Delay device, delay network and radio-frequency transceiving apparatus

Abstract

Provided in the present application are a delay device, a delay network and a radio-frequency transceiving apparatus, which are used for mitigating the problems of high cost, large loss, difficulty in miniaturization, etc., of delay solutions in existing radio-frequency phased array systems. The delay device comprises: a light-emitting assembly and a photodiode array assembly. The light-emitting assembly comprises one or more light-emitting units, which are used for outputting modulated optical signals. The photodiode array assembly comprises a plurality of cascaded photodiodes, wherein a first electrode of a first-stage photodiode is coupled to a radio-frequency signal output end by means of an inductive circuit, one inductive circuit is provided between first electrodes of any two adjacent stages of photodiodes, a first electrode of an nth-stage photodiode is further grounded by means of an inductive circuit and an impedance device, and a second electrode of each stage of photodiode is grounded; and after being irradiated by light emitted by the light-emitting units, the photodiodes output electrical signals to the radio-frequency signal output end, and the delays of the electrical signals outputted by the photodiodes at different stages are different.

Description

Delay device, delay network and radio frequency transceiver device

[0001] The present application claims priority to the Chinese patent application No. 202411379806.6, filed on September 29, 2024, and entitled "Delay device, delay network and radio frequency transceiver device", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, in particular to a delay device, a delay network and a radio frequency transceiver device. BACKGROUND

[0003] Phased array technology is one of the key technologies of wireless communication system. By adjusting the phase and / or amplitude of the electrical signals connected to each antenna, the direction of the antenna beam in space can be changed. Typically, the phased array system can adjust the phase based on a delay device. In related technologies, optical delay lines, micro-ring resonators, photonic crystals, optical fiber transmission and other technologies can be applied to phased arrays to adjust the pointing direction of wideband signals. However, the entire system needs to rely on multiple optical fibers, multiple wavelengths or tunable wavelength light sources, which results in large optical delay loss and high cost due to the introduction of optical amplifiers. In addition, due to the involvement of multiple devices such as optical fibers, multiple wavelength or tunable wavelength light sources, optical switch networks, optical lenses, etc., it is difficult to achieve miniaturization design. SUMMARY

[0004] The present application provides a delay device, a delay network and a radio frequency transceiver device to improve the problems of high cost, large loss and difficulty in miniaturization of the existing delay scheme in the radio frequency phased array system.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] In a first aspect, a delay device is provided, comprising: a radio frequency signal input end, a light emitting component, a photodiode array component and a radio frequency signal output end; the light emitting component comprises one or more light emitting units, and the light emitting units are configured to output modulated light signals according to a radio frequency signal received by the radio frequency signal input end; the photodiode array component comprises an impedance device, n photodiodes and n+1 inductive circuits, n is an integer greater than 1, and the n photodiodes are cascaded, wherein the first electrode of the first-stage photodiode is coupled to the radio frequency signal output end through one inductive circuit, one inductive circuit is arranged between the first electrodes of any two adjacent photodiodes, the first electrode of the n-stage photodiode is further grounded through one inductive circuit and the impedance device, and the second electrode of each photodiode is grounded; the photodiodes output electrical signals to the radio frequency signal output end after being irradiated by the light emitted by the light emitting units, and the electrical signals output by the photodiodes of different stages have different delays.

[0007] The time delay device provided by the embodiment of the present application adopts a strength modulation-direct detection architecture, the light beams of the light emitting units in the light emitting assembly are irradiated on different photodiodes by control, the time delay of the whole time delay device is configurable, the spatial light is coupled by the optical structure of the photosensitive surface of the photodiode, since the size of the photosensitive surface of the photodiode is usually larger than the cross-sectional size of the optical fiber, the light collection efficiency is higher than that of the time delay device realized by using the optical fiber, the optical system loss is lower, and in addition, the volume of the device can be reduced without setting the optical fiber; the embodiment of the present application utilizes the photosensitive output time delay signal of the photodiode, does not need to set the light source with adjustable wavelength or multiple wavelengths, and does not need to set the optical fiber, optical lens and other optical devices, the structure is simple, the overall cost of the device is lower, the volume is smaller, and the miniaturization of the device is beneficial.

[0008] In a possible implementation manner of the first aspect, the light emitting assembly includes a plurality of light emitting units, a target light emitting unit in the plurality of light emitting units is configured to output a modulated light signal to irradiate a target photodiode in the photodiode array assembly; the target light emitting unit includes one or more light emitting units; and the target photodiode includes one or more photodiodes.

[0009] In a possible implementation manner of the first aspect, the time delay device further includes a switch array disposed between the radio frequency signal input end and the plurality of light emitting units, and the switch array is configured to select a target light emitting unit in the plurality of light emitting units to be turned on according to a control signal.

[0010] In a possible implementation manner of the first aspect, the light emitting assembly includes one light emitting unit; and the time delay device further includes an optical path adjustment assembly including at least one mirror, the mirror being configured to adjust the light emitting direction of the light emitting unit so that the modulated light emitted by the light emitting unit is irradiated on the target photodiode in the photodiode array assembly. Such a setting manner can reduce the number of light sources and simplify the structure of the time delay device.

[0011] In a possible implementation manner of the first aspect, the optical path adjustment assembly includes a first mirror and a second mirror; the first mirror is configured to reflect the light emitted by the light emitting unit to the second mirror; and the second mirror is configured to move to reflect the light emitted by the light emitting unit to the target photodiode.

[0012] In a possible implementation manner of the first aspect, the plurality of photodiodes includes a first photodiode and a second photodiode, and the light emitted by the light emitting unit has the same length of optical path to the first photodiode and the second photodiode through the first mirror and the second mirror, so that the time delay error caused by the different optical paths between different photodiodes and the light emitting unit can be avoided.

[0013] In a possible implementation manner of the first aspect, the plurality of photodiodes are arranged in a circular arc shape; the light path adjusting assembly comprises a first reflector and a second reflector, the first reflector rotates to adjust the emission direction of the light emitted by the light-emitting unit to irradiate different positions of the second reflector, and the second reflector is configured to reflect the light emitted by the light-emitting unit to the target photodiode.

[0014] In a possible implementation manner of the first aspect, the rotation axis of the first reflector is located at the center of the circular arc formed by the photodiodes.

[0015] In a possible implementation manner of the first aspect, the light-emitting unit comprises one light-emitting device and one collimating lens; the light-emitting device is configured to output a modulated light signal according to the radio frequency signal; and the collimating lens is configured to collimate the light emitted by the light-emitting device.

[0016] In a possible implementation manner of the first aspect, the light-emitting unit comprises a plurality of light-emitting devices and a plurality of collimating lenses, one collimating lens corresponding to one light-emitting device; the plurality of light-emitting devices are connected in series, the collimating lenses are configured to collimate the light emitted by the light-emitting devices; and the light emitted by the plurality of light-emitting devices irradiates the same photodiode.

[0017] In a possible implementation manner of the first aspect, the photodiode array assembly further comprises a plurality of light collecting lenses, one light collecting lens corresponding to one photodiode.

[0018] The second aspect provides a radio frequency transceiver device, comprising at least one radio frequency link, the radio frequency link comprising a transmitting channel and a receiving channel; the transmitting channel and / or the receiving channel are provided with the delay device as provided in the first aspect and any implementation manner thereof.

[0019] In a possible implementation manner of the second aspect, the transmitting channel is configured to process a to-be-transmitted signal, and the transmitting channel comprises an intermediate frequency amplifier, a mixer, the delay device and a radio frequency amplifier; the to-be-transmitted signal sequentially passes through the intermediate frequency amplifier, the mixer, the delay device and the radio frequency amplifier.

[0020] In a possible implementation manner of the second aspect, the transmitting channel is configured to process a to-be-transmitted signal, and the transmitting channel comprises an intermediate frequency amplifier, a delay device, a mixer and a radio frequency amplifier; the to-be-transmitted signal sequentially passes through the intermediate frequency amplifier, the delay device, the mixer and the radio frequency amplifier.

[0021] In a possible implementation manner of the second aspect, the transmitting channel comprises a mixer and a delay device, and the delay device is configured to output a delayed local oscillator signal to the mixer.

