Fully integrated chip for wireless signal transmission and application circuit thereof

Abstract

The utility model relates to a fully integrated chip for wireless signal emission and an application circuit thereof, which comprises a key conversion module, a logic control module, a coding module, an oscillator, an RF emission module and a frequency calibration circuit which are integrated on the chip, and the key conversion module and the logic control module form a signal transmission link. The key conversion module is used for transmitting key signals to the logic control module, the logic control module triggers the encoding module to generate corresponding key codes after receiving the key signals of the key conversion module, and the RF transmitting module is used for radiating data generated by the encoding module. The frequency calibration circuit ensures the accuracy of the carrier frequency transmitted by the chip through thirteen-bit current trimming and adjusting. According to the utility model, through the built-in high-precision oscillator circuit, the output of the high-precision oscillator circuit can be directly and externally connected with a matching circuit, the power is transmitted by an antenna, the circuit structure is effectively simplified, and through the specific IO multiplexing technology, the number of PAD is reduced, and the manufacturing cost of a chip is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wireless transmission technology, specifically to a fully integrated chip for wireless signal transmission and its application circuit. Background Technology

[0002] In traditional wireless transmission circuits, such as common remote control circuits, multiple discrete modules are typically required to implement various functions. For example, when a button detection module detects signals such as forward, backward, left / right turn, and acceleration, five ports are needed, each corresponding to a different function. After receiving the button signal, the logic control module generates the corresponding button code through the encoding module and outputs it from the SO port. This code then needs to be mixed with an external carrier transmission circuit before being amplified and transmitted through an antenna. This traditional circuit structure has many drawbacks, such as circuit complexity, large size, and high cost. Furthermore, due to the connection and collaborative operation of multiple modules, it is prone to signal interference and reduced reliability. Utility Model Content

[0003] This invention provides a fully integrated chip for wireless signal transmission to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A fully integrated chip for wireless signal transmission includes a key conversion module, a logic control module, an encoding module, an oscillator, an RF transmission module, and a frequency calibration circuit, all interconnected and integrated on the same chip. The key conversion module and the logic control module form a signal transmission link. The key conversion module transmits key signals to the logic control module. Upon receiving the key signals from the key conversion module, the logic control module triggers the encoding module to generate corresponding key codes. The RF transmission module radiates the data generated by the encoding module. The frequency calibration circuit ensures the accuracy of the chip's transmitted carrier frequency through a thirteen-bit current adjustment bit.

[0006] Preferably, the RF transmitting module includes a mixer and a power amplifier; the mixer is used to mix the carrier frequency generated by the oscillator with the data generated by the encoding module, and then amplify and radiate the data through the power amplifier.

[0007] Preferably, the chip has multiple pins on its exterior, and the multiple pins include a first I / O port, a second I / O port and a third I / O port, all of which are connected to the button conversion module 1.

[0008] Preferably, the chip is provided with an input / output I / O multiplexing circuit, which is connected to the first I / O port, the second I / O port and the third I / O port.

[0009] Preferably, the chip uses an SOP8 package to complete all button functions.

[0010] Preferably, multiple pins of the chip are connected to corresponding pins of the package, and multiple pins outside the chip are brought out through an SOP8 package.

[0011] Preferably, a bias circuit is also integrated, which includes two low-dropout linear regulators that supply power to the analog section and the digital section respectively.

[0012] Preferably, the frequency calibration circuit can adapt to three different code widths of 27M, 40M, or 49M through a thirteen-bit current trimming bit.

[0013] Another objective of this invention is to provide an application circuit for a fully integrated chip for wireless signal transmission. The application circuit includes a fully integrated wireless transmission chip. The key conversion module 1 is connected to the first I / O port, the second I / O port, and the third I / O port. The encoding module is connected to a light-emitting diode (LED). The output terminal of the RF transmission module is connected to a power amplifier output matching network composed of a first, second, third, and fourth capacitor and a first and second inductor. The power amplifier output matching network is connected to an antenna.

[0014] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0015] In this invention, a built-in high-precision oscillator circuit is used to replace the traditional carrier transmission circuit. Its output can be directly connected to an external matching circuit, and the power is transmitted by the antenna. This effectively simplifies the circuit structure, reduces the use of external components, reduces the complexity and cost of the circuit, and also reduces signal interference introduced by external circuits, thereby improving the stability and reliability of the entire wireless transmission system.

