CN202978927U

CN202978927U - Integrated receiving device

Info

Publication number: CN202978927U
Application number: CN2012205700923U
Authority: CN
Inventors: 赵娜; 李香玲; 雷梦毕; 张国俊
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2012-10-26
Filing date: 2012-11-01
Publication date: 2013-06-05
Anticipated expiration: 2022-11-01

Abstract

The utility model discloses an integrated receiving device. The integrated receiving device comprises a radio frequency signal selection module for selecting an RF (radio frequency) signal; a gain control module for adjusting signal gain of the selected RF signal and transmitting the adjusted RF signal to a frequency conversion module; a local oscillator signal selection module for selecting a local oscillator signal; the frequency conversion module for selecting a frequency conversion way based on the adjusted RF signal and the selected local oscillator signal, and performing frequency conversion processing on the signals; and an intermediate frequency processing module for amplifying, filtering and outputting the signal after the frequency conversion processing. By adoption of the integrated receiving device, monolithic integration of the module is realized, power consumption is greatly reduced, and the device is suitable for various applications.

Description

A kind of integrated receiving system

Technical field

The utility model relates to a kind of receiving system, is specifically related to a kind of integrated receiving system.

Background technology

Along with the development of mechanics of communication, network communication quality and the network coverage have become the leading indicator of each large operator competition, and therefore, for communication base station, energy consumption, volume and unfailing performance also become the key factor of market competition.

In mobile communication system, radio frequency remoto module (Radio Remote Unit, RRU) is divided into near-end machine and remote termination with the base station, and namely radio base band is controlled and remote radio two parts.Along with RRU miniaturization and demand cheaply, make the integrated degree of the designing requirement of base station transceiver more and more higher; Simultaneously bandwidth is higher in order to adapt to, the mixing of multiple types is used, and also requires more and more lower to the power consumption of base station transceiver.Integration module as herein described is considered the integrated difficulty that different making materials and corresponding process variations bring, and is by advanced packaging, that different materials is integrated on same substrate, reaches the purpose of optimal design.

The utility model content

In view of this, main purpose of the present utility model is to provide a kind of integrated receiving system, can realize that the monolithic of module is integrated, and greatly reduce power consumption.

For achieving the above object, the technical solution of the utility model is achieved in that

The utility model provides a kind of integrated receiving system, and this device comprises:

Select the radiofrequency signal of radiofrequency signal to select module;

Radiofrequency signal after also adjusting the radiofrequency signal adjustment signal gain of selecting sends to the gain control module of frequency-variable module;

Select the local oscillation signal of local oscillation signal to select module;

Select conversion system according to the local oscillation signal of the radiofrequency signal after adjusting and selection, and signal is carried out the frequency-variable module of frequency-conversion processing;

The intermediate frequency process module that signal after frequency-conversion processing is amplified, exports after filtering.

In such scheme, described radiofrequency signal selects module, gain control module, local oscillation signal to select module, frequency-variable module and intermediate frequency process module, is packaged in a chip by multi-chip module encapsulation technology or system in package technology.

In such scheme, described conversion system is mixed-mode or demodulation modes.

In such scheme, described gain control module is completed by voltage-controlled attenuator or numerical-control attenuator the adjustment of signal gain.

In such scheme, the signal after described intermediate frequency process resume module adopts difference output or Single-end output form.

The integrated receiving system that the utility model provides comprises radiofrequency signal selection module, gain control module, local oscillation signal selection module, frequency-variable module and intermediate frequency process module; This Array selection radiofrequency signal sends to frequency-variable module after the signal gain adjustment, and selects local oscillation signal also to send to frequency-variable module; Select conversion system by frequency-variable module according to the local oscillation signal of the radiofrequency signal after adjusting and selection, and signal is carried out frequency-conversion processing; Amplify again, export after filtering through the signal after frequency-conversion processing.As seen, the utility model selects module and local oscillation signal to select module by radiofrequency signal, can realize as required multiple radiofrequency signal and local oscillation signal are selected, and adapts to multiple application; And the technical solution of the utility model in a chip, has realized that the monolithic of module is integrated with a plurality of module package; In addition, the utility model can satisfy different scenes to the demand of transceiver performance by selecting different power supplies, effectively reduces power consumption.

Description of drawings

Fig. 1 is the structure composed schematic diagram of the integrated receiving system of the utility model;

The application schematic diagram that Fig. 2 provides for the utility model the first embodiment;

The application schematic diagram that Fig. 3 provides for the utility model the second embodiment;

The application schematic diagram that Fig. 4 provides for the utility model the 3rd embodiment.

Embodiment

Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail again.

Fig. 1 is the structure composed schematic diagram of the integrated receiving system of the utility model, as shown in Figure 1, integrated receiving system of the present utility model comprises: radiofrequency signal selects module 11, gain control module 12, local oscillation signal to select module 13, frequency-variable module 14 and intermediate frequency process module 15; Wherein,

Described radiofrequency signal is selected module 11, is used for selecting radiofrequency signal, and the radiofrequency signal of selecting is sent to gain control module 12;

Here, described radiofrequency signal selects module 11 to select by the radiofrequency signal RF_IN that switch is controlled input;

Described gain control module 12 is used for the radiofrequency signal of receiving is adjusted signal gain, and the radiofrequency signal after adjusting is sent to frequency-variable module 14;

