TW201431278A - Amplifying module and wireless communication device using the same - Google Patents

Abstract

The present disclosure relates to an amplifying module and wireless communication device using the same. The amplifying module includes a first input terminal, a first filtering unit, a first amplifying unit, a first output terminal, and control unit. The first input terminal, the first filtering unit, the first amplifying unit and the first output terminal are electrically connected in series. The control unit is electrically connected to the first filtering unit and the first amplifying unit. The first input terminal inputs a first frequency band signal and a second frequency band signal to the control unit. The control unit controls the first filtering unit to select one of the firs frequency band signal and the second frequency band signal to the first amplifying unit, and outputs from the first output terminal.

Description

Power amplification module and wireless communication device with the power amplification module

The invention relates to a power amplifying module and a wireless communication device with the power amplifying module, in particular to a power amplifying module which can be used for multi-frequency and a wireless communication device with the power amplifying module.

The power amplifier is one of the indispensable components for wireless communication device to realize radio frequency transmission. In order to realize multi-frequency mobile communication, it may be necessary to set multiple power amplifiers to amplify signals in different modes and frequency bands. If the communication system can be realized in different modes and frequency bands, sharing the power amplifier can effectively simplify the structure of the wireless communication device and save manufacturing costs.

In view of this, it is necessary to provide a power amplifying circuit that can be used in a multi-frequency communication system.

In addition, it is necessary to provide a wireless communication device having the above power amplifying circuit.

A power amplifying module and a wireless communication device having the power amplifying module, the power amplifying module comprising a first input end electrically connected in series, a first filtering unit, a first amplifying unit and a first output end, and the a first filtering unit and a control unit connected to the first amplifying unit; the first input end inputs a first frequency band signal and a second frequency band signal, and the control unit controls the first filtering unit to select the first frequency band signal or the second frequency band signal to be sent to The first amplifying unit is output by the first output terminal.

A wireless communication device includes a communication module, a power amplification module, and a transceiver module, which are sequentially electrically connected. The power amplification module includes a first input end electrically connected to each other, a first filtering unit, and a first amplification. a unit and a first output end, a control unit connected to the first filtering unit and the first amplifying unit; the first input end is connected to the communication module, and configured to input a first frequency band signal and a second frequency band signal, the control The unit controls the first filtering unit to select the first frequency band signal or the second frequency band signal to be sent to the first amplifying unit, and is output from the first output end to the transceiver module.

The power amplification module of the present invention switches between the first filter and the second filter through the first switch and the second switch, and shares the first amplifying unit and the second amplifying unit, thereby simplifying the structure of the wireless communication device. ,reduce manufacturing cost.

Referring to FIG. 1 and FIG. 2, the wireless communication device 100 of the preferred embodiment of the present invention, such as a mobile phone, uses different frequency bands for communication. In the preferred embodiment, the communication is used for the GSM850/900 band and the GSM1800/1900 band. . The wireless communication device 100 includes a communication module 10, a power amplification module 30, and a transceiver module 50 that are electrically connected in sequence.

The communication module 10 is a GSM communication module, and is configured to send a GSM850/900 frequency band signal and a GSM1800/1900 frequency band signal to the power amplification module 30, and then amplified by the power amplification module 30, and then sent to the transceiver module 50 for transmission. . The transceiver module 50 is an antenna device.

The power amplification module 30 includes a first input terminal IN1, a second input terminal IN2, a control unit 31, a first filtering unit 32, a second filtering unit 33, a first amplifying unit 34, and a second amplifying unit. 35. The first output terminal OUT1 and the second output terminal OUT2.

The first input terminal IN1 and the second input terminal IN2 are connected to the communication module 10. The first input terminal IN1 is used for inputting the first frequency band signal and the second frequency band signal. In the preferred embodiment, the GSM850 is input. The /900 frequency band signal; the second input terminal IN2 is used for inputting the third frequency band signal and the fourth frequency band signal, and in the preferred embodiment, for inputting the GSM1800/1900 frequency band signal.