[0022] In one possible implementation of the second aspect, the receiving channel is used to process the signal received by the antenna. The receiving channel includes a low-noise amplifier, a delay device, a mixer, and an intermediate frequency amplifier. The signal received by the antenna passes through the low-noise amplifier, the delay device, the mixer, and the intermediate frequency amplifier in sequence.

[0023] In one possible implementation of the second aspect, the receiving channel is used to process the signal received by the antenna. The receiving channel includes a low-noise amplifier, a mixer, a delay device, and an intermediate frequency amplifier. The signal received by the antenna passes through the low-noise amplifier, the mixer, the delay device, and the intermediate frequency amplifier in sequence.

[0024] In one possible implementation of the second aspect, the receiving channel includes a mixer and a delay device, wherein the delay device is used to output a delayed local oscillator signal to the mixer.

[0025] Thirdly, a radio frequency transceiver device is provided, including at least one radio frequency link, the radio frequency link including a transmit channel and a receive channel; the transmit channel and / or the receive channel are provided with a plurality of delay devices as provided in the first aspect and any implementation thereof.

[0026] In one possible implementation of the third aspect, the transmitting channel is used to process the signal to be transmitted, and the transmitting channel includes a first intermediate frequency amplifier, a first delay device, a second intermediate frequency amplifier, a mixer, a second delay device, and a radio frequency amplifier; the signal to be transmitted passes sequentially through the first intermediate frequency amplifier, the first delay device, the second intermediate frequency amplifier, the mixer, the second delay device, and the radio frequency amplifier; the first delay device and the second delay device are delay devices as provided in the first aspect and any implementation thereof.

[0027] In one possible implementation of the third aspect, the receiving channel is used to process the signal received by the antenna, and the receiving channel includes a low-noise amplifier, a second delay device, a mixer, a second intermediate frequency amplifier, a first delay device, and a first intermediate frequency amplifier; the signal received by the antenna passes sequentially through the low-noise amplifier, the second delay device, the mixer, the second intermediate frequency amplifier, the first delay device, and the first intermediate frequency amplifier; the first delay device and the second delay device are delay devices as provided in the first aspect and any implementation thereof.

[0028] In one possible implementation of the third aspect, the delay adjustment step size of the first delay device is larger than that of the second delay device, and the delay adjustment step size is the difference in delay between the electrical signals output by the two adjacent photodiodes.

[0029] In a possible implementation of the third aspect, a delay adjustment step of the first delay device is less than or equal to a total delay adjustment amount of the second delay device, and the total delay adjustment amount is a difference between a delay of the electrical signal output by the first-stage photodiode and a delay of the electrical signal output by the n-stage photodiode.

[0030] In a fourth aspect, a delay network is provided, including: M radio frequency signal input ends and M light-emitting components; a light path adjustment component; N photodiode array components; and N radio frequency signal output ends, M and N being positive integers greater than 1; the light-emitting components correspond to the radio frequency signal input ends one by one, and the light-emitting components are configured to output modulated light signals according to radio frequency signals received by the radio frequency signal input ends corresponding to the light-emitting components; the photodiode array components correspond to the radio frequency signal output ends one by one, and the photodiode array components include an impedance device, n photodiodes, and n+1 inductive circuits, n being an integer greater than 1, the n photodiodes being cascaded, wherein a first electrode of a first-stage photodiode is coupled to the radio frequency signal output end through one inductive circuit, a first electrode of any two adjacent-stage photodiodes is connected through one inductive circuit, a first electrode of an n-stage photodiode is connected to ground through one inductive circuit and the impedance device, and a second electrode of each photodiode is connected to ground; the photodiodes output electrical signals to the radio frequency signal output ends after being irradiated by light, and the electrical signals output by the photodiodes of different stages have different delays; and light emitted by the light-emitting components is adjusted in angle by the light path adjustment component to irradiate a target photodiode in a target photodiode array component, wherein the target photodiode array component includes at least one photodiode array component, and the target photodiode includes at least one photodiode.

[0031] In a possible implementation of the fourth aspect, the light-emitting component includes a power divider and a plurality of light-emitting units, the power divider is configured to distribute the received radio frequency signal to each light-emitting unit, and light emitted by the plurality of light-emitting units is adjusted in angle by the light path adjustment component to irradiate the target photodiode in the target photodiode array component.

[0032] In a possible implementation of the fourth aspect, the light-emitting component includes a plurality of light-emitting units connected in series, and light emitted by the plurality of light-emitting units is adjusted in angle by the light path adjustment component to irradiate the target photodiode in the target photodiode array component.

[0033] In a possible implementation of the fourth aspect, the light-emitting component includes a light-emitting unit and a beam splitter, the beam splitter is configured to split light emitted by the light-emitting unit, and the light split by the beam splitter is adjusted in angle by the light path adjustment component to irradiate the target photodiode in the target photodiode array component.

[0034] In a fifth aspect, a radio frequency transceiver device is provided, which comprises a transmitting channel and a receiving channel, and the transmitting channel and / or the receiving channel is provided with a delay network; the delay network comprises a plurality of radio frequency signal input ends, a delay device and a plurality of radio frequency signal output ends, a signal received by a first input end among the plurality of input ends is processed by the delay device and then output as a delayed signal through at least one output end among the plurality of output ends, and the delayed signals output by different output ends have the same or different delays.

[0035] In a possible implementation manner of the fifth aspect, the delay network is the delay network provided in the fourth aspect and any implementation manner thereof.

[0036] In a possible implementation manner of the fifth aspect, the transmitting channel is used for processing a plurality of to-be-transmitted signals; the transmitting channel comprises the delay network and a plurality of radio frequency amplifiers; a first to-be-transmitted signal among the plurality of to-be-transmitted signals is processed by the delay network of the transmitting channel and then output as a plurality of delayed signals, and the plurality of delayed signals are respectively amplified by the radio frequency amplifiers.

[0037] In a possible implementation manner of the fifth aspect, the receiving channel is used for processing a plurality of signals received by an antenna; the receiving channel comprises the delay network and a plurality of low-noise amplifiers; the plurality of signals received by the antenna are respectively amplified by the plurality of low-noise amplifiers, a first signal among the plurality of signals received by the antenna sequentially passes through the low-noise amplifier and the delay network in the receiving channel; the delay network in the receiving channel processes the first signal and then outputs a plurality of delayed signals.

[0038] In a sixth aspect, the embodiments of the present application further provide a communication device, which comprises a delay device and an antenna, and the antenna is used for transmitting a signal processed by the delay device, or the delay device is used for processing a signal received by the antenna; the delay device is the delay device provided in the first aspect and any implementation manner thereof, or the delay network provided in the fourth aspect and any implementation manner thereof. BRIEF DESCRIPTION OF DRAWINGS

[0039] FIG. 1 is a schematic diagram of an architecture of a communication system provided by an embodiment of the present application;

[0040] FIG. 2 is a schematic diagram of another architecture of a communication system provided by an embodiment of the present application;

[0041] FIG. 3 is a schematic diagram of a radio frequency phased array system provided by an embodiment of the present application;

[0042] FIG. 4 is a schematic diagram of another radio frequency phased array system provided by an embodiment of the present application;

[0043] FIG. 5 is a schematic diagram of a delay device provided by an embodiment of the present application;

[0044] FIG. 6 is a schematic diagram of another delay device provided by an embodiment of the present application;

[0045] Fig. 7 is a schematic diagram of another time delay device according to embodiments of the present application;

[0046] Fig. 8 is a schematic diagram of another time delay device according to embodiments of the present application;

[0047] Fig. 9 is a schematic diagram of another time delay device according to embodiments of the present application;

[0048] Fig. 10 is a schematic diagram of another time delay device according to embodiments of the present application;

[0049] Fig. 11 is a schematic diagram of a light emitting unit according to embodiments of the present application;

[0050] Fig. 12 is a schematic diagram of a radio frequency transceiver according to embodiments of the present application;

[0051] Fig. 13 is a schematic diagram of another radio frequency transceiver according to embodiments of the present application;

[0052] Fig. 14 is a schematic diagram of another radio frequency transceiver according to embodiments of the present application;

[0053] Fig. 15 is a schematic diagram of another radio frequency transceiver according to embodiments of the present application;

[0054] Fig. 16 is a schematic diagram of a time delay network according to embodiments of the present application;

[0055] Fig. 17 is a schematic diagram of another time delay network according to embodiments of the present application;

[0056] Fig. 18 is a schematic diagram of another time delay network according to embodiments of the present application;

[0057] Fig. 19 is a schematic diagram of another time delay network according to embodiments of the present application;

[0058] Fig. 20 is a schematic diagram of another time delay network according to embodiments of the present application;

[0059] Fig. 21 is a schematic diagram of another time delay network according to embodiments of the present application;

[0060] Fig. 22 is a schematic diagram of another radio frequency transceiver according to embodiments of the present application;

[0061] Fig. 23 is a schematic diagram of another radio frequency transceiver according to embodiments of the present application;

[0062] Fig. 24 is a schematic diagram of another radio frequency transceiver according to embodiments of the present application. DETAILED DESCRIPTION

[0063] Clearly, only some of the embodiments of the application are described herein and are shown in the drawings, which are intended to be illustrative only, not restrictive; other embodiments of the application will be apparent to those of ordinary skill in the art from the description and drawings.