[0016] In this invention, a unique IO multiplexing technology enables the chip to achieve backward, forward, left turn, right turn, and acceleration functions using only 3 IO ports, which not only reduces the number of PADs but also lowers the chip's manufacturing cost.

[0017] In this invention, all button functions are achieved through a simple SOP8 package, which makes the application of the chip in miniaturized products more convenient and helps to promote the widespread application of wireless transmission technology in various miniaturized and portable devices. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the fully integrated wireless transmitter chip of this utility model.

[0019] Figure 2This is a schematic diagram of the application circuit of the fully integrated wireless transmitter chip of this utility model.

[0020] Figure 3 This is a circuit diagram of the button conversion module of this utility model.

[0021] In the diagram: 1. Key conversion module; 2. Logic control module; 3. Encoding module; 4. Oscillator; 5. RF transmission module; 6. Frequency calibration circuit. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification. Example 1

[0024] like Figures 1-3 As shown, this utility model provides a fully integrated chip for wireless signal transmission, including a key conversion module 1, a logic control module 2, an encoding module 3, an oscillator 4, an RF transmission module 5, and a frequency calibration circuit 6, which are interconnected and integrated on the same chip. The key conversion module 1 and the logic control module 2 form a signal transmission link. The key conversion module 1 is used to transmit key signals to the logic control module 2. After receiving the key signals from the key conversion module 1, the logic control module 2 triggers the encoding module 3 to generate corresponding key codes. The RF transmission module 5 is used to radiate the data generated by the encoding module 3. The frequency calibration circuit 6 ensures the accuracy of the chip's transmitted carrier frequency through a thirteen-bit current adjustment bit.

[0025] Furthermore, the RF transmitting module 5 includes a mixer and a power amplifier; the mixer is used to mix the carrier frequency generated by the oscillator 4 with the data generated by the encoding module 3, and then amplify and radiate the data through the power amplifier.

[0026] Furthermore, the chip has multiple external pins, including a first IO port BF, a second IO port LR, and a third IO port A. The first IO port BF, the second IO port LR, and the third IO port A are all connected to the button conversion module 1. The chip has an input / output IO multiplexing circuit, which is connected to the first IO port BF, the second IO port LR, and the third IO port A.

[0027] Specifically, through existing unique IO multiplexing technology, this solution allows the chip to achieve backward, forward, left turn, right turn, and acceleration functions using only 3 IO ports (BF, LR, A), compared to the traditional circuit which requires 5 IO ports (B, F, L, R, A). This innovative solution not only saves chip PAD resources and reduces chip manufacturing costs, but also makes the chip more flexible in PCB layout, reduces PCB wiring complexity, and helps to reduce product size and improve product integration.

[0028] Furthermore, the chip uses an SOP8 package to complete all button functions. Multiple pins of the chip are connected to the corresponding pins of the package, and multiple pins outside the chip are brought out through the SOP8 package.

[0029] Specifically, all button functions are implemented using a simple SOP8 package, which makes the application of the chip in miniaturized products more convenient, helps to promote the widespread application of wireless transmission technology in various miniaturized and portable devices, and further expands the application fields of the chip.

[0030] Furthermore, it also integrates a bias circuit, which includes two low-dropout linear regulators that supply power to the analog and digital sections respectively.

[0031] Furthermore, the frequency calibration circuit 6 can adapt to three different code widths: 27M, 40M, or 49M through a thirteen-bit current adjustment bit. Example 2

[0032] An application circuit for a fully integrated chip for wireless signal transmission includes a fully integrated chip for wireless signal transmission, a key conversion module 1 connected to a first IO port BF, a second IO port LR, and a third IO port A; an encoding module 3 connected to a light-emitting diode (LED); and an output matching network for a power amplifier composed of first, second, third, and fourth capacitors C1, C2, C3, and C4, and first and second inductors L1 and L2, connected to an antenna E1.

[0033] In practical applications, the circuit of this embodiment can be applied to remote control toys. Its working principle is as follows: after the logic control module 2 detects the button signal of the button conversion module 1, the encoding module 3 will generate the corresponding button code. Then, the carrier frequency generated by the oscillator 4 and the data generated by the encoding module 3 are mixed by the mixer, and then the signal is amplified and radiated by the power amplifier.

