Swallowing radio frequency and terahertz hybrid transceiver system chip for human stomach medical detection

Abstract

The invention relates to a swallowable radio frequency and terahertz hybrid transceiving system chip for human stomach medical detection. The swallowable radio frequency and terahertz hybrid transceiving system chip comprises a double-frequency WIFI module, a rectification power supply module, a transceiving selection module, a terahertz imaging module and a down-conversion module. Wherein the rectification power supply module, the transmit-receive selection module, the terahertz imaging module and the down-conversion module are integrated in a chip. When a gastroscope test is carried out, the chip and the double-frequency WIFI module are jointly loaded into a capsule with the diameter of 3mm and are orally taken by a user on an empty stomach to be swallowed. The chip is powered by an in-vitro low-frequency WIFI signal, a high-frequency WIFI signal provides required radio frequency input, a terahertz imaging module in the chip emits terahertz waves, scanning imaging is carried out in intestines and stomach, a scanning result is subjected to down-conversion through a down-conversion module to a high-frequency wifi frequency band, and the high-frequency wifi frequency band is emitted out of a body. And the in-vitro computer receives and performs 3D reconstruction to obtain stomach space information.

Description

Technical Field

[0001] This invention relates to the field of terahertz imaging, and more specifically to a swallowable radio frequency terahertz hybrid transceiver system chip for gastrointestinal medical detection. Background Technology

[0002] Gastric imaging has wide applications in medical diagnosis. Gastric imaging data can effectively assist doctors in diagnosing gastric diseases, assessing gastric function, and identifying lesions. Regular gastric imaging data can help doctors assess changes in a patient's stomach. Current gastric imaging technology relies on cameras for visual capture. Although the smallest gastroscopy capsule has been shrunk to 11.8mm*27mm, its clinical use can cause swallowing difficulties in some patients, and its high cost makes it unaffordable for ordinary patients.

[0003] Terahertz signals refer to electromagnetic wave signals with frequencies ranging from 0.1 to 10 THz. Because different materials have varying absorption, reflectivity, and transmittance of terahertz signals, when a terahertz signal is radiated towards an object under test, information about the object can be obtained through either the reflected or transmitted waves. Based on this information, scanning the object allows for terahertz imaging.

[0004] Terahertz signals have extremely short wavelengths, so terahertz chips can be made in millimeter-sized form factors, enabling the realization of terahertz phased arrays within a very small size, thus allowing the chips to be placed in capsules and swallowed.

[0005] Because terahertz signals are absorbed by water molecules, they do not easily penetrate the human body from the inside. This characteristic can be used to perform in-vivo imaging scans using terahertz signals. In contrast, radio frequency signals penetrate the human body more easily and can be used for information transmission inside and outside the body.

[0006] Traditional gastric imaging utilizes techniques such as X-ray imaging, magnetic resonance imaging (MRI), thermal imaging, and endoscopy. Among these techniques, X-ray imaging suffers from high levels of ionizing radiation. MRI exhibits significant noise during imaging and is unsuitable for patients with implanted metal parts. Thermal imaging requires the patient to be naked and lacks sufficient precision. Endoscopy can easily cause pain, nausea, and other discomfort for patients and is unsuitable for examining complex areas. Summary of the Invention

[0007] To address the problems existing in the background technology described above, this invention provides a swallowable radio frequency terahertz hybrid transceiver system chip for gastrointestinal medical detection. Compared with traditional solutions, this invention has advantages such as low ionizing radiation, no noise, wide applicability, high-precision scanning capability, and comfortable user experience.

[0008] To achieve the above objectives, this invention provides a swallowable radio frequency terahertz hybrid transceiver system chip for gastrointestinal medical testing, comprising a dual-band WIFI module, a rectifier power supply module, a transceiver selection module, a terahertz imaging module, and a down-conversion module. The rectifier power supply module, transceiver selection module, terahertz imaging module, and down-conversion module are integrated within the chip. The chip and the dual-band WIFI module are housed in a 3mm diameter capsule for patients to ingest on an empty stomach.

[0009] The dual-band WIFI module is made of a flexible antenna, with the high-frequency band used for transmitting and receiving communications, and the low-frequency band used to continuously power the chip.

