CN217335593U

CN217335593U - Hand-held radio frequency signal generating and analyzing device

Info

Publication number: CN217335593U
Application number: CN202220724154.5U
Authority: CN
Inventors: 杨洋; 刘玲
Original assignee: Yanxing Technology Shanghai Co ltd
Current assignee: Yanxing Technology Shanghai Co ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-08-30
Anticipated expiration: 2032-03-31

Abstract

The utility model discloses a hand-held type radiofrequency signal produces and analytical equipment, including data acquisition and processing unit, data acquisition and processing unit electricity are connected with touch display screen, signal generation unit and power detecting element, the signal generation unit still is connected to the radiofrequency signal output part, the power detecting element still be connected to the radiofrequency signal input with the signal generation unit. The utility model discloses a data transmission that power detection unit will measure and obtain carries out scalar analysis and through the parameter of operation direct display radio frequency power, the return loss of radio frequency device and transmission characteristic on touch display screen to data collection and processing unit, not only can solve the index test demand in most radio frequency field, but also greatly reduced manufacturing cost.

Description

Hand-held radio frequency signal generating and analyzing device

Technical Field

The utility model relates to a radio frequency microwave device field especially relates to a hand-held type radio frequency signal produces and analytical equipment.

Background

In modern wireless communication, radio frequency signals can be used for wirelessly transmitting analog signals and digital signals, and various indexes of the radio frequency signals need to be tested when devices of equipment such as a base station, a communication radio station, a communication transmitter and the like detect and troubleshoot faults.

At present, a handheld vector network analyzer is commonly used, the manufacturing cost is high, in addition, the function of radio frequency power measurement is lacked, and certain defects exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hand-held type radio frequency signal produces and analytical equipment, reduces low in manufacturing cost, realizes integrating the design.

In order to solve the technical problem, the utility model provides a hand-held type radiofrequency signal produces and analytical equipment, including data acquisition and processing unit, data acquisition and processing unit electricity are connected with touch display screen, signal generation unit and power detecting unit, the signal generation unit still is connected to the radiofrequency signal output, power detecting unit still be connected to the radiofrequency signal input with the signal generation unit.

Furthermore, the signal generating unit comprises a phase-locked frequency generator, a numerical control attenuation and amplifier and a pulse modulator which are electrically connected in sequence.

Further, the power detection unit includes a first power detection unit and a second power detection unit.

Furthermore, one end of the first power detection unit is connected to the radio frequency signal output end through a directional coupling unit, and the other end of the first power detection unit is connected to the data acquisition and processing unit.

Furthermore, one end of the second power detection unit is connected with the radio frequency signal input end, and the other end of the second power detection unit is connected with the data acquisition and processing unit.

Further, the directional coupling unit includes a dual directional coupler, a reverse coupling end of the dual directional coupler is connected to one end of the first power detection unit, and an input end of the dual directional coupler is connected to an output end of the signal generation unit.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

the device of the utility model is compact in structure, light in weight (≦ 1.8kg), low cost, the integrated level is high, and the measuring accuracy is high, is applicable to the occasion that has portable test demand.

The utility model discloses a data transmission that power detection unit will measure and obtain carries out scalar analysis and through the parameter of operation direct display radio frequency power, the return loss of radio frequency device and transmission characteristic on touch display screen to data collection and processing unit, can solve the index test demand in most radio frequency field.

Drawings

Fig. 1 is a block diagram of a handheld radio frequency signal generating and analyzing device according to an embodiment of the present invention.

Detailed Description

The hand-held radio frequency signal generating and analyzing device of the present invention will now be described in greater detail with reference to the drawings, in which preferred embodiments of the present invention are shown, it being understood that those skilled in the art may modify the invention herein described while still achieving the advantageous effects of the present invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.

The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

As shown in fig. 1, the embodiment of the utility model provides a hand-held type radiofrequency signal produces and analytical equipment, including data acquisition and processing unit, data acquisition and processing unit electricity is connected with touch display screen, signal generation unit and power detecting element, signal generation unit still is connected to the radiofrequency signal output, power detecting element still be connected to the radiofrequency signal input with signal generation unit.

While the preferred embodiments of the handheld radio frequency signal generating and analyzing device are illustrated below for clarity of description, it should be understood that the present invention is not limited to the following embodiments, and other modifications made by conventional techniques of one skilled in the art are within the scope of the present invention.

In an embodiment of the present invention, the touch display screen is used for inputting the required radio frequency signal parameters and displaying the data obtained by analysis.

The embodiment of the utility model provides an in, data collection and processing unit for accept the instruction that the user assigned, and to signal production unit send instruction, generate the radio frequency signal that the user needs, and collect the data that power detection unit transmitted and carry out scalar analysis and carry out the arithmetic processing and generate the required data presentation of user on touch display screen.

In the embodiment of the present invention, the signal generating unit is configured to generate radio frequency signals with different frequencies, powers and pulse modulations required by users; the power detection unit is used for measuring the power value of the radio frequency signal.

In the embodiment, a user accesses a tested piece into a radio frequency signal output end, required parameters are input through a touch film display screen, a data acquisition and processing unit receives an instruction and then issues an instruction to a signal generation unit, the radio frequency signal output end can generate radio frequency signals required by the user, the radio frequency signals enter the tested piece, the measured data are transmitted to the data acquisition and processing unit through a power detection unit to be subjected to scalar analysis, the measured parameters of return loss and transmission characteristics of the tested piece are displayed on the touch display screen through operation, the user can also inject the measured signals into the device through the radio frequency signal input end, the measured radio frequency energy is converted into voltage signals through the power detection unit, and the voltage signals are transmitted to the data acquisition and processing unit to be operated to obtain accurate radio frequency power values.