[0064] The terms "first", "second", and the like in the description and in the claims do not denote any quantity or order, but are used to distinguish different elements, and are used interchangeably with "one", "another", and / or "at least one". The terms "plurality" and "a plurality" mean two or more. For example, a plurality of processing units means two or more processing units.

[0065] In addition, in the embodiments of the present application, "upper", "lower", "left", and "right" are not limited to the relative positions of the components shown in the drawings, and it should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and can be changed accordingly according to the change of the relative positions of the components shown in the drawings. In the drawings, the thicknesses of the layers and regions are exaggerated for clarity, and the size ratio relationship between the parts in the drawings does not reflect the actual size ratio relationship.

[0066] In the embodiments of the present application, unless specifically defined and limited otherwise, the term "connection" should be interpreted broadly, for example, "connection" can be fixed connection, or detachable connection, or integral; can be directly connected, or indirectly connected through an intermediate medium. In addition, the term "electrical connection" can be direct electrical connection, or indirect electrical connection through an intermediate medium.

[0067] In the embodiments of the present application, the term "module" is generally a functional structure divided according to logic, which can be implemented by pure hardware, or by a combination of software and hardware. In the embodiments of the present application, the association relationship of the associated objects is described by "and / or", which means that there can be three kinds of relationships, for example, A and / or B can represent three cases of A alone, B alone, and A and B together.

[0068] In the embodiments of the present application, the words "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the embodied words are used to present concepts in a particular, concrete manner. In the embodiments of the present application, the words "exemplary" or "for example" are used to present concepts in a particular, concrete manner.

[0069] The delay device or delay network provided in the application can be applied to various communication systems, for example: a Long Term Evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), a universal mobile telecommunication system (UMTS), a worldwide interoperability for microwave access (WiMAX) communication system, a future 5th Generation (5G) mobile communication system or a new radio access technology (NR), and three application scenarios of the 5G mobile communication system, i.e., an enhanced mobile broadband (eMBB), an ultra reliable low latency communication (uRLLC), and a massive machine type communication (mMTC), a device-to-device (D2D) communication system, a satellite communication system, an internet of things (IoT), a narrow band internet of things (NB-IoT) system, a global system for mobile communications (GSM), an enhanced data rate for GSM evolution (EDGE), a wideband code division multiple access (WCDMA) system, a code division multiple access 2000 (CDMA2000) system, a time division-synchronization code division multiple access (TD-SCDMA) system. The 5G mobile communication system can include a non-standalone (NSA) and / or a standalone (SA).

[0070] The delay device or delay network provided in the application can also be applied to future communication systems, and the application does not limit this.

[0071] FIG. 1 is a schematic diagram of an architecture of a communication system to which embodiments of the application are applied. As shown in FIG. 1, the communication system includes a first communication device and a second communication device, and point-to-point high-speed communication can be implemented between the first communication device and the second communication device. The first communication device and the second communication device can communicate based on a wireless network. The first communication device and the second communication device can include, but are not limited to, a base station, a vehicle-mounted terminal, or other terminal devices. For example, the terminal device can be a mobile phone, a Pad, or other terminal devices used by pedestrians, and the embodiments of the application do not limit this.

[0072] FIG. 2 is a schematic diagram of an architecture of another communication system to which embodiments of the application are applied. As shown in FIG. 2, the communication system includes a network device and at least one terminal device (such as terminal device 1 and terminal device 2 in FIG. 2). The network device can implement point-to-multipoint high-speed communication with multiple terminal devices. The terminal device is connected to the network device in a wireless manner. The network device can be connected to a core network device in a wireless or wired manner. The core network device and the network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the network device can be integrated on the same physical device. The terminal device can be fixed or movable. FIG. 2 is only a schematic diagram, and the communication system can also include other network devices, such as a wireless relay device and a wireless backhaul device, which are not shown in FIG. 2. The embodiments of the application do not limit the number of network devices and terminal devices in the mobile communication system.

[0073] The network device is an access device through which a terminal device accesses the mobile communication system in a wireless manner. The network device can be a base station NodeB, an evolved base station eNodeB, a base station in an NR mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. The embodiments of the application do not limit the specific technology and specific device form of the network device.

[0074] The terminal device can also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc.

[0075] The network device and the terminal device can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; can also be deployed on water surface; can also be deployed on aircraft, balloons and satellites in the air. Embodiments of the present application do not limit the application scenarios of the network device and the terminal device.

[0076] The network device and the terminal device can communicate with each other through licensed spectrum, unlicensed spectrum or both. Embodiments of the present application do not limit the spectrum resources used by the network device and the terminal device.

[0077] It should be understood that the specific forms of the network device and the terminal device are not limited in the present application.

[0078] The first communication device, the second communication device, the network device and the terminal device described above can each include a baseband unit, an analog-to-digital converter, a digital-to-analog converter, a radio frequency system and an array antenna. Taking the first communication device as an example, the signal processed by the baseband unit passes through the digital-to-analog converter and the radio frequency system in sequence and is transmitted by the array antenna; or the signal received by the array antenna passes through the radio frequency system and the analog-to-digital converter in sequence and reaches the baseband unit, and the received signal is processed by the baseband unit.

[0079] The first communication device, the second communication device, the network device and the terminal device provided by the embodiments of the present application can be communication devices using a radio frequency phased array technology. The phased array technology can adjust the width of an antenna beam by adjusting the phase and / or amplitude of electrical signals connected to each antenna, and can realize the directional change of the antenna beam in space.

[0080] There are various implementation schemes for the radio frequency phased array technology, including a radio frequency phase shifter, optical beam forming, etc. The radio frequency phase shifter control signal phase change belongs to a non-true delay device, and the phase shift value is independent of the frequency, which can cause the spatial beam pointing directions of different frequency points to be different, and it is difficult to realize accurate beam pointing of a wideband signal. The optical beam forming uses technologies such as real-time delay lines, micro-ring resonators, photonic crystals, optical fiber transmission, etc. to realize signal delay.

[0081] FIG. 3 shows a schematic diagram of a radio frequency phased array system, including a multi-wavelength light source / adjustable wavelength light source, an optical modulator, an optical power divider, a plurality of dispersive optical fibers, a plurality of photoelectric diodes, a plurality of amplifiers and an antenna. The light source is used to generate or output light signals of different wavelengths. The optical modulator can modulate a radio frequency signal onto the light signal to output a modulated light signal. The optical power divider distributes the modulated light signal to a plurality of dispersive optical fibers. Each dispersive optical fiber is connected to a photoelectric diode. The output end of the photoelectric diode is connected to the antenna through an amplifier.

[0082] The transmission speeds of light signals of different wavelengths in the dispersive optical fiber are different, so that different time delays can be introduced to light signals of different wavelengths by using the dispersive optical fiber. The time-delayed light signals are converted into electrical signals by the photoelectric diode to realize phase control of the electrical signals. However, such a radio frequency phased array system needs to use an adjustable wavelength light source or a multi-wavelength light source, which has a high device cost. In addition, the use of a plurality of dispersive optical fibers to realize time delay makes the system bulky and complex when the size of the antenna array is large, and it is difficult to realize miniaturization design.

