CN209072464U - A kind of CW signal receiver applied to 650MHz~5.0GHz frequency range - Google Patents

Abstract

The utility model discloses a kind of CW signal receivers applied to 650MHz~5.0GHz frequency range, it further include turning serial port module with the USB of single-chip microcontroller interconnection including power module, antenna, the first amplifying circuit, the first one-to-two switch, high-pass filtering, low-pass filtering, the second one-to-two switch, the first mixting circuit, the first filter circuit, the second amplifying circuit, attenuator circuit, the second mixting circuit, third amplifying circuit, the second filter circuit, the 4th amplifying circuit, logarithm process circuit, single-chip microcontroller.The reception frequency range of the utility model is in the range of 650MHz~5.0GHz frequency range, so that received frequency range is extended to existing mobile communication full frequency bands, and mobile communication signal is received to stablize, and it is small in size, be convenient for carrying and cheap, be well adapted for the development of mobile communication technology.

Description

A kind of CW signal receiver applied to 650MHz~5.0GHz frequency range

Technical field

It is especially a kind of applied to 650MHz~5.0GHz frequency range the utility model relates to mobile communication receiver field CW signal receiver.

Background technique

Currently, at home in signal receiver terminal market, the received frequency range of receiver terminal is often less at one In range, different yards is needed using the different receiver terminals for receiving frequency range, and as mobile communication technology will The 5G epoch are marched toward, it is even more impossible to adapt to the development of mobile communication for domestic existing receiver terminal.Although foreign countries have band limits wide CW signal receiver, but it is expensive, can not promote at home.

Utility model content

The purpose of this utility model is to provide a kind of CW signal receiver applied to 650MHz~5.0GHz frequency range, with Solve the problems mentioned above in the background art.

To achieve the above object, the utility model provides the following technical solutions:

A kind of CW signal receiver applied to 650MHz~5.0GHz frequency range, including antenna, the first amplifying circuit, first One-to-two switch, high-pass filtering, low-pass filtering, the second one-to-two switch, the first mixting circuit, the first filter circuit, second are put Big circuit, attenuator circuit, the second mixting circuit, third amplifying circuit, the second filter circuit, the 4th amplifying circuit, single-chip microcontroller, the One local oscillation circuit, reference frequency circuit, the second local oscillation circuit；The antenna, the first amplifying circuit, the first one-to-two switch one Terminal is sequentially connected, and two terminals of the first one-to-two switch are connected with high-pass filtering, low-pass filtering respectively, the high pass filter Wave, low-pass filtering parallel connection are connected, and are connected respectively with two terminals of second one-to-two switch, the second one-to-two switch A terminal put with the first mixting circuit, the first filter circuit, the second amplifying circuit, attenuator circuit, the second mixting circuit, third Big circuit, the second filter circuit, the 4th amplifying circuit, logarithm process circuit and single-chip microcontroller are sequentially connected；The reference frequency electricity Road module is sequentially connected with the first local oscillation circuit, the first mixting circuit；The reference frequency circuit module and the second local oscillation circuit, Second mixting circuit is sequentially connected；The power module is connected with single-chip microcontroller, the single-chip microcontroller and the first one-to-two switch, second One-to-two switch, the first local oscillation circuit, the second local oscillation circuit are respectively connected with, and control its working condition.

Preferably, should applied to 650MHz~5.0GHz frequency range CW signal receiver receive frequency range be 650MHz~ 5.0GHz, received frequency range cover mobile communication full frequency bands.

It preferably, should further include being interconnected with single-chip microcontroller applied to the CW signal receiver of 650MHz~5.0GHz frequency range USB turns serial port module.

Preferably, battery power supply mould should be used applied to the CW signal receiver power module of 650MHz~5.0GHz frequency range Formula, power supply rated current are 500MA.

Compared with prior art, the utility model has the beneficial effects that

The reception frequency range of the utility model is in the range of 650MHz~5.0GHz frequency range, so that received frequency range is extended to Existing mobile communication full frequency bands, and receive mobile communication signal and stablize, and it is small in size, be convenient for carrying and cheap, It has been well adapted for the development of mobile communication technology.

Detailed description of the invention

Fig. 1 is the structural block diagram of the utility model；

Fig. 2 is the working principle diagram of single-chip microcontroller described in the utility model；

Fig. 3 is the circuit diagram of the first local oscillation circuit described in the utility model.