Furthermore, the device is powered by a battery, and all units are integrally arranged in a handheld shell, so that the device has the characteristic of high portability.

The signal generating unit comprises a phase-locked frequency generator used for emitting signals with different frequency points, and the phase-locked frequency generator is electrically connected with a numerical control attenuation and amplifier used for changing the power of the emitted signals and a pulse modulator used for generating pulse signals.

In one implementation, a phase-locked frequency generator includes a reference source, a phase detector, a filter, a VCO, a frequency divider, a frequency multiplier; the phase of the VCO is locked to the phase of the reference source through the phase discriminator, the frequency precision of the output signal of the VCO is high finally due to low phase noise and high frequency precision of the reference source, and in addition, the whole phase-locked frequency generator can send out signals of any frequency point in 20-6000MHz through the frequency dividing and frequency multiplying circuit.

Because the power of the signal sent by the phase-locked frequency generator is a constant value, a user can reduce or increase the signal to a power value required by the user through the numerical control attenuation and amplifier. For example, we use a 90dB digitally controlled attenuator and a 20dB amplifier to make the dynamic range of signal output reach-90- +20 dBm.

Considering that the signal sent by the phase-locked frequency generator is a continuous wave signal, when a user (such as a radar user) needs a pulse signal, the T \ R radio frequency switch of the pulse modulator is used for regularly controlling the on-off of the signal, and the needed pulse signal is output. The minimum pulse width of the pulse modulation signal can reach 100ns, and the duty ratio is 1% -100%.

In an embodiment of the present invention, the power detecting unit includes a first power detecting unit and a second power detecting unit.

Specifically, one end of the first power detection unit is connected to the radio frequency signal output end through a directional coupling unit, and the other end of the first power detection unit is connected to the data acquisition and processing unit.

Specifically, one end of the second power detection unit is connected with the radio frequency signal input end, and the other end of the second power detection unit is connected with the data acquisition and processing unit. For example, the second power detection unit is composed of a detector and an MCU, the detector converts an incoming rf power signal into a voltage value, and then the voltage value enters the MCU, and an accurate incident power value is obtained through calibration calculation, and the detection dynamic range is: -55dBm to +20 dBm.

The directional coupling unit comprises a double directional coupler, the reverse coupling end of the double directional coupler is connected to one end of the first power detection unit, and the input end of the double directional coupler is connected to the output end of the signal generation unit. The reverse coupling end of the dual directional coupler is connected with the first power detection unit, so that the reflected power can be measured, and S11 of the measured piece, namely the return loss of the radio frequency device, is measured, and the value of the return loss is the ratio of the reflected power to the incident power.

The utility model discloses also can realize the test of S21. Specifically, S21 is an rf network transmission parameter, which is a very important rf parameter, and its value is the ratio of the rf network output power to the input power. The utility model discloses in, can insert the input/output end of being surveyed the piece respectively the output and the input of this device, then set for signal output power, the radio frequency signal output end that the signal got into from this device after the beginning test is surveyed the piece, then from being surveyed a radio frequency signal input that the piece output got into this device again, second power detection unit reachs the power value of input through the measurement to input radio frequency signal, this power value can reachs after setting for power ratio and being surveyed a S21 parameter. The device has a direct connection calibration function, so that the S21 precision of the test can reach +/-0.3 dB.

To sum up, the utility model discloses a power detection unit will measure the data transmission that obtains and carry out scalar analysis and through operation direct display radio frequency power, radio frequency device's return loss and transmission characteristic's on touch display screen parameter to data collection and processing unit, not only can solve the index test demand in most radio frequency field, but also greatly reduced manufacturing cost.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The hand-held radio frequency signal generating and analyzing device is characterized by comprising a data acquiring and processing unit, wherein the data acquiring and processing unit is electrically connected with a touch display screen, a signal generating unit and a power detecting unit, the signal generating unit is further connected to a radio frequency signal output end, and the power detecting unit is further connected to a radio frequency signal input end and the signal generating unit.

2. The hand-held radio frequency signal generating and analyzing device as claimed in claim 1, wherein said signal generating unit comprises a phase-locked frequency generator, a digitally controlled attenuator and amplifier and a pulse modulator electrically connected in sequence.

3. The hand-held radio frequency signal generating and analyzing device as claimed in claim 1, wherein the power detecting unit comprises a first power detecting unit and a second power detecting unit.

4. The hand-held radio frequency signal generation and analysis device of claim 3, wherein one end of the first power detection unit is connected to the radio frequency signal output end through a directional coupling unit, and the other end is connected to the data acquisition and processing unit.

5. The hand-held radio frequency signal generating and analyzing device as claimed in claim 3, wherein one end of the second power detecting unit is connected to the radio frequency signal input terminal, and the other end is connected to the data collecting and processing unit.

6. The hand-held radio frequency signal generating and analyzing device as claimed in claim 4, wherein the directional coupling unit comprises a bi-directional coupler, a reverse coupling end of the bi-directional coupler is connected to one end of the first power detecting unit, and an input end is connected to the output end of the signal generating unit.