[0083] FIG. 4 shows a schematic diagram of another radio frequency phased array system, including a laser, an optical modulator, an optical switch network, an optical fiber bundle formed by a plurality of optical fibers, a lens group formed by a plurality of lenses, a plurality of photoelectric diodes, a plurality of amplifiers and an antenna. The radio frequency phased array system realizes time delay based on optical path difference of an optical system. The light signal modulated by the optical modulator is connected to different optical fibers through the optical switch network. The optical fiber bundle is located at the focal plane of the lens. The light signal processed by the lens is transmitted in space to the lens group connected to the photoelectric diode. The transmission direction of the spatial light processed by the lens is regulated by using the optical switch network. The time delay of the light signal connected to the photoelectric diode is realized by using the optical path difference introduced in different directions.

[0084] The radio frequency phased array system shown in FIG. 4 combines free space optics and uses an imaging lens principle to realize phase shifting. The optical fiber structure connected to the photodiode needs to be designed with an optical light collection lens, which has optical loss. The optical fiber bundle connected to the optical switch network is difficult to make dense and continuous, which affects the beam adjustment range and accuracy. A larger scale optical fiber bundle is needed to achieve a larger range of beam adjustment range and improve accuracy. The overall scanning accuracy and the array size that can be supported are constrained by cost, efficiency, volume, etc.

[0085] As can be seen from the radio frequency phased array systems shown in FIGS. 3 and 4, the scheme using a dispersive optical fiber or an optical lens to realize delay has a high cost and involves many devices, such as a multi-wavelength light source or an adjustable wavelength light source, multiple optical fibers, an optical switch network, and an optical lens, which is difficult to realize a small and compact radio frequency system.

[0086] To improve the above problems, the embodiments of the present application provide a true delay scheme of a light source combined with a traveling wave structure photodiode array and a radio frequency phased array system based on the scheme. Different photodiodes are irradiated by light spots to control the time delay of electrical signals and realize wideband true delay.

[0087] Referring to FIG. 5, FIG. 5 is a schematic diagram of a delay device provided by an embodiment of the present application. The delay device provided by the embodiment of the present application includes a radio frequency signal input end RF_input, a light emitting component, a photodiode array component, and a radio frequency signal output end RF_output.

[0088] The light emitting component includes one or more light emitting units. The light emitting unit can include a vertical cavity surface emitting laser (VCSEL). The light emitting unit is configured to output a modulated light signal according to a radio frequency signal received by the radio frequency signal input end. The modulated light signal output by the light emitting unit can be a single beam of light, or multiple independent beams of light, or a single beam of light obtained by combining multiple beams of light.

[0089] The photodiode array component includes multiple photodiodes. The multiple photodiodes are combined with inductance circuits and impedance devices to form a traveling wave network structure. For example, the photodiode array component includes photodiodes PD1 to PDn, an inductance circuit L0, inductance circuits L1 to Ln+1, and an impedance device Z. The n photodiodes are cascaded.

[0090] The first electrode of the first photodiode is coupled with the radio frequency signal output end through an inductive circuit, an inductive circuit is arranged between the first electrodes of any two adjacent photodiodes, and the first electrode of the nth photodiode is further grounded through an impedance matching network, the impedance matching network comprising an inductive circuit and an impedance device connected in series, and the second electrode of each photodiode is grounded. The first electrode of the photodiode can be an anode, and the second electrode can be a cathode; or the first electrode of the photodiode can be a cathode, and the second electrode can be an anode.

[0091] In combination with FIG. 5, the photodiode PD1 is the first photodiode, the photodiode PDn is the nth photodiode, the first electrode of the photodiode PD1 is connected with the radio frequency signal output end RF_output through the inductive circuit L0, the first electrode of the photodiode PD2 is connected with the first electrode of the photodiode PD1 through the inductive circuit L1, the first electrode of the photodiode PDn is connected with the first electrode of the photodiode PDn-1 through the inductive circuit Ln, the first electrode of the photodiode PDn is further grounded GND through the inductive circuit Ln+1 and the impedance device Z connected in series, and the second electrodes of the photodiodes PD1 to PDn are all electrically connected with the ground GND.

[0092] The light emitting unit can output modulated light signals to the photodiodes, and the photodiodes output electrical signals to the radio frequency signal output end after being irradiated by the light emitted by the light emitting unit, for example, the photodiode PD1 outputs a signal i1 to the radio frequency signal output end RF_output after being irradiated by the light, the photodiode PD2 outputs a signal i2 to the radio frequency signal output end RF_output after being irradiated by the light, and the photodiode PDn outputs a signal in to the radio frequency signal output end RF_output after being irradiated by the light. n These signals are output through the radio frequency signal output end RF_output, and are denoted as Iout. Iout can include any one or more of the signals i1 to in. n

[0093] The equivalent inductance of the photodiode in combination with the inductive circuit can form a basic delay unit, for example, the equivalent inductance of the photodiode PD2 in combination with the inductive circuit L1 and the inductive circuit L2 constitutes a basic delay unit in FIG. 5. Similarly, the equivalent inductance of the photodiode PD1 in combination with the inductive circuit can also constitute a basic delay unit. The delays generated by the basic delay units can be the same. The paths of the signals output by the photodiodes of different levels to the radio frequency signal output end are different, and the number of the basic delay units passed by the signals is different. Therefore, the delays of the signals output by the photodiodes of different levels through the radio frequency signal output end RF_output are different.

[0094] ​When the light emitted by the light emitting unit irradiates different photodiodes, the signal output by the radio frequency signal output end RF_output has different time delays. For example, if the light emitted by the light emitting unit irradiates the first-stage photodiode PD1, the photodiode PD1 outputs a signal i1, and the signal i1 output by the radio frequency signal output end RF_output has a time delay of τ; if the light emitted by the light emitting unit irradiates the second-stage photodiode PD2, the photodiode PD2 outputs a signal i2, and the signal i2 output by the radio frequency signal output end RF_output has a time delay of 2τ; if the light emitted by the light emitting unit irradiates the nth-stage photodiode PDn, the photodiode PDn outputs a signal in, and the signal in output by the radio frequency signal output end RF_output has a time delay of nτ. n n The signal output by the radio frequency signal output end RF_output has a time delay of nτ.

[0095] The delay device provided in the embodiment of the present application adopts an intensity modulation with direct detection (IM-DD) architecture, controls the light beams of the light emitting units in the light emitting assembly to irradiate different photodiodes, realizes the time delay of the entire delay device being configurable, and utilizes the photosensitive surface optical structure of the photodiode to couple spatial light. Since the size of the photosensitive surface of the photodiode is usually larger than the cross-sectional size of the optical fiber, the light collection efficiency of the delay device provided in the embodiment of the present application is higher than that of the delay device realized by using the optical fiber, the optical system loss is lower, the optical fiber does not need to be arranged, and the volume of the device can be reduced. In addition, the basic delay unit formed by the photodiode and the inductive circuit is utilized to realize the delay, a light source with adjustable wavelength or multiple wavelengths does not need to be arranged, other optical devices such as the optical fiber and the optical lens do not need to be arranged, the overall cost of the device is lower, the volume of the device is smaller, and the device miniaturization is facilitated.

[0096] In a possible implementation, referring to FIG. 6, the light emitting assembly can include a plurality of light emitting units, for example, the light emitting units VCSEL1 to VCSELn. A target light emitting unit in the plurality of light emitting units is configured to output a modulated light signal according to a radio frequency signal received by the radio frequency signal input end RF_input to irradiate a target photodiode in the photodiode array assembly. Here, the target light emitting unit can include one or more light emitting units, and the target photodiode can include one or more photodiodes.

[0097] ​The time delay device further comprises a switch array, which is arranged between the radio frequency signal input end RF_input and the plurality of light emitting units, and is used to connect the radio frequency signal input end RF_input and a target light emitting unit in the plurality of light emitting units in response to a control signal. The switch array can be a one-to-many switch array formed by a plurality of switch devices, i.e., the switch array can connect the radio frequency signal input end RF_input and one or more light emitting units, and the switch devices can include transistors or other types of switch devices.

[0098] For example, the light emitting units can be one-to-one corresponding to the photodiodes, and the light emitted by each light emitting unit is only irradiated to the corresponding photodiode. Taking a target light emitting unit including one light emitting unit and a target photodiode including one photodiode as an example, the switch array connects the radio frequency signal input end and the target light emitting unit (e.g., the light emitting unit VCSELn shown in FIG. 6), the target light emitting unit outputs a modulated light signal according to the radio frequency signal received by the radio frequency signal input end RF_input, the light emitted by the target light emitting unit is irradiated to the corresponding photodiode (e.g., the photodiode PDn shown in FIG. 6), which is the target photodiode, and the target photodiode outputs an electrical signal meeting the time delay requirement to the radio frequency signal output end RF_output after being irradiated by the light.

