenth metal-oxide-semiconductor M10, the 11st metal-oxide-semiconductor M11 and the 12nd metal-oxide-semiconductor M12.
Wherein, the grid and the tenth metal-oxide-semiconductor M10 of the second positive baseband signal input terminal (BB_QP) and the 7th metal-oxide-semiconductor M7
Grid connection, the grid of the 7th metal-oxide-semiconductor M7 connect the 4th one end control switch SW4, the grid connection the 5th of the tenth metal-oxide-semiconductor M10
The one end control switch SW5, the grid and the 9th metal-oxide-semiconductor M9 of the second cathode baseband signal input terminal (BB_QN) and the 8th metal-oxide-semiconductor M8
Grid connection, the grid of the 8th metal-oxide-semiconductor M8 and the 9th metal-oxide-semiconductor M9 is connected to the 6th one end control switch SW6, third local oscillator
Signal input part (LO_QP) is connect with the grid of the 11st metal-oxide-semiconductor M11, the 4th local oscillation signal input terminal (LO_QN) and the 12nd
The grid of metal-oxide-semiconductor M12 connects, and third control switch SW3, the 4th control switch SW4, the 5th control switch SW5, the 6th control are opened
The other end for closing SW6 is grounded.
Preferably, the first control switch SW1 in upper frequency mixer and the second control switch SW2 multiplexing, third control switch
SW3, the 4th control switch SW4, the 5th control switch SW5, the 6th control switch SW6 multiplexing.
Further, the first gilbert circuit unit 101a further include: for the 13rd metal-oxide-semiconductor as current source
The drain electrode of M13, the 13rd metal-oxide-semiconductor M13 are connect with the source electrode of the source electrode of the 5th metal-oxide-semiconductor M5 and the 6th metal-oxide-semiconductor M6.Second gill primary
Special circuit unit 101b further include: for the 14th metal-oxide-semiconductor M14 as current source, the drain electrode of the 14th metal-oxide-semiconductor M14 and the
The source electrode connection of the source electrode and the 12nd metal-oxide-semiconductor M12 of 11 metal-oxide-semiconductor M11.
When all switch SW1-SW6 all "off" in upper frequency mixer 13, upper frequency mixer 13 is orthogonal mixer, is such as schemed
Shown in 3, Fig. 3 is structural schematic diagram when all switches in upper frequency mixer disconnect.
When all switch SW1-SW6 all " closed "s in upper frequency mixer 13, upper frequency mixer 13 is buffer (BUFFER),
Fig. 4 is all structural schematic diagrams when closing the switch in upper frequency mixer, as shown in figure 4, the circuit in dotted line does not work.
Fig. 5 is the structural schematic diagram of radio frequency sending set embodiment two of the present invention, as shown in figure 5, the radio frequency of the present embodiment is sent out
Penetrate machine it is shown in Fig. 1 on the basis of, be added to matching network 18.When all control switches receive "off" instruction, on
Frequency mixer 13 is the I/Q orthogonal mixer of standard, realizes signal to be transmitted (BB) and local oscillation signal (LO) mixing, generates radio frequency
(RF) signal gives power amplifier 17, and radio frequency sending set at this time is enhancing data-rate transmission mode transmitter.Enhance data
The course of work of rate transmission mode transmitter are as follows: upper frequency mixer 13 is common mixer architecture, and data to be launched are sent to number
In mode converter 11, after wave filter 12, it is sent to upper frequency mixer 13, using power amplifier 17 and matching network 18 by day
Line is launched.
Fig. 6 is structural schematic diagram when all control switches of radio frequency sending set of the present invention are closed, and control all at this time is opened
Pass receives " closed " instruction, and upper frequency mixer 13 is buffer, while digital analog converter 11 and filter 12 are closed, not work
Make, radio frequency sending set is super low-power consumption mode transmitter at this time.The course of work of super low-power consumption mode transmitter are as follows: number to be launched
Buffer 20 is given according to by phaselocked loop 15, is then launched by power amplifier 17 and matching network 18.
Further, emitted when aforementioned data to be launched are sent out by radio frequency sending set by antenna.
Radio frequency sending set provided in this embodiment can will enhance the transmitter of data-rate transmission mode and super low-power consumption mode
Circuit structure merged, the switching of both of which, the identical portions in circuit structure component part are carried out by control switch
Dividing can be multiplexed, and if upper frequency mixer, phaselocked loop, power amplifier, matching network and antenna can be multiplexed, enormously simplify
Circuit structure reduces circuit footprint, reduces costs.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Meanwhile all of above embodiment is a part of the embodiment of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Claims (7)
1. a kind of radio frequency sending set characterized by comprising digital analog converter, filter, upper frequency mixer, phaselocked loop and power
Amplifying circuit；Wherein,
The output end of the digital analog converter is connect with the input terminal of the filter, the output end of the filter, the lock
The output end of phase ring is connect with the input terminal of the upper frequency mixer respectively, the output end of the upper frequency mixer and the power amplification
The input terminal of circuit connects；
Control switch is provided in the digital analog converter, filter, phaselocked loop and the upper frequency mixer；
Wherein, when all control switches in the upper frequency mixer receive "off" instruction, the upper frequency mixer is orthogonal
Frequency mixer, when all control switches in the digital analog converter receive "off" instruction, the digital analog converter, which is in, to be connected
State is connect, when all control switches in the filter receive "off" instruction, the filter is in connection status, institute
State all control switches in phaselocked loop receive "off" instruction when, the phaselocked loop is in connection status, the phaselocked loop
For generating local oscillation signal, so that the upper frequency mixer, which carries out mixing according to signal to be transmitted and the local oscillation signal, generates radio frequency
Signal, the radio frequency sending set are enhancing data-rate transmission mode transmitter；
When all control switches in the upper frequency mixer receive " closed " instruction, the upper frequency mixer is buffer, institute
State all control switches in digital analog converter receive " closed " instruction when, the digital analog converter is in close state, institute
State all control switches in filter receive " closed " instruction when, the filter is in close state, the phaselocked loop
In all control switches when receiving " closed " instruction, the phaselocked loop be in connection status, and the phaselocked loop is used for will be to
Transmitting signal is converted to radiofrequency signal, and the radio frequency sending set is super low-power consumption mode transmitter.