The control unit 31 includes a first frequency band selection pin SEL1, a second frequency band selection pin SEL2, and an enable pin EN electrically connected to the communication module 10. The first frequency band selection pin SEL1 and the second frequency band selection pin SEL2 are used to switch the operation modes of the first filtering unit 32 and the second filtering unit 33. The enable pin EN is used to control the power amplifying module 30. In the preferred embodiment, the enable pin EN is active high.

The first filtering unit 32 includes a first switch 321, a second switch 322, a first filter 323, and a second filter 324. The first switch 321 has one end connected to the first input terminal IN1 and the other end selectively connected to the first filter 323 and the second filter 324. The second switch 322 is selectively connected to the first filter 323 and the second filter 324 at one end, and is connected to the first amplifying unit 34 at the other end.

When the first switch 321 and the second switch 322 are both switched to be connected to the first filter 323, the first input terminal IN1 is connected to the first amplifying unit 34 via the first filter 323, and the GSM850 band signal passes through the first filter. 323 is sent to the first amplifying unit 34. When the first switch 321 and the second switch 322 are both switched to be connected to the second filter 324, the first input terminal IN1 is connected to the first amplifying unit 34 via the second filter 324, and the GSM900 band signal is passed through the second filter. 324 is sent to the first amplifying unit 34.

The second filtering unit 33 includes a third switch 331, a fourth switch 332, a third filter 333, and a fourth filter 334. The third switch 331 has one end connected to the second input terminal IN2 and the other end selectively connected to the third filter 333 and the fourth filter 334. The third switch 331 is selectively connected to the third filter 333 and the fourth filter 334 at one end, and is connected to the second amplifying unit 35 at the other end.

When the third switch 331 and the fourth switch 332 are both switched to be connected to the third filter 333, the second input terminal IN2 is connected to the second amplifying unit 35 via the third filter 333, and the GSM1800 band signal is passed through the third filter. 333 is sent to the second amplifying unit 35. When the third switch 331 and the fourth switch 332 are both switched to be connected to the fourth filter 334, the second input terminal IN2 is connected to the second amplifying unit 35 via the fourth filter 334, and the GSM1900 band signal is passed through the fourth filter. 334 is sent to the second amplifying unit 35.

The first switch 321, the second switch 322, the third switch 331, and the fourth switch 332 are in a state of the first band selection pin SEL1 and the second band selection pin SEL2.

The first amplifying unit 34 is configured to amplify the GSM850/900 band signal and output the signal to the first output terminal OUT1. The second amplifying unit 35 is configured to amplify the GSM1800/1900 frequency band signal and output the signal to the second output terminal OUT2.

The first output terminal OUT1 and the second output terminal OUT2 are connected to the transceiver module 50 for transmitting the GSM850/900 band signal and the GSM1800/1900 band signal through the transceiver module 50.

The power amplification module 30 of the present invention passes the first switch 321 and the second switch 322, the third switch 331 and the fourth switch 332 respectively between the first filter 323 and the second filter 324, and the third filter The switch 333 and the fourth filter 334 are switched to share the first amplifying unit 34 and the second amplifying unit 35, simplifying the structure of the wireless communication device 100 and reducing the production cost.

Referring to FIG. 1 and FIG. 2, the wireless communication device 100 of the preferred embodiment of the present invention, such as a mobile phone, uses different frequency bands for communication. In the preferred embodiment, the communication is used for the GSM850/900 band and the GSM1800/1900 band. . The wireless communication device 100 includes a communication module 10, a power amplification module 30, and a transceiver module 50 that are electrically connected in sequence.

The communication module 10 is a GSM communication module, and is configured to send a GSM850/900 frequency band signal and a GSM1800/1900 frequency band signal to the power amplification module 30, and then amplified by the power amplification module 30, and then sent to the transceiver module 50 for transmission. . The transceiver module 50 is an antenna device.

The power amplification module 30 includes a first input terminal IN1, a second input terminal IN2, a control unit 31, a first filtering unit 32, a second filtering unit 33, a first amplifying unit 34, and a second amplifying unit. 35. The first output terminal OUT1 and the second output terminal OUT2.

The first input terminal IN1 and the second input terminal IN2 are connected to the communication module 10. The first input terminal IN1 is used for inputting the first frequency band signal and the second frequency band signal. In the preferred embodiment, the GSM850 is input. The /900 frequency band signal; the second input terminal IN2 is used for inputting the third frequency band signal and the fourth frequency band signal. In the preferred embodiment, the signal is input to the GSM1800/1900 frequency band signal.