[0099] In actual applications, the target photodiode can be determined according to the time delay requirement. For example, if the required signal time delay is τ, the target photodiode can be determined as the first-stage photodiode; if the required signal time delay is nτ, the target photodiode can be determined as the nth-stage photodiode. The light emitting unit corresponding to the target photodiode is determined as the target light emitting unit, the switch array connects the target light emitting unit and the radio frequency signal input end, the target light emitting unit outputs a modulated light signal, and the target photodiode outputs a signal meeting the time delay requirement to the radio frequency signal output end after being irradiated by the light emitted by the target light emitting unit.

[0100] Alternatively, an optical element (e.g., a beam splitter, a mirror, etc.) can be arranged to enable the modulated light signal output by each light emitting unit to irradiate a group of photodiodes. In this case, the target photodiode can include a plurality of photodiodes, and the target light emitting unit can include one or more light emitting units. The photodiodes that can be irradiated by the light of different light emitting units can have an intersection, and in this case, the number of light emitting units can be less than the number of photodiodes.

[0101] Alternatively, an optical element (e.g., a mirror) can also be provided so that the modulated light signals output by the plurality of light emitting units can be irradiated to the same photodiode, in which case, the target light emitting unit can include a plurality of one or more light emitting units, and the target photodiode can include one or more photodiodes, in which case, the number of light emitting units can be greater than the number of photodiodes.

[0102] In the above embodiments, the light emitting assembly includes a plurality of light emitting units, and the embodiments of the present application also provide another time delay device for reducing the number of light sources, simplifying the structure of the time delay device, and reducing the cost.

[0103] Referring to FIG. 7, the time delay device provided by the embodiments of the present application includes a radio frequency signal input end RF_input, a light emitting assembly, a photodiode array assembly, and a radio frequency signal output end RF_output. The time delay principle of the time delay device provided by the embodiments of the present application is basically the same as that of the time delay device provided by the foregoing embodiments, and the embodiments of the present application only introduce the different parts.

[0104] The light emitting assembly can include one light emitting unit connected to the radio frequency signal input end, for outputting a modulated light signal according to the radio frequency signal received by the radio frequency signal input end. The time delay device further includes an optical path adjusting assembly, which can adjust the optical path of the light emitted by the light emitting unit, so that the modulated light emitted by the light emitting unit irradiates the target photodiode in the photodiode array assembly. For example, the optical path adjusting assembly can include at least one mirror, which can be used to change the light emitting direction of the modulated light emitted by the light emitting unit, so that it irradiates the target photodiode.

[0105] In a possible implementation, as shown in FIG. 7, the optical path adjusting assembly includes one mirror, by adjusting the reflection angle of the mirror, the direction of the modulated light emitted by the light emitting unit can be adjusted so that it irradiates the target photodiode, thereby outputting an electrical signal meeting the time delay requirement. By adjusting the direction of the modulated light through the optical path adjusting assembly, the power supply structure can be simplified, and the cost can be reduced.

[0106] In a possible implementation, referring to FIG. 8, the optical path adjusting assembly includes a first mirror and a second mirror, the first mirror is used to reflect the modulated light output by the light emitting unit to the second mirror, and the second mirror can reflect the light to the photodiode, wherein the second mirror can move position to reflect the modulated light emitted by the light emitting unit to the target photodiode, thereby outputting an electrical signal meeting the time delay requirement.

[0107] Exemplarily, the light emitting assembly can be provided with a collimating lens, the light emitted by the light emitting unit can be collimated into a collimated light beam by the collimating lens, the mirror surface of the first reflector can form a 45-degree angle with the collimated light beam; the mirror surface of the second reflector is perpendicular to the mirror surface of the first reflector, that is, forms a 45-degree angle with the reflected light rays of the first reflector and the second reflector, so that the second reflector can reflect the light to irradiate the target photodiode.

[0108] The plurality of photodiodes of the photodiode array assembly can be arranged in a straight line, for example, the plurality of photodiodes in the photodiode array assembly are arranged in a first direction, and the second reflector can move in the first direction, for example, the second reflector can be installed on a slide rail extending in the first direction, and the second reflector can move back and forth on the slide rail. When moving to different positions, the light can be reflected to different target photodiodes.

[0109] In actual application, the target photodiode can be determined according to the delay requirement, the second reflector is controlled to move to the position corresponding to the target photodiode, the light emitting unit outputs a modulated light signal, and the first reflector and the second reflector reflect the light emitted by the light emitting unit to irradiate the target photodiode. After the target photodiode is irradiated by the light emitted by the light emitting unit, a signal meeting the delay requirement is output to the radio frequency signal output end.

[0110] The embodiment of the present application provides a delay device, which does not need to be provided with a plurality of light emitting units, and delay control is realized by combining one light emitting unit with an optical path adjusting assembly, thereby reducing the number of light emitting units, the light output by the light emitting unit is coupled to the photodiode through space, and there is no need to be provided with an optical fiber to transmit the light signal, thereby simplifying the structure of the delay device and reducing the cost of the delay device.

[0111] In the delay device provided in the foregoing implementation manner, the arrangement direction of the photodiodes is parallel to the moving direction of the second reflector, and the optical path length between the light emitting unit and different photodiodes serving as target photodiodes is different. FIG. 9 shows a schematic diagram of another delay device provided by the embodiment of the present application. The delay device provided by the embodiment of the present application is basically the same as the delay device shown in FIG. 8 in principle, and the difference lies in the arrangement manner of the photodiodes in the light emitting assembly. The embodiment of the present application only introduces the different parts.

[0112] The photodiode array assembly includes a plurality of photodiodes, for example, the photodiode array assembly includes a first photodiode and a second photodiode, and the optical path length of the light emitted by the light emitting unit to the first photodiode through the first reflector and the second reflector is the same as the optical path length to the second photodiode, so as to improve the delay precision.

[0113] For the convenience of description, only a schematic diagram of the arrangement of the photodiodes is shown in FIG. 9. In combination with FIG. 9, the second mirror can move back and forth along the first direction, and the plurality of photodiodes are arranged along the second direction, which is at an angle of 45 degrees with the first direction, or it can be considered that a straight line formed by the arrangement of the photodiodes is at an angle of 45 degrees with the light emitted by the second mirror. In this case, the optical path length from the light emitting unit to any one of the photodiodes via the first mirror and the second mirror is the same, and the delay error caused by different target photodiodes due to different optical paths between the light emitting unit and the target photodiodes can be avoided.

[0114] In the above embodiment, the plurality of photodiodes of the photodiode array assembly are arranged in a straight line. In another possible implementation, the plurality of photodiodes can also be arranged in a circular arc shape.

[0115] For example, referring to FIG. 10, FIG. 10A and FIG. 10B show schematic diagrams of another time delay device provided in the embodiments of the present application. The time delay principle of the time delay device provided in the embodiments of the present application is basically the same as that of the time delay device shown in FIG. 8 or FIG. 9, and the difference lies in the arrangement of the photodiodes in the light emitting assembly and the arrangement of the optical path adjustment assembly. The embodiments of the present application only introduce the different parts.

[0116] In combination with FIG. 10A and FIG. 10B, the photodiode array assembly includes a plurality of photodiodes arranged in a circular arc shape, and the optical path adjustment assembly includes a first mirror and a second mirror. The first mirror can rotate to adjust the emission direction of the modulated light emitted by the light emitting unit, reflect the modulated light to different positions of the second mirror, and the second mirror is used to reflect the modulated light emitted by the light emitting unit to a target photodiode.

[0117] For example, the light emitting assembly can be provided with a collimating lens, the light emitted by the light emitting unit can be collimated into a collimated light beam by the collimating lens, and the mirror surface of the first mirror can be at an angle of 45 degrees with the collimated light beam. The mirror surface of the second mirror is perpendicular to the mirror surface of the first mirror, that is, the mirror surface of the second mirror is at an angle of 45 degrees with the reflected light of the first mirror and the second mirror, and the second mirror can reflect the light to the target photodiode.