Here, the adjustment to signal gain in described gain control module 12 can be completed by voltage-controlled attenuator or numerical-control attenuator, and the adjusting range of signal gain and precision can be adjusted to suitable scope according to demand; The interface shape of gain control module 12 can be selected parallel control or Serial Control mode as required;

Described local oscillation signal is selected module 13, is used for selecting local oscillation signal, and local oscillation signal is sent to frequency-variable module 14;

Here, described local oscillation signal now module 13 can by switch control to the input local oscillation signal LO_IN select;

Described frequency-variable module 14 is used for selecting conversion system according to the local oscillation signal of the radiofrequency signal after adjusting and selection, and signal is carried out frequency-conversion processing;

Here, described frequency-variable module 14 can adopt mixed-mode or demodulation modes to carry out frequency-conversion processing to signal, wherein adopts demodulation modes can reduce requirement to the sampling clock of analog-digital converter (Analog to Digital Converter, ADC);

Described intermediate frequency process module 15 is used for the signal after frequency-conversion processing is amplified, exports after filtering;

Here, the signal after 15 pairs of frequency-conversion processing of described intermediate frequency process module carries out filtering to be processed, and is mainly that the mirror image of the communications band band outside supported for mixed mould base station disturbs, half intermediate frequency disturbs, aliasing disturbs and the interference type such as transmitting-receiving interference suppresses; The signal IF_OUT of described intermediate frequency process module 15 outputs adopts the form of difference output or Single-end output; Wherein, the frequency range of intermediate frequency and bandwidth satisfy the application requirements of zero intermediate frequency or multiple intermediate frequency reception as required.

The integrated receiving system that the utility model provides, can adopt multi-chip module encapsulation (Mult Chip Module, MCM) technology or system in package (System In a Package, SIP) technology with a plurality of module package in a chip, that is: radiofrequency signal is selected module, gain control module, local oscillation signal select module, frequency-variable module and intermediate frequency process module to be packaged in a chip by MCM technology or sip technique, so, realized that the monolithic of module is integrated; In addition, the integrated receiving system that the utility model provides can satisfy the reducing power consumption work requirements of system by selecting different power supplies, for example: can select the Power supply of 5V during high performance operation, can select the Power supply of 3.3V when performance requirement reduces, to reach the purpose of reducing power consumption; And, can pass through Serial Peripheral Interface (SPI) (Serial Peripheral Interface, SPI) configuration or other modes and realize that the selection of different voltages deals with the low-power consumption demand of present RRU.

The application schematic diagram that Fig. 2 provides for the utility model the first embodiment, in the present embodiment, integrated receiving system 22 of the present utility model can be used as digital pre-distortion (Digital Pre-Distortion, DPD) the hardware support circuit of processing is completed the distortion acquisition process to the power amplifier output signal.As shown in Figure 2, signal sends to power amplifier (Power Amplifier from board for receiving and sending message 24, PA) 21, after signal is amplified, enter integrated receiving system 22 of the present utility model through coupling circuit, send into DPD processing module 23 after completing gain adjustment, frequency conversion and the intermediate frequency process to signal, complete the distortion acquisition process to signal, send to board for receiving and sending message 24 that signal is exported the signal after processing;

Here, the linearity of the intermediate frequency process module of integrated receiving system 22 of the present utility model requires to satisfy the linear requirement of DPD.

The application schematic diagram that Fig. 3 provides for the utility model the second embodiment, in the present embodiment, integrated receiving system 32 of the present utility model can be used as the calibration path, completes the spuious calibration to transmitting chain.As shown in Figure 3, signal enters integrated receiving system 32 from modulator 31 outputs through coupling circuit, through feeding back to digital analog converter (Digital to Analog Converter after gain adjustment, frequency-conversion processing, DAC) 33, the spuious calibration of completing signal suppresses.

The application schematic diagram that Fig. 4 provides for the utility model the 3rd embodiment, in the present embodiment, integrated receiving system 44 of the present utility model can be used as standing wave detection hardware support circuit, and the standing wave of completing the output that transmits detects.As shown in Figure 4, signal sends by board for receiving and sending message 41, after PA 42 amplifies signal, again through duplexer 43 outputs, by coupling circuit, forward signal and reverse signal are sent to respectively the two ends of single-pole double-throw switch (SPDT), select forward signal or reverse signal are sent to integrated receiving system 44 by single-pole double-throw switch (SPDT), feed back to standing wave detection chip 45 after the gain adjustment of the integrated receiving system 44 of process, frequency-conversion processing, complete the standing wave measuring ability to signal.

The above is only preferred embodiment of the present utility model, is not be used to limiting protection range of the present utility model.All any modifications of doing within spirit and scope of the present utility model, be equal to and replace and improvement etc., within all being included in protection range of the present utility model.

Claims

1. an integrated receiving system, is characterized in that, this device comprises:

Select the radiofrequency signal of radiofrequency signal to select module;

2. device according to claim 1, it is characterized in that, described radiofrequency signal selects module, gain control module, local oscillation signal to select module, frequency-variable module and intermediate frequency process module, is packaged in a chip by multi-chip module encapsulation technology or system in package technology.

3. device according to claim 1, is characterized in that, described conversion system is mixed-mode or demodulation modes.

4. device according to claim 1, is characterized in that, described gain control module is completed by voltage-controlled attenuator or numerical-control attenuator the adjustment of signal gain.

5. device according to claim 1, is characterized in that, the signal after described intermediate frequency process resume module adopts difference output or Single-end output form.