The control unit 31 includes a first frequency band selection pin SEL1, a second frequency band selection pin SEL2, and an enable pin EN electrically connected to the communication module 10. The first frequency band selection pin SEL1 and the second frequency band selection pin SEL2 are used to switch the operation modes of the first filtering unit 32 and the second filtering unit 33. The enable pin EN is used to control the power amplifying module 30. In the preferred embodiment, the enable pin EN is active high.

The first filtering unit 32 includes a first switch 321, a second switch 322, a first filter 323, and a second filter 324. The first switch 321 has one end connected to the first input terminal IN1 and the other end selectively connected to the first filter 323 and the second filter 324. The second switch 322 is selectively connected to the first filter 323 and the second filter 324 at one end, and is connected to the first amplifying unit 34 at the other end.

When the first switch 321 and the second switch 322 are both switched to be connected to the first filter 323, the first input terminal IN1 is connected to the first amplifying unit 34 via the first filter 323, and the GSM850 band signal passes through the first filter. 323 is sent to the first amplifying unit 34. When the first switch 321 and the second switch 322 are both switched to be connected to the second filter 324, the first input terminal IN1 is connected to the first amplifying unit 34 via the second filter 324, and the GSM900 band signal is passed through the second filter. 324 is sent to the first amplifying unit 34.

The second filtering unit 33 includes a third switch 331, a fourth switch 332, a third filter 333, and a fourth filter 334. The third switch 331 has one end connected to the second input terminal IN2 and the other end selectively connected to the third filter 333 and the fourth filter 334. The third switch 331 is selectively connected to the third filter 333 and the fourth filter 334 at one end, and is connected to the second amplifying unit 35 at the other end.

When the third switch 331 and the fourth switch 332 are both switched to be connected to the third filter 333, the second input terminal IN2 is connected to the second amplifying unit 35 via the third filter 333, and the GSM1800 band signal is passed through the third filter. 333 is sent to the second amplifying unit 35. When the third switch 331 and the fourth switch 332 are both switched to be connected to the fourth filter 334, the second input terminal IN2 is connected to the second amplifying unit 35 via the fourth filter 334, and the GSM1900 band signal is passed through the fourth filter. 334 is sent to the second amplifying unit 35.

The first switch 321, the second switch 322, the third switch 331, and the fourth switch 332 are in a state of the first band selection pin SEL1 and the second band selection pin SEL2.

The first amplifying unit 34 is configured to amplify the GSM850/900 band signal and output the signal to the first output terminal OUT1. The second amplifying unit 35 is configured to amplify the GSM1800/1900 frequency band signal and output the signal to the second output terminal OUT2.

The first output terminal OUT1 and the second output terminal OUT2 are connected to the transceiver module 50 for transmitting the GSM850/900 band signal and the GSM1800/1900 band signal through the transceiver module 50.

The power amplification module 30 of the present invention is provided between the first filter 323 and the second filter 324 by the first switch 321 and the second switch 322, the third switch 331 and the fourth switch 332, respectively. The filter 333 and the fourth filter 334 are switched to share the first amplifying unit 34 and the second amplifying unit 35, simplifying the structure of the wireless communication device 100 and reducing the production cost.

100. . . Wireless communication device

10. . . Communication module

30. . . Power amplifier module

IN1. . . First input

IN2. . . Second input

31. . . control unit

SEL1. . . First band select pin

SEL2. . . Second band select pin

EN. . . Enable pin

32. . . First filtering unit

321. . . First switch

322. . . Second switch

323. . . First filter

324. . . Second filter

33. . . Second filtering unit

331. . . Third switch

332. . . Fourth switch

333. . . Third filter

334. . . Fourth filter

34. . . First amplification unit

35. . . Second amplification unit

OUT1. . . First output

OUT2. . . Second output

50. . . Transceiver module

1 is a functional block diagram of a wireless communication device of the present invention.

2 is a partial circuit diagram of a power amplifying module of the present invention.