[0118] For example, in combination with FIG. 10B, the mirror surface of the second mirror can also be a fan surface corresponding to the circular arc shape of the arrangement of the photodiodes. The rotation axis of the first mirror is located at the center of the circular arc shape formed by the arrangement of the photodiodes. When the first mirror rotates, the light emitted by the light emitting unit can be reflected to different positions of the second mirror, and the second mirror reflects the light reflected by the first mirror to a target photodiode. The target photodiode can include one or more photodiodes.

[0119] The photoelectric diodes in the time delay device are arranged in an arc shape, and the rotation shaft of the first reflector is located at the center of the arc shape. In this way, the optical path length of the light emitted by the light emitting unit to any one of the photoelectric diodes is the same, and the time delay error caused by different optical paths between the light emitting unit and the target photoelectric diode can be avoided.

[0120] In the time delay device provided in the foregoing embodiments, the light emitting unit can include one or more light emitters. FIGS. 11A and 11B show schematic diagrams of the light emitting unit. For example, referring to FIG. 11A, in a possible implementation, the light emitting unit includes one light emitter, for example, a light emitter VCSEL, which emits a modulated light signal for a radio frequency signal received by the radio frequency signal input end RF_input. The light emitted by the light emitter can irradiate the target photoelectric diode, or the light emitted by the light emitter can irradiate the target photoelectric diode after being adjusted by the optical path adjustment assembly.

[0121] The light emitting unit can further be provided with a collimating lens. The collimating lens is used to collimate the light emitted by the light emitter, so that the light emitted by the light emitter forms a collimated light beam.

[0122] In another possible implementation, referring to FIG. 11B, the light emitting unit includes a plurality of light emitters and a plurality of collimating lenses. For example, the light emitting unit includes light emitters VCSEL1, VCSEL2, VCSEL3, and VCSEL4, and the collimating lenses correspond to the light emitters one by one. The plurality of light emitters are connected in series, and the collimating lenses are used to collimate the light emitted by the light emitters. The light emitted by the light emitters forms a collimated light beam, and the light emitted by the plurality of light emitters irradiates the same photoelectric diode. For example, the light emitting unit can include 2 to 4 light emitters, which are connected in series. The series connection of the light emitters improves the slope efficiency of the light source system, effectively reduces the photoelectric and electro-optical processing loss, and further reduces the loss of the true time delay network.

[0123] Referring to FIGS. 11A and 11B, each light emitting unit can be provided with a corresponding biasing device, which is used to inject a direct current bias voltage to provide a positive voltage for the light emitter, so that the light emitter can emit light normally.

[0124] The light emitter provided with the collimating lens can improve the utilization rate of light. Similarly, in the photoelectric diode array assembly, the light collecting efficiency can also be improved by providing the light collecting lens. For example, the photoelectric diode array assembly includes a plurality of light collecting lenses, and each photoelectric diode is provided with a corresponding light collecting lens, so as to improve the light collecting efficiency of the photoelectric diode.

[0125] The light emitting device can be a vertical cavity surface emitting laser, a distributed feedback (DFB) laser or other broadband light source, or the light emitting device can also be a light-emitting diode (LED) or other light emitting device.

[0126] In the delay device provided by the embodiment, the light emitted by the light emitting unit can irradiate the photodiode, and the photodiode outputs an electrical signal to the radio frequency signal output end after being irradiated by the light emitted by the light emitting unit. The equivalent inductance of the photodiode combined with the inductance circuit before and after the photodiode can form a basic delay unit.

[0127] In a possible implementation, the equivalent inductance of the inductance circuit between the two adjacent photodiodes is L, the equivalent inductance of the inductance circuit between the first photodiode and the radio frequency signal output end is L / 2, and the first electrode of the nth photodiode is provided with an inductance circuit and an impedance device, where the equivalent inductance of the inductance circuit is L / 2. In this way, each photodiode combined with the equivalent inductance of the inductance circuit can form a T-shaped basic delay unit, and the impedance of the T-shaped basic delay unit is The delay of the basic delay unit formed by the T-shaped basic delay unit satisfies C is the equivalent capacitance of the photodiode.

[0128] It is mentioned in the foregoing embodiment that different target photodiodes can be selected to output signals with different delays. For example, if the required signal delay is τ, the target photodiode can be determined as the first photodiode; if the required signal delay is nτ, the target photodiode can be determined as the nth photodiode. It can be seen that the delay adjustment step of the delay device is τ, that is, the delay amount of the basic delay unit. The delay adjustment range of the delay device is τ~nτ, where τ is the minimum delay amount of the delay device, that is, the delay of the signal output by the first photodiode to the radio frequency signal output end, and nτ is the maximum delay amount of the delay device, that is, the delay of the signal output by the nth photodiode to the radio frequency signal output end. The total delay adjustment amount is defined as the difference between the maximum delay amount (that is, the delay of the electrical signal output by the nth photodiode) and the minimum delay amount (that is, the delay of the electrical signal output by the first photodiode), that is, (n-1)τ. By increasing the number of photodiodes, the range of the total delay adjustment amount can be expanded. For example, the equivalent capacitance of a photodiode with a photosensitive surface diameter of 38 um is about 120 fF, and the delay step of the basic delay unit is about 6 ps. A 32-stage photodiode array provides a delay range of about 180 ps, and a 64-stage photodiode array provides a delay range of about 370 ps.

[0129] In addition, the time delay step can be controlled by designing different impedance networks, for example, the equivalent capacitance of a photodiode with a photosensitive surface diameter of 16 um is about 60 fF, and the impedance of the basic delay unit is designed according to 50 ohm, and the time delay step is about 3 ps; the impedance of the basic delay unit is designed according to 20 ohm, and the time delay step is about 1.2 ps.

[0130] Alternatively, the time delay precision can be improved by using a high-bandwidth photodiode, for example, the equivalent capacitance of a wideband single-carrier PD is about 20 fF, and the impedance of the basic delay unit is designed according to 50 ohm, and the time delay step is about 1 ps, and the time delay step is smaller and the precision is higher.

[0131] Alternatively, the time delay precision can be further improved by connecting a photodiode or a capacitor in series for each photodiode, for example, the overall equivalent capacitance of a photodiode connected in series with a photodiode is about 10 fF, and the impedance of the basic delay unit is designed according to 50 ohm, and the time delay step is about 0.5 ps.

[0132] In a possible implementation, the time delay device can further be provided with a radio frequency amplifier at the radio frequency signal input end RF_input to amplify the radio frequency signal; and the time delay device can further be provided with a radio frequency amplifier at the radio frequency signal output end RF_output to amplify and output the time delayed signal.

[0133] In some possible implementations, a biasing device can be further provided between the first-stage photodiode and the radio frequency signal output end RF_output.

[0134] Based on the time delay device provided in the foregoing embodiments, the embodiments of the present application further provide a radio frequency transceiver device, which comprises at least one radio frequency link, and the at least one radio frequency link can realize radio frequency phased array in combination with an array antenna.

[0135] The radio frequency link comprises a transmitting channel and a receiving channel, and the transmitting channel and / or the receiving channel is provided with the time delay device provided in the foregoing embodiments. The time delay device is used to realize signal time delay, and the time delay device can be arranged at different positions in the radio frequency link, for example, the time delay device can be arranged in the receiving channel, or the time delay device can be arranged in the transmitting channel, or the time delay device can be arranged in both the transmitting channel and the receiving channel. For ease of description, the embodiments of the present application take the transmitting channel and the receiving channel both provided with the time delay device as an example for illustration.

[0136] Firstly, the transmitting channel is taken as an example. Generally, the transmitting channel comprises intermediate frequency amplifiers, mixers, radio frequency amplifiers and the like, and the to-be-transmitted signal is transmitted through an antenna after being processed by the intermediate frequency amplifiers, the mixers and the radio frequency amplifiers. The time delay device can be arranged before the mixer, or arranged after the mixer, or applied to the local oscillator link of the mixer.

[0137] Referring to Fig. 12, in one possible implementation, the transmitting channel includes an intermediate frequency amplifier, a mixer, a delay device and a radio frequency amplifier, the transmitting channel is used to process a signal to be transmitted, the signal to be transmitted passes through the intermediate frequency amplifier, the mixer, the delay device and the radio frequency amplifier in sequence and is then transmitted by an antenna, wherein the delay device is used to perform delay processing on the signal to be transmitted after mixing.