2. radio frequency sending set according to claim 1, which is characterized in that in the digital analog converter and the filter
One control switch is set, two control switches are set in the phaselocked loop, multiple control switches are set in the upper frequency mixer.
3. radio frequency sending set according to claim 2, which is characterized in that the upper frequency mixer includes:
First gilbert circuit unit and the second gilbert circuit unit in parallel and load circuit；
The first gilbert circuit unit includes the first positive baseband signal input terminal, the input of the first cathode baseband signal
End, the first local oscillator signal input part, the second local oscillation signal input terminal, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, third metal-oxide-semiconductor, the 4th
Metal-oxide-semiconductor, the 5th metal-oxide-semiconductor and the 6th metal-oxide-semiconductor；
Wherein, the described first positive baseband signal input terminal and the grid of first metal-oxide-semiconductor and the grid of the 4th metal-oxide-semiconductor
Connection, the grid of first metal-oxide-semiconductor connect first control switch one end, the second control of grid connection of the 4th metal-oxide-semiconductor
Switch one end, the first cathode baseband signal input terminal and the grid of second metal-oxide-semiconductor and the grid of the third metal-oxide-semiconductor
The grid of connection, second metal-oxide-semiconductor and the third metal-oxide-semiconductor is connected to third control switch one end, first local oscillator
Signal input part is connect with the grid of the 5th metal-oxide-semiconductor, the grid of the second local oscillation signal input terminal and the 6th metal-oxide-semiconductor
Pole connection；
The second gilbert circuit unit includes the second positive baseband signal input terminal, the input of the second cathode baseband signal
End, third local oscillation signal input terminal, the 4th local oscillation signal input terminal, the 7th metal-oxide-semiconductor, the 8th metal-oxide-semiconductor, the 9th metal-oxide-semiconductor, the tenth
Metal-oxide-semiconductor, the 11st metal-oxide-semiconductor and the 12nd metal-oxide-semiconductor；
Wherein, the described second positive baseband signal input terminal and the grid of the 7th metal-oxide-semiconductor and the grid of the tenth metal-oxide-semiconductor
Connection, the grid of the 7th metal-oxide-semiconductor connect the 4th control switch one end, the 5th control of grid connection of the tenth metal-oxide-semiconductor
Switch one end, the second cathode baseband signal input terminal and the grid of the 8th metal-oxide-semiconductor and the grid of the 9th metal-oxide-semiconductor
The grid of connection, the 8th metal-oxide-semiconductor and the 9th metal-oxide-semiconductor is connected to the 6th control switch one end, the third local oscillator
Signal input part is connect with the grid of the 11st metal-oxide-semiconductor, the 4th local oscillation signal input terminal and the 12nd metal-oxide-semiconductor
Grid connection；
Wherein, first control switch and the second control switch other end are connected to power supply, the third control switch,
4th control switch, the 5th control switch, the 6th control switch the other end be grounded.
4. radio frequency sending set according to claim 3, which is characterized in that first control in the upper frequency mixer is opened
Close and second control switch multiplexing, the third control switch, the 4th control switch, the 5th control switch,
The 6th control switch multiplexing.
5. radio frequency sending set according to claim 4, which is characterized in that the first gilbert circuit unit also wraps
It includes: for the 13rd metal-oxide-semiconductor as current source, source electrode and institute of the drain electrode of the 13rd metal-oxide-semiconductor with the 5th metal-oxide-semiconductor
State the source electrode connection of the 6th metal-oxide-semiconductor；
The second gilbert circuit unit further include: for the 14th metal-oxide-semiconductor as current source, the 14th MOS
The drain electrode of pipe is connect with the source electrode of the source electrode of the 11st metal-oxide-semiconductor and the 12nd metal-oxide-semiconductor.
6. radio frequency sending set according to claim 1-5, which is characterized in that the digital analog converter, the filter
All control switches being arranged in wave device, the phaselocked loop and the upper frequency mixer are instructed by the same "off" or " closed " refers to
Enable control.
7. radio frequency sending set according to claim 6, which is characterized in that further include matching network and antenna, the power
The output end of amplifying circuit is connect with the matching network.
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| CN201510845959.XA CN106817139B (en) | 2015-11-27 | 2015-11-27 | Radio frequency sending set |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522955A (en) * | 2011-12-31 | 2012-06-27 | 东南大学 | Mixer |
| CN104718707A (en) * | 2012-10-08 | 2015-06-17 | 高通股份有限公司 | Transmit diversity architecture with optimized power consumption and area for UMTS and LTE systems |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522955A (en) * | 2011-12-31 | 2012-06-27 | 东南大学 | Mixer |
| CN104718707A (en) * | 2012-10-08 | 2015-06-17 | 高通股份有限公司 | Transmit diversity architecture with optimized power consumption and area for UMTS and LTE systems |
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