Antenna device and signal receiving circuit

Abstract

The utility model discloses an antenna device, and relates to the antenna field, the antenna device comprises an FPC antenna, the FPC antenna is fixed on the topmost layer of a support structure through black foam rubber and is used for realizing Wi-Fi and BLE wireless communication, the support structure is provided with a bending joint, and the bending point of the FPC antenna in the support structure is displayed. The beneficial effects of the utility model are that through the design of the vertical stacked structure, the anti-seismic performance is enhanced, and the stability of wireless communication is ensured; meanwhile, all the components are tightly stacked together, so that the space is saved; and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the field of antennas, in particular to an antenna device and a signal receiving circuit. Background Art

[0002] The antenna mainly completes the energy conversion between high-frequency current (guided wave) and free-space wave. The transmitting antenna converts high-frequency current into free-space wave, while the receiving antenna converts free-space wave into high-frequency current.

[0003] The existing antenna devices have average earthquake resistance, resulting in insufficient communication stability, which needs to be improved. Utility Model Content

[0004] The purpose of the present utility model is to provide an antenna device and a signal receiving circuit to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An antenna device includes an FPC antenna, which is fixed to the top layer of a supporting structure by black foam glue and is used to realize wireless communications of Wi-Fi and BLE. The supporting structure is provided with a bending connection, which shows the bending point of the FPC antenna in the supporting structure.

[0007] A signal receiving circuit, comprising:

[0008] A signal receiving module is used to receive signals through the FPC antenna and output them to the amplification module;

[0009] An amplifier module is used to amplify the signal and output it to the isolation module;

[0010] An isolation module is used to isolate the amplified signal and then output it;

[0011] The signal receiving module is connected to the amplifying module, and the amplifying module is connected to the isolating module.

[0012] As a further solution of the utility model: the signal receiving module includes a bandpass filter U2 and a resistor R1, the input end of the bandpass filter U2 receives the signal through the FPC antenna, the output end of the bandpass filter U2 is connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the amplification module.

[0013] As a further solution of the utility model: the amplification module includes resistor R2, resistor R3, transistor V1, transistor V2, capacitor C1, capacitor C2, resistor R4, resistor R5, and resistor R6. The base of the transistor V1 is connected to one end of the resistor R2, one end of the resistor R3, and the signal receiving module. The other end of the resistor R2 is grounded. The other end of the resistor R3 is connected to one end of the capacitor C1, the base of the transistor V2, and one end of the resistor R5. The other end of the capacitor C1 is grounded. The collector of the transistor V1 is connected to the emitter of the transistor V2. The emitter of the transistor V1 is connected to one end of the capacitor C2 and one end of the resistor R4. The other end of the capacitor C2 is grounded. The other end of the resistor R4 is grounded. The other end of the resistor R5 is connected to one end of the resistor R6 and the isolation module. The collector of the transistor V2 is connected to the other end of the resistor R6 and the isolation module.

[0014] As a further solution of the utility model: the isolation module includes an inductor L1, an inductor L2, a capacitor C3, a capacitor C4, a capacitor C5, a potentiometer RP1, a resistor R7, and a voltage regulator U1. One end of the inductor L1 is connected to the amplification module, the other end of the inductor L1 is connected to one end of the capacitor C3, one end of the capacitor C4, and one end of the inductor L2, the other end of the capacitor C3 is connected to the amplification module, the other end of the capacitor C4 outputs a signal, the other end of the inductor L2 is connected to one end of the resistor R7 and the output end of the voltage regulator U1, the input end of the voltage regulator U1 is connected to the power supply voltage VCC, the ground end of the voltage regulator U1 is connected to one end of the capacitor C5, the other end of the resistor R7, and one end of the potentiometer RP1, and the other end of the potentiometer RP1 is grounded.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the utility model enhances the anti-vibration performance and ensures the stability of wireless communication through the vertical stacking structure design; at the same time, the components are stacked closely together to save space; and the structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of an antenna device.

[0017] Figure 2 The present invention is a circuit diagram of a signal receiving circuit.

[0018] In the picture: 1-FPC antenna, 2-black foam glue, 3-bend connection. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 An antenna device includes an FPC antenna 1, which is fixed to the top layer of a supporting structure by a black foam glue 2, and is used to realize wireless communication of Wi-Fi and BLE. The supporting structure is provided with a bending connection 3, which shows the bending point of the FPC antenna 1 in the supporting structure.

[0021] The supporting structure supports each component, wherein the FPC antenna 1 is arranged at the top layer of the supporting structure. Other auxiliary devices such as directional couplers are designed according to a vertical stacking structure, which enhances the seismic performance and ensures the stability of wireless communication. At the same time, the components are stacked tightly together to save space and have a simple structure.

[0022] In this example: See Figure 2 , a signal receiving circuit, comprising:

[0023] A signal receiving module is used to receive signals through the FPC antenna 1 and output them to the amplification module;

[0024] An amplifier module is used to amplify the signal and output it to the isolation module;

[0025] An isolation module is used to isolate the amplified signal and then output it;

[0026] The signal receiving module is connected to the amplifying module, and the amplifying module is connected to the isolating module.

[0027] In this example: See Figure 2 The signal receiving module includes a bandpass filter U2 and a resistor R1. The input end of the bandpass filter U2 receives the signal through the FPC antenna 1. The output end of the bandpass filter U2 is connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the amplification module.

[0028] The signal passes through filter U2 to filter out stray signals, and the filtered signal is output to the amplification module.