[0010] The low-frequency input of the dual-band Wi-Fi module is connected to the input of the rectifier power supply module. The high-frequency transceiver of the dual-band Wi-Fi module is connected to the transceiver selection module. The rectifier power supply module rectifies the received low-frequency Wi-Fi signal into DC to provide DC power to the chip.

[0011] The terahertz imaging module comprises a terahertz frequency doubling chain, a terahertz patch antenna array, control circuitry, and a feed network. The terahertz frequency doubling chain multiplies the Wi-Fi signal to the terahertz band and transmits it to the terahertz patch antenna array via the feed network for radiation. The control circuit controls the feed network to regulate the output power and phase of each antenna in the terahertz patch antenna array, thereby enabling scanning and radiating of terahertz waves and receiving the reflected waves. Transmission and reception are not performed simultaneously, thus avoiding interference. The control circuitry is also connected to a transmit / receive selection module, controlling whether the transmit or receive link is activated.

[0012] The downconversion module downconverts the reflected terahertz wave to the high-frequency band of the WIFI band. When the transceiver selection module is working in the transmit state, it transmits the downconverted signal from the high-frequency transceiver end of the dual-band WIFI module for external computer to receive and perform 3D reconstruction.

[0013] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0014] 1. It has no ionizing radiation and is of little harm to the human body.

[0015] 2. High precision. Terahertz scanning imaging is performed internally, resulting in high precision.

[0016] 3. It has a wide range of applications and can also be used by patients with implanted metal parts.

[0017] 4. Low cost.

[0018] 5. Comfortable user experience, no noise, no need for exposure, and no need for implanted tubes. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0020] Figure 1 This is a schematic diagram of the internal circuit structure of the capsule in an embodiment of the present invention.

[0021] Figure 2 This is a modeling and calculation model of the chip radiating outward from inside the stomach in an embodiment of the present invention.

[0022] Figure 3 This is an electric field distribution diagram of the chip radiating outward from inside the stomach in an embodiment of the present invention. Detailed Implementation

[0023] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] In the following embodiments, the terahertz band operating frequency is 120GHz-140GHz and the radio frequency band is the WIFI band (low frequency is 2.4GHz-2.4835GHz and high frequency is 5.15GHz-5.825GHz), but it is not limited to this frequency band.

[0026] like Figure 1 As shown, it includes a dual-band WIFI module, a rectifier power supply module, a transceiver selection module, a terahertz imaging module, and a down-conversion module. The rectifier power supply module, transceiver selection module, terahertz imaging module, and down-conversion module are integrated into a single chip, which, along with the dual-band WIFI module, is housed in a 3mm diameter capsule.

[0027] The dual-band Wi-Fi module's dual-band antenna is made of flexible material. The low-frequency operating frequency is 2.4 GHz, used to power the chip. The high-frequency operating frequency is 5.41 GHz, used for transmitting and receiving communications.

[0028] The rectifier power supply module rectifies the received low-frequency WIFI signal into a DC signal to power the chip.

[0029] The terahertz imaging module includes a terahertz frequency doubling chain, a terahertz patch antenna array, a control circuit, and a power supply network.

[0030] The downconversion module downconverts the terahertz signal to the high-frequency WIFI band and transmits it outside the human body through the dual-band WIFI module.

[0031] Working Principle: The dual-band Wi-Fi module receives externally provided Wi-Fi signals. The low-frequency Wi-Fi signal enters the rectifier power supply module through the low-frequency input terminal, outputting DC power as the DC power supply for the chip. The control circuit controls the transmit / receive selection module to activate the receiving link, transmitting the high-frequency Wi-Fi signal received by the dual-band Wi-Fi module to the terahertz imaging module. In the terahertz imaging module, the high-frequency Wi-Fi signal is first frequency-doubled to 130GHz through a terahertz frequency doubling chain, and then transmitted to the terahertz patch antenna array via a feeding network. It radiates terahertz waves and receives reflected waves; transmission and reception do not occur simultaneously, thus avoiding interference. The feeding network is controlled by the control circuit, which in turn controls the feeding method of the terahertz signal into the terahertz patch antenna array, allowing for radiation scanning in different directions. Figure 3 As shown, the electric field caused by the terahertz signal radiated inside the stomach exhibits a spatially varying distribution, which clearly reflects the internal condition of the stomach. Furthermore, the internal state of the stomach can be determined and imaged by analyzing the amplitude and phase information of the reflected wave. The reflected wave is down-converted to a high-frequency Wi-Fi signal via a down-conversion module. At this point, the control circuit controls the transceiver selection module to activate the transmission link, transmitting the down-converted high-frequency Wi-Fi signal carrying imaging information outward through the high-frequency transceiver of the dual-band Wi-Fi module. This signal is received by an external computer for 3D reconstruction.