[0034] The remote-controlled toy uses the first IO port BF, the second IO port LR, and the third IO port A to realize the functions of moving backward, forward, turning left, turning right, and accelerating; the light-emitting diodes (LEDs) flash according to the corresponding codes of the buttons.

[0035] It is worth noting that the fully integrated wireless transmitter chip proposed in this solution can be directly soldered onto the PCB board. Only a simple matching circuit and antenna are needed to achieve a stable and reliable wireless transmission function. Compared with traditional circuits, this greatly simplifies circuit design and product assembly process, improves production efficiency, and reduces production costs.

[0036] In summary, the difference between this solution and traditional circuits lies in the fact that this solution uses a built-in high-precision oscillator circuit to replace the traditional carrier transmission circuit. Its output can be directly connected to an external matching circuit, and the power is transmitted by the antenna. Moreover, this design simplifies the circuit structure, reduces the use of external components, reduces the complexity and cost of the circuit, and also reduces signal interference introduced by external circuits, thereby improving the stability and reliability of the entire wireless transmission system.

[0037] Meanwhile, through unique IO multiplexing technology, this solution can achieve backward, forward, left turn, right turn and acceleration functions using only 3 IO ports BF, LR, and A, reducing the number of PADs and lowering manufacturing costs.

[0038] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fully integrated chip for wireless signal transmission, characterized by, The chip comprises a key conversion module (1), a logic control module (2), an encoding module (3), an oscillator (4), an RF transmitting module (5) and a frequency calibration circuit (6) which are connected to each other and integrated in the same chip, the key conversion module (1) and the logic control module (2) form a signal transmission link, the key conversion module (1) is used to transmit a key signal to the logic control module (2), the logic control module (2) triggers the encoding module (3) to generate a corresponding key code after receiving the key signal of the key conversion module (1), and the RF transmitting module (5) is used to radiate the data generated by the encoding module (3), and the frequency calibration circuit (6) ensures the accuracy of the carrier frequency transmitted by the chip through thirteen current trimming bits.

2. The fully integrated chip for wireless signal transmission of claim 1, wherein, The RF transmitting module (5) comprises a mixer and a power amplifier, the mixer is used to mix the carrier frequency generated by the oscillator (4) with the data generated by the encoding module (3), and then the mixed signal is amplified and radiated by the power amplifier.

3. The fully integrated chip for wireless signal transmission of claim 1, wherein, A plurality of pins are arranged outside the chip, and the plurality of pins comprise a first IO port (BF), a second IO port (LR) and a third IO port (A), the first IO port (BF), the second IO port (LR) and the third IO port (A) are connected to the key conversion module (1).

4. The fully integrated chip for wireless signal transmission of claim 3, wherein, The chip is provided with an input / output (IO) multiplexing circuit, and the IO multiplexing circuit is connected to the first IO port (BF), the second IO port (LR) and the third IO port (A).

5. The fully integrated chip for wireless signal transmission of claim 4, wherein, The chip adopts SOP8 packaging to complete all key functions.

6. The fully integrated chip for wireless signal transmission of claim 5, wherein, The plurality of pins of the chip are connected to the corresponding pins of the packaging, and the plurality of pins outside the chip are led out through the SOP8 packaging.

7. The fully integrated chip for wireless signal transmission of claim 1, wherein, A bias circuit is further integrated, and the bias circuit comprises two low-dropout linear voltage regulators which supply power to an analog part and a digital part respectively.

8. The fully integrated chip for wireless signal transmission of claim 1, wherein, The frequency calibration circuit (6) can adapt to three different code widths of 27M, 40M or 49M through thirteen current trimming bits.

9. An application circuit for a fully integrated chip for wireless signal transmission, characterized in that The application further relates to a full-integrated chip for wireless signal transmission.

10. The application circuit of the full-integrated chip for wireless signal transmission according to claim 9, characterized in that, The key conversion module (1) is connected to the first IO port (BF), the second IO port (LR) and the third IO port (A); The encoding module (3) is connected to a light-emitting diode (LED); The output end of the RF transmitting module (5) is connected to a power amplifier output matching network composed of a first capacitor (C1), a second capacitor (C2), a third capacitor (C3), a fourth capacitor (C4), a first inductor (L1) and a second inductor (L2), and the power amplifier output matching network is connected to an antenna (E1).

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