[0029] In this example: See Figure 2The amplification module includes a resistor R2, a resistor R3, a transistor V1, a transistor V2, a capacitor C1, a capacitor C2, a resistor R4, a resistor R5, and a resistor R6. The base of the transistor V1 is connected to one end of the resistor R2, one end of the resistor R3, and a signal receiving module. The other end of the resistor R2 is grounded. The other end of the resistor R3 is connected to one end of the capacitor C1, the base of the transistor V2, and one end of the resistor R5. The other end of the capacitor C1 is grounded. The collector of the transistor V1 is connected to the emitter of the transistor V2. The emitter of the transistor V1 is connected to one end of the capacitor C2 and one end of the resistor R4. The other end of the capacitor C2 is grounded. The other end of the resistor R4 is grounded. The other end of the resistor R5 is connected to one end of the resistor R6 and an isolation module. The collector of the transistor V2 is connected to the other end of the resistor R6 and an isolation module.

[0030] After the high level of the signal is input to the amplifier module, transistor V1 conducts to amplify the signal, driving transistor V2 to conduct, and transmits the amplified signal to the isolation module. After the low level of the signal is transmitted to the base of transistor V1, transistors V1 and V2 are not conducting. In this way, the amplified signal is fed back to the isolation module.

[0031] In this example: See Figure 2 The isolation module includes an inductor L1, an inductor L2, a capacitor C3, a capacitor C4, a capacitor C5, a potentiometer RP1, a resistor R7, and a voltage regulator U1. One end of the inductor L1 is connected to the amplification module, the other end of the inductor L1 is connected to one end of the capacitor C3, one end of the capacitor C4, and one end of the inductor L2, the other end of the capacitor C3 is connected to the amplification module, the other end of the capacitor C4 outputs a signal, the other end of the inductor L2 is connected to one end of the resistor R7 and the output end of the voltage regulator U1, the input end of the voltage regulator U1 is connected to the power supply voltage VCC, the ground end of the voltage regulator U1 is connected to one end of the capacitor C5, the other end of the resistor R7, and one end of the potentiometer RP1, and the other end of the potentiometer RP1 is grounded.

[0032] The high level of the output signal VOUT is determined by the voltage regulator U1. Therefore, the signal amplification gain of the amplifier module is determined by adjusting the resistance value of the potentiometer RP1. In addition, the frequency isolation circuit composed of inductor L1, inductor L2, capacitor C3, and capacitor C4 isolates the voltage source of transistors V1 and V2 (power supply conversion by voltage regulator U1) and the output signal VOUT (high level determined by voltage regulator U1) to avoid interference.

[0033] The working principle of the utility model is: the signal receiving module is used to receive the signal through the FPC antenna 1 and output it to the amplifying module; the amplifying module is used to amplify the signal and output it to the isolating module; the isolating module is used to isolate the amplified signal and then output it.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, the embodiments should be considered as exemplary and non-restrictive in all respects.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An antenna device, characterized in that: The antenna device includes an FPC antenna, which is fixed to the top layer of the supporting structure by black foam glue and is used to realize wireless communication of Wi-Fi and BLE. The supporting structure is provided with a bending connection, which shows the bending point of the FPC antenna in the supporting structure.

2. A signal receiving circuit, applied to the antenna device according to claim 1, characterized in that: The signal receiving circuit comprises: A signal receiving module is used to receive signals through the FPC antenna and output them to the amplification module; An amplifier module is used to amplify the signal and output it to the isolation module; An isolation module is used to isolate the amplified signal and then output it; The signal receiving module is connected to the amplifying module, and the amplifying module is connected to the isolating module.

3. The signal receiving circuit according to claim 2, characterized in that: The signal receiving module includes a bandpass filter U2 and a resistor R1. The input end of the bandpass filter U2 receives the signal through the FPC antenna. The output end of the bandpass filter U2 is connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the amplification module.

4. The signal receiving circuit according to claim 2, characterized in that: The amplification module includes a resistor R2, a resistor R3, a transistor V1, a transistor V2, a capacitor C1, a capacitor C2, a resistor R4, a resistor R5, and a resistor R6. The base of the transistor V1 is connected to one end of the resistor R2, one end of the resistor R3, and a signal receiving module. The other end of the resistor R2 is grounded. The other end of the resistor R3 is connected to one end of the capacitor C1, the base of the transistor V2, and one end of the resistor R5. The other end of the capacitor C1 is grounded. The collector of the transistor V1 is connected to the emitter of the transistor V2. The emitter of the transistor V1 is connected to one end of the capacitor C2 and one end of the resistor R4. The other end of the capacitor C2 is grounded. The other end of the resistor R4 is grounded. The other end of the resistor R5 is connected to one end of the resistor R6 and an isolation module. The collector of the transistor V2 is connected to the other end of the resistor R6 and an isolation module.

5. The signal receiving circuit according to claim 2, characterized in that: The isolation module includes an inductor L1, an inductor L2, a capacitor C3, a capacitor C4, a capacitor C5, a potentiometer RP1, a resistor R7, and a voltage regulator U1. One end of the inductor L1 is connected to the amplification module, the other end of the inductor L1 is connected to one end of the capacitor C3, one end of the capacitor C4, and one end of the inductor L2, the other end of the capacitor C3 is connected to the amplification module, the other end of the capacitor C4 outputs a signal, the other end of the inductor L2 is connected to one end of the resistor R7 and the output end of the voltage regulator U1, the input end of the voltage regulator U1 is connected to the power supply voltage VCC, the ground end of the voltage regulator U1 is connected to one end of the capacitor C5, the other end of the resistor R7, and one end of the potentiometer RP1, and the other end of the potentiometer RP1 is grounded.

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