100. . . Wireless communication device

10. . . Communication module

30. . . Power amplifier module

50. . . Transceiver module

Claims (10)

A power amplification module includes a first input end electrically connected to each other, a first filtering unit, a first amplifying unit, and a first output end, and is connected to the first filtering unit and the first amplifying unit The first input end is configured to input the first frequency band signal and the second frequency band signal, and the control unit controls the first filtering unit to select the first frequency band signal or the second frequency band signal to be sent to the first amplifying unit, and is first Output output. The power amplification module of claim 1, wherein the first filtering unit comprises a first switch, a second switch, a first filter and a second filter; and the first switch has one end and a first input end Connected, the other end is selectively connected to the first filter and the second filter, the second switch is selectively connected to the first filter and the second filter, and the other end is connected to the first amplifying unit; The unit controls the first switch or the second switch to select the first filter or the second filter to be connected to the first amplifying unit to respectively transmit the first frequency band signal or the second frequency band signal. The power amplifying module of claim 1, wherein the power amplifying module comprises a second input end electrically connected, a second filtering unit, a second amplifying unit and a second output end; the control unit Electrically connected to the second filtering unit and the second amplifying unit; the second input end is configured to input a third frequency band signal and a fourth frequency band signal, and the control unit controls the second filtering unit to select the third frequency band signal or the fourth frequency band The signal is sent to the second amplifying unit and output by the second output. The power amplification module of claim 3, wherein the second filtering unit comprises a third switch, a fourth switch, a third filter, and a fourth filter; and the third switch has one end and a second input end Connected, the other end is selectively connected to the third filter and the fourth filter, the fourth switch is selectively connected to the third filter and the fourth filter, and the other end is connected to the second amplifying unit; The unit controls the third switch or the fourth switch to select the third filter or the fourth filter to be connected to the first amplifying unit to respectively transmit the third band signal or the fourth band signal. The power amplifier module of claim 4, wherein the first frequency band signal, the second frequency band signal, the third frequency band signal, and the fourth frequency band signal are GSM850/900 frequency band signals and GSM1800/1900 frequency band signals. A wireless communication device comprising a communication module, a power amplification module and a transceiver module, which are electrically connected in sequence, wherein the power amplification module comprises a first input end and a first filtering unit electrically connected in sequence a first amplifying unit and a first output end, a control unit connected to the first filtering unit and the first amplifying unit; the first input end is connected to the communication module, and configured to input the first frequency band signal and the second frequency band And the control unit controls the first filtering unit to select the first frequency band signal or the second frequency band signal to be sent to the first amplifying unit, and is output by the first output end to the transceiver module. The wireless communication device of claim 6, wherein the first filtering unit comprises a first switch, a second switch, a first filter and a second filter; one end of the first switch is connected to the first input end The other end is selectively connected to the first filter and the second filter, the second switch is selectively connected to the first filter and the second filter, and the other end is connected to the first amplifying unit; the control unit Controlling the first switch or the second switch to select the first filter or the second filter is coupled to the first amplifying unit to respectively transmit the first frequency band signal or the second frequency band signal. The wireless communication device of claim 6, wherein the power amplification module comprises a second input terminal, a second filtering unit, a second amplifying unit and a second output terminal, which are electrically connected in sequence; the control unit and the control unit The second filtering unit and the second amplifying unit are electrically connected; the second input end is configured to input the third frequency band signal and the fourth frequency band signal, and the control unit controls the second filtering unit to select the third frequency band signal or the fourth frequency band signal Send to the second amplifying unit and output by the second output. The wireless communication device of claim 8, wherein the second filtering unit comprises a third switch, a fourth switch, a third filter, and a fourth filter; the third switch is connected at one end to the second input end, The other end is selectively connected to the third filter and the fourth filter, the fourth switch is selectively connected to the third filter and the fourth filter, and the other end is connected to the second amplifying unit; the control unit controls The third switch or the fourth switch selects the third filter or the fourth filter to be connected to the first amplifying unit to respectively transmit the third band signal or the fourth band signal. The wireless communication device of claim 9, wherein the first frequency band signal, the second frequency band signal, the third frequency band signal, and the fourth frequency band signal are GSM850/900 frequency band signals and GSM1800/1900 frequency band signals.