[0032] The advantages of the swallowable radio frequency terahertz hybrid transceiver system chip for gastrointestinal medical testing proposed in this embodiment are explained as follows:

[0033] 1. Safety. Compared to X-ray imaging, terahertz imaging has no ionizing radiation and poses less harm to the human body.

[0034] 2. High precision. Compared to thermal imaging, this imaging scheme performs terahertz scanning imaging internally, resulting in high precision.

[0035] 3. It has a wide range of applications, and terahertz imaging poses no harm to patients with implanted metal.

[0036] 4. No noise. It does not suffer from the high noise level of MRI.

[0037] 5. Comfortable to use, no need for exposure, no need for implanted tubes.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A swallowable radio frequency terahertz hybrid transceiver system chip for gastrointestinal medical testing, comprising a dual-band WIFI module, a rectifier power supply module, a transceiver selection module, a terahertz imaging module, and a down-conversion module. Wherein, The rectifier power supply module, transceiver selection module, terahertz imaging module, and downconversion module are integrated into the chip. The chip and the dual-band WIFI module are placed together in a 3mm diameter capsule and taken by the patient on an empty stomach.

2. The swallowable radio frequency terahertz hybrid transceiver system chip for gastrointestinal medical detection according to claim 1, characterized in that, The dual-band WIFI module contains a dual-band antenna made of flexible material. The high-frequency band is used for transmitting and receiving communications, while the low-frequency band is used to continuously power the chip.

3. The swallowable radio frequency terahertz hybrid transceiver system chip for gastrointestinal medical detection according to claim 1, characterized in that, The low-frequency input terminal of the dual-band WIFI module is connected to the input terminal of the rectifier power supply module. The high-frequency transceiver terminal of the dual-band WIFI module is connected to the transceiver selection module.

4. The swallowable radio frequency terahertz hybrid transceiver system chip for gastrointestinal medical detection according to claim 3, characterized in that, The rectifier power supply module rectifies the low-frequency radio frequency signal of the dual-band WIFI module into a DC signal to power the chip.

5. A swallowable radio frequency terahertz hybrid transceiver system chip for gastrointestinal medical detection according to claim 3, characterized in that, The terahertz imaging module includes a terahertz frequency doubling chain, a terahertz patch antenna array, a control circuit, and a power supply network.

6. A swallowable radio frequency terahertz hybrid transceiver system chip for gastrointestinal medical detection according to claim 5, characterized in that, The terahertz frequency multiplication chain multiplies the high-frequency radio frequency signal in the dual-band WIFI module to the terahertz frequency band.

7. A swallowable radio frequency terahertz hybrid transceiver system chip for gastrointestinal medical detection according to claim 5, characterized in that, The output of the terahertz frequency multiplier chain is connected to the input of the feed network, and the output of the feed network is connected to the input of the terahertz patch antenna array. The feed network is controlled by the control circuit, which in turn controls the transmission power and phase shift of the terahertz patch antenna array, so that the terahertz wave is scanned and radiated in different directions and the reflected terahertz wave is received.

8. A swallowable radio frequency terahertz hybrid transceiver system chip for gastrointestinal medical detection according to claim 7, characterized in that, The control circuit is connected to the transmit / receive selection module and controls the transmit / receive selection module to work in receive or transmit mode.

9. A swallowable radio frequency terahertz hybrid transceiver system chip for gastrointestinal medical detection according to claim 8, characterized in that, The output of the terahertz patch antenna array is connected to the RF input of the downconversion module, which downconverts the reflected terahertz wave to the high frequency band of the WIFI band.

10. A swallowable radio frequency terahertz hybrid transceiver system chip for gastrointestinal medical detection according to claim 9, characterized in that, The output of the downconversion module is connected to the receiving end of the transceiver selection module. When the transceiver selection module is in the transmitting state, it transmits the downconverted signal from the high-frequency transceiver end of the dual-band WIFI module for external computer to receive and perform 3D reconstruction to obtain stomach spatial information.

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