[0138] The receiving channel is used to process a signal received by the antenna, the receiving channel includes a low noise amplifier, a delay device, a mixer and an intermediate frequency amplifier, the signal received by the antenna passes through the low noise amplifier, the delay device, the mixer and the intermediate frequency amplifier in sequence, the delay device is used to perform delay processing on the signal processed by the low noise amplifier, the signal after the delay processing is down-converted to an intermediate frequency by the mixer and is then amplified by the intermediate frequency amplifier.

[0139] For example, the transmitting channel and the receiving channel can be connected to different antennas respectively, or the transmitting channel and the receiving channel can be connected to the same antenna through a duplexer.

[0140] Referring to Fig. 13, in another possible implementation, the transmitting channel includes an intermediate frequency amplifier, a delay device, a mixer and a radio frequency amplifier, the transmitting channel is used to process a signal to be transmitted, the signal to be transmitted passes through the intermediate frequency amplifier, the delay device, the mixer and the radio frequency amplifier in sequence and is then transmitted by an antenna, wherein the delay device is used to perform delay processing on the signal to be transmitted at the intermediate frequency, the signal to be transmitted after the delay processing is up-converted to a radio frequency signal by the mixer and is then amplified by the radio frequency amplifier and transmitted by the antenna.

[0141] The receiving channel is used to process a signal received by the antenna, the receiving channel includes a low noise amplifier, a mixer, a delay device and an intermediate frequency amplifier, the signal received by the antenna passes through the low noise amplifier, the mixer, the delay device and the intermediate frequency amplifier in sequence. The mixer is used to mix the signal amplified by the low noise amplifier, so that the signal received by the antenna is reduced to an intermediate frequency, the delay device performs delay processing on the signal reduced to the intermediate frequency, and the signal after the delay is amplified by the intermediate frequency amplifier.

[0142] In the foregoing examples, the delay processing is performed on the signal before mixing and the delay processing is performed on the signal after mixing respectively, in one possible implementation, the local oscillator signal of the mixer can also be subjected to delay processing.

[0143] Referring to FIG. 14, in another possible implementation, the transmitting channel includes an intermediate frequency amplifier, a delay device, a frequency mixer, and a radio frequency amplifier, and the transmitting channel is configured to process a signal to be transmitted, wherein the delay device is configured to output a delayed local oscillator signal to the frequency mixer, the signal to be transmitted is amplified by the intermediate frequency amplifier, the amplified signal to be transmitted is mixed with the delayed local oscillator signal in the frequency mixer, and the mixed signal to be transmitted is amplified by the radio frequency amplifier and then transmitted by the antenna.

[0144] The receiving channel is configured to process a signal received by the antenna, and the receiving channel includes a low noise amplifier, a frequency mixer, a delay device, and an intermediate frequency amplifier, wherein the delay device is configured to output a delayed local oscillator signal to the frequency mixer, the radio frequency signal received by the antenna is amplified by the low noise amplifier, and then mixed with the delayed local oscillator signal in the frequency mixer, and the mixed signal is down-converted to an intermediate frequency signal, and the intermediate frequency signal is amplified by the intermediate frequency amplifier.

[0145] For example, the delay device described above can be the delay device provided in any of the embodiments of FIGS. 5-10. In addition, the embodiments of the present application are described by taking the delay device arranged in the transmitting channel and the receiving channel as an example, and in other possible implementations, only the transmitting channel or only the receiving channel can be provided with the delay device. In addition, the delay device can be arranged at different positions in the transmitting channel and the receiving channel, for example, in the transmitting channel, the delay device is arranged before the mixing, and in the receiving channel, the delay device is arranged after the mixing.

[0146] The radio frequency transceiver device provided by the embodiments of the present application uses a true delay network constructed by a low-cost light source and a photodiode to realize signal delay, which can reduce the cost and complexity of the phased array implementation, and realize a wideband true delay phased array system.

[0147] In the above embodiments, the transmitting channel or the receiving channel of the radio frequency transceiver device is taken as an example to describe the arrangement of one delay device, and in some possible implementations, multiple delay devices can be arranged in the transmitting channel or the receiving channel. For example, the radio frequency transceiver device includes at least one radio frequency link, the radio frequency link includes a transmitting channel and a receiving channel, and the transmitting channel and / or the receiving channel is provided with a delay device as described in any of the embodiments of FIGS. 5-10.

[0148] The radio frequency transceiver device includes one or more radio frequency links, and each radio frequency link includes a transmitting channel and a receiving channel. The transmitting channel is configured to process a signal to be transmitted. Referring to FIG. 15, the transmitting channel includes a first intermediate frequency amplifier, a first delay device, a second intermediate frequency amplifier, a frequency mixer, a second delay device, and a radio frequency amplifier. The signal to be transmitted passes through the first intermediate frequency amplifier, the first delay device, the second intermediate frequency amplifier, the frequency mixer, the second delay device, and the radio frequency amplifier in sequence. The first delay device and the second delay device are delay devices as described in any of the embodiments of FIGS. 5-10.

[0149] In a possible implementation, the transmitting channel can further include a third delay device, which is configured to output a delayed local oscillator signal to the mixer. The third delay device can be a delay device provided in any of the preceding embodiments of FIGS. 5-10.

[0150] The receiving channel is configured to process a signal received by the antenna, and includes a low-noise amplifier, a second delay device, a mixer, a second intermediate frequency amplifier, a first delay device, and a first intermediate frequency amplifier. The signal received by the antenna passes through the low-noise amplifier, the second delay device, the mixer, the second intermediate frequency amplifier, the first delay device, and the first intermediate frequency amplifier in sequence. The first delay device and the second delay device can be delay devices provided in any of the preceding embodiments of FIGS. 5-10.

[0151] In a possible implementation, the receiving channel can further include a third delay device, which is configured to output a delayed local oscillator signal to the mixer. The third delay device can be a delay device provided in any of the preceding embodiments of FIGS. 5-10.

[0152] As mentioned in the foregoing examples, the transmitting channel and the receiving channel can be provided with delay devices at the same time, or only the transmitting channel is provided with delay devices, or only the receiving channel is provided with delay devices.

[0153] In the embodiments, the delay adjustment range of the delay device operating at a low frequency is larger, and the adjustment precision can be lower. The delay adjustment range of the delay device operating at a high frequency is smaller, and the adjustment precision is higher. For example, in the transmitting channel and the receiving channel, the delay adjustment step of the first delay device is larger than the delay adjustment step of the second delay device. The delay adjustment step is the difference between the delays of the electrical signals output by two adjacent photodiodes. The delay adjustment step of the first delay device is smaller than or equal to the total delay adjustment amount of the second delay device. The total delay adjustment amount is the difference between the delays of the electrical signals output by the first photodiode and the nth photodiode. Through such a setting manner, the adjustable range of the signal delay can be improved, and the precision of the signal delay adjustment can also be improved. The delay adjustment step of the first delay device is relatively large, and can be used for coarse adjustment. The delay adjustment step of the second delay device is relatively small, and can be used for fine adjustment. The signal delay is adjusted in combination of the first delay device and the second delay device, and large-range and high-precision adjustment can be achieved.

[0154] Based on the basic principle of the delay device provided in the foregoing embodiments, the embodiments further provide a delay network. As shown in FIG. 16, the delay network includes M radio frequency signal input ends, M light-emitting components, a light path adjustment component (not shown in the figure), N photodiode array components, and N radio frequency signal output ends. M and N are positive integers greater than 1.

[0155] The light emitting component corresponds to the radio frequency signal input, for example, the light emitting component 1 corresponds to the radio frequency signal input RF_input1, the light emitting component M corresponds to the radio frequency signal input RF_inputM, and the light emitting component outputs a modulated light signal according to the radio frequency signal received by the corresponding radio frequency signal input.

[0156] The photodiode array component corresponds to the radio frequency signal output, for example, the photodiode array component 1 corresponds to the radio frequency signal output RF_output1, the photodiode array component 2 corresponds to the radio frequency signal output RF_output2, and the photodiode array component N corresponds to the radio frequency signal output RF_outputN.

[0157] The photodiode array component includes an impedance device, n photodiodes, and n+1 inductance circuits, where n is an integer greater than 1, and the n photodiodes are cascaded, wherein the first electrode of the first-stage photodiode is coupled to the radio frequency signal output through an inductance circuit, an inductance circuit is arranged between the first electrodes of any two adjacent-stage photodiodes, the first electrode of the n-stage photodiode is further coupled to ground through an inductance circuit and the impedance device, the second electrode of each-stage photodiode is coupled to ground, the photodiode outputs an electrical signal to the radio frequency signal output after being irradiated by light, and the electrical signals output by the photodiodes of different stages have different time delays.