Fig. 4 is the circuit diagram of the second local oscillation circuit described in the utility model.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The utility model provides a kind of technical solution referring to FIG. 1 to FIG. 4: the utility model provides a kind of technical solution: A kind of CW signal receiver applied to 650MHz~5.0GHz frequency range includes that antenna, the first amplifying circuit, the first one-to-two are opened Pass, low-pass filtering, the second one-to-two switch, the first mixting circuit, the first filter circuit, the second amplifying circuit, is declined at high-pass filtering Powered down road, the second mixting circuit, third amplifying circuit, the second filter circuit, the 4th amplifying circuit, single-chip microcontroller, the first local oscillator electricity Road, reference frequency circuit, the second local oscillation circuit；The terminal that the antenna, the first amplifying circuit, the first one-to-two switch is successively It is connected, two terminals of the first one-to-two switch are connected with high-pass filtering, low-pass filtering respectively, the high-pass filtering, low pass Filtering is in parallel to be connected, and is connected respectively with two terminals of second one-to-two switch, and the second one-to-two switch is all the way End and the first mixting circuit, the first filter circuit, the second amplifying circuit, attenuator circuit, the second mixting circuit, third amplification electricity Road, the second filter circuit, the 4th amplifying circuit, logarithm process circuit and single-chip microcontroller are sequentially connected；The reference frequency circuit mould Block is sequentially connected with the first local oscillation circuit, the first mixting circuit；The reference frequency circuit module and the second local oscillation circuit, second Mixting circuit is sequentially connected；The power module is connected with single-chip microcontroller, the single-chip microcontroller and the first one-to-two switch, the 2nd 1 point Two switches, the first local oscillation circuit, the second local oscillation circuit are respectively connected with, and control its working condition.Single-chip microcontroller further includes Interconnected USB turns serial port module.Single-chip microcontroller model STC15F2K60S2-SOP28/SKDIP28 used in the examples, It is straight for realizing the control to the first, second local oscillation circuit, the first, second one-to-two switch, the conversion of USB serial data, DAC Galvanic electricity pressure turns digital signal and to functions such as the controls of attenuator circuit working condition.

The working principle of the utility model embodiment are as follows:

After antenna receives mobile communication signal, after the first amplifying circuit carries out signal amplification, by the first one-to-two Signal is divided into two parts by switch, the first one-to-two switch, when signal is greater than 2700MHz, makes signal by high-pass filtering, instead By low-pass filtering, two paths of signals switchs out through the second one-to-two switch synthesis signal all the way from the second one-to-two later Signal with from the standard frequency provided based on reference frequency circuit the first local oscillation circuit generate sine wave signal entrance First mixting circuit carries out Frequency mixing processing, and the signal after mixing is filtered by the first filter circuit, the amplification of the second amplifying circuit, then After carrying out attenuation processing to interference signal by attenuator circuit, with the from the standard frequency provided based on reference frequency circuit The signal for the fixed frequency that two local oscillation circuits generate enters the second mixting circuit and carries out Frequency mixing processing, handles through the second mixting circuit Signal afterwards amplifies by third amplifying circuit, and the filtering of the second filter circuit, filtered signal is again through the 4th amplifying circuit Amplification, most feeds back to single-chip microcontroller after logarithm process afterwards.In this process, single-chip microcontroller mainly passes through described two one points of control Entire frequency range, is first divided into two sections, then altogether, to realize the reception to wide band signals by processing of two switches to signal.It is single Piece machine also passes through USB and turns serial port module to carry out data transmission with single-chip microcontroller.In the present embodiment, USB turns the master chip of serial port module Using CH340T, the TXD interface of single-chip microcontroller is connected through resistance R402 with the RXD interface of CH340T chip, the RXD interface of single-chip microcontroller It is connected by diode D401 with the TXD interface of CH340T chip, the RXD interface phase of the anode and single-chip microcontroller of diode D401 Even, the cathode of diode D401 is connected with the TXD of CH340T chip, as shown in Fig. 2, the conversion to realize interface, completes number According to transmission.

It is continuous that the present embodiment can receive the CW that frequency range is 650MHz~5.0GHz, power bracket is -25~-115dBm Wave, the error for receiving power is ± 2dB, and power module uses battery powered mode, and the rated current of power supply is 500MA, tool There are reception frequency and power bracket wide, and cover current mobile communication full frequency bands, reception power error is low, and power supply is simple, takes Band is convenient.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (4)

1. a kind of CW signal receiver applied to 650MHz~5.0GHz frequency range, it is characterised in that: including antenna, the first amplification Circuit, the first one-to-two switch, high-pass filtering, low-pass filtering, the second one-to-two switch, the first mixting circuit, the first filtered electrical Road, the second amplifying circuit, attenuator circuit, the second mixting circuit, third amplifying circuit, the second filter circuit, the 4th amplifying circuit, Single-chip microcontroller, the first local oscillation circuit, reference frequency circuit, the second local oscillation circuit and power module；The antenna, the first amplification electricity Road, the first one-to-two switch a terminal be sequentially connected, two terminals of first one-to-two switch respectively with high-pass filtering, low Pass filter is connected, and the high-pass filtering, low-pass filtering parallel connection are connected, and the two terminal phases with second one-to-two switch respectively Even, a terminal of the second one-to-two switch and the first mixting circuit, the first filter circuit, the second amplifying circuit, decaying electricity Road, the second mixting circuit, third amplifying circuit, the second filter circuit, the 4th amplifying circuit, logarithm process circuit and single-chip microcontroller according to It is secondary to be connected；The reference frequency circuit module is sequentially connected with the first local oscillation circuit, the first mixting circuit；The reference frequency electricity Road module is sequentially connected with the second local oscillation circuit, the second mixting circuit；The power module is connected with single-chip microcontroller, the single-chip microcontroller It is respectively connected with the first one-to-two switch, the second one-to-two switch, the first local oscillation circuit, the second local oscillation circuit, and to its work State is controlled.

2. CW signal receiver according to claim 1, it is characterised in that: reception frequency range be 650MHz~ 5.0GHz。

3. CW signal receiver according to claim 1, it is characterised in that: further include turning string with the USB of single-chip microcontroller interconnection Mouth mold block.

4. CW signal receiver according to claim 1, it is characterised in that: the power module is using battery power supply mould Formula, power supply rated current are 500MA.