[0158] The photodiode array component provided in the embodiments of the present application has the same structure and principle as the photodiode array component provided in the embodiments shown in FIGS. 5-10, and the embodiments of the present application will not be described again. For details, refer to the contents in the foregoing embodiments.

[0159] The modulated light output by the light emitting component is adjusted in angle by the optical path adjustment component to irradiate a target photodiode in a target photodiode array component, wherein the target photodiode array component includes one or more photodiode array components, and the target photodiode includes one or more photodiodes. That is, the modulated light output by each light emitting component can irradiate one or more photodiode array components, and each photodiode array component is connected to one radio frequency signal output, so as to output one or more time-delayed signals; and for the photodiode array component, the modulated light output by the light emitting component can irradiate one or more photodiodes, and the one or more photodiodes output a time-delayed signal to the radio frequency signal output after being irradiated by light.

[0160] Each light emitting component corresponds to one radio frequency signal input end, and the light emitting units in the light emitting component output modulated light signals according to the radio frequency signals received by the corresponding radio frequency signal input end. The light emitted by the light emitting component irradiates one or more photodiode array components, so that one or more delay signals can be output. The delay network includes a plurality of light emitting components, and the light emitted by each light emitting component irradiates one or more photodiode array components, so that one or more delay signals can be output.

[0161] For a delay network including M light emitting components and N photodiode array components, the N radio frequency signal output ends can output at most NXM delay signals, wherein each radio frequency signal output end can output a plurality of delay signals.

[0162] In a possible implementation, in combination with FIG. 17, the light emitting component includes a power divider and a plurality of light emitting units, the power divider is configured to distribute the received radio frequency signals to each light emitting unit, and the light emitted by the plurality of light emitting units is adjusted in angle by the optical path adjustment component to irradiate a target photodiode in the target photodiode array component.

[0163] For example, the number of light emitting units can be the same as the number of photodiode array components, so that the light emitted by each light emitting unit can correspond to irradiate a target photodiode component, and the radio frequency signal received by one radio frequency signal input end is processed by the target photodiode component corresponding to the radio frequency signal output end.

[0164] In a possible implementation, in combination with FIG. 18, the light emitting component includes a plurality of light emitting units connected in series, and the light emitted by the plurality of light emitting units is adjusted in angle by the optical path adjustment component to irradiate a target photodiode in the target photodiode array component. The series connection of the plurality of light emitting units can eliminate the need to set a power divider, thereby simplifying the light source structure.

[0165] For example, the number of light emitting units can be the same as the number of photodiode array components, so that the light emitted by each light emitting unit can correspond to irradiate a target photodiode component, and the radio frequency signal received by one radio frequency signal input end is processed by the target photodiode component corresponding to the radio frequency signal output end.

[0166] In a possible implementation, in combination with FIG. 19, the light emitting component includes a light emitting unit and a beam splitter, and the beam splitter is configured to split the light emitted by the light emitting unit. The light split by the beam splitter is adjusted in angle by the optical path adjustment component to irradiate a target photodiode in the target photodiode array component. The scheme of splitting the light emitted by the light emitting unit by the beam splitter also eliminates the need to set a power divider, thereby simplifying the light source structure.

[0167] Exemplarily, the number of light beams split by the beam splitter can be the same as the number of the photodiode array assembly, so that each light beam can correspond to irradiate a target photodiode assembly, and the radio frequency signal received by the radio frequency signal input end is output through the radio frequency signal output end of the target photodiode assembly after delay processing.

[0168] The above optical path adjusting assembly can include a galvanometer set. Referring to FIG. 20, which shows a structural schematic diagram of a delay network, specifically, a galvanometer corresponding to each light emitting unit can reflect the light emitted by the light emitting unit to irradiate a target photodiode in the target photodiode array assembly.

[0169] Alternatively, a galvanometer corresponding to each beam splitter or light beam can reflect the light emitted by the light emitting unit to irradiate a target photodiode in the target photodiode array assembly.

[0170] For the photodiodes in the photodiode array assembly, a large field of view half-sphere lens can be correspondingly arranged to improve the light collection efficiency of the photodiodes.

[0171] The foregoing embodiments have mentioned that the number of photodiodes in the photodiode assembly affects the range of delay adjustment. In a possible implementation, in order to expand the range of delay adjustment, the number of photodiodes in the photodiode array assembly can be expanded by a multiple, for example, referring to the delay network shown in FIG. 21, the number of photodiodes in the expanded photodiode array assembly is three times the number of photodiodes in the unexpanded photodiode array assembly, so that the delay adjustment can also be correspondingly increased.

[0172] The embodiments of the present application also provide a radio frequency transceiver device, which includes a transmitting channel and a receiving channel, and the transmitting channel and / or the receiving channel is provided with a delay network; the delay network includes a plurality of radio frequency signal input ends, a delay device and a plurality of radio frequency signal output ends, the signal received by a first input end among the plurality of input ends is processed by the delay device and then output through at least one output among the plurality of output ends, and the delay of the delayed signals output by different output ends is the same or different.

[0173] Exemplarily, the delay network can be the delay network shown in FIGS. 16-21.

[0174] In a possible implementation, one delay network can be arranged in the transmitting channel or the receiving channel. It should be noted that the radio frequency transceiver device can be provided with the delay network in the transmitting channel, or provided with the delay network in the receiving channel, or provided with the delay network in both the transmitting channel and the receiving channel.

[0175] For example, referring to FIG. 22, taking a transmitting channel as an example, the transmitting channel is used to process a plurality of to-be-transmitted signals, such as a first to-be-transmitted signal and a second to-be-transmitted signal, and the transmitting channel includes a delay network and a plurality of radio frequency amplifiers; the first to-be-transmitted signal in the plurality of to-be-transmitted signals is processed by the delay network in the transmitting channel to output a plurality of delay signals, and the plurality of delay signals are respectively amplified by the radio frequency amplifiers.

[0176] Taking the first to-be-transmitted signal as an example, the first to-be-transmitted signal sequentially passes through an intermediate frequency amplifier and a mixer and is then processed by the delay network, and the delay network can perform delay processing on the first to-be-transmitted signal to output a plurality of delayed signals, for example, three delayed signals, wherein the first delayed signal passes through a radio frequency amplifier PA1 and is then transmitted by an antenna; the second delayed signal passes through a radio frequency amplifier PA2 and is then transmitted by the antenna; and the third delayed signal passes through a radio frequency amplifier PA3 and is then transmitted by the antenna.

[0177] For the receiving channel, the receiving channel is used to process a plurality of signals received by an antenna; the receiving channel includes a delay network and a plurality of low-noise amplifiers; the plurality of signals received by the antenna are respectively amplified by the plurality of low-noise amplifiers, and a first signal in the plurality of signals received by the antenna sequentially passes through a low-noise amplifier and the delay network; the delay network in the receiving channel processes the first signal to output a plurality of delay signals, and the plurality of delay signals are respectively processed by a mixer and an intermediate frequency amplifier for subsequent processing.

[0178] In the above example, the network is arranged between the mixer and the antenna, and in some other possible implementation manners, the network can also be arranged between the mixer and the intermediate frequency amplifier.

[0179] Referring to FIG. 23, a plurality of delay networks can also be arranged in the transmitting channel or the receiving channel, taking the transmitting channel as an example, the transmitting channel includes a first delay network and a second delay network, wherein the first delay network is arranged between the intermediate frequency amplifier and the mixer; and the second delay network is arranged between the mixer and the radio frequency amplifier.

[0180] For the receiving channel, the receiving channel includes the first delay network and the second delay network, wherein the first delay network is arranged between the mixer and the intermediate frequency amplifier, and the second delay network is arranged between the low-noise amplifier and the mixer.

[0181] Similarly, in the embodiments of the present application, the delay adjustment range of the delay network working at a low frequency is larger, and the adjustment precision can be lower, the delay adjustment range of the delay network working at a high frequency is smaller, and the adjustment precision is higher; for example, in the transmitting channel and the receiving channel, the delay adjustment step of the first delay network is greater than the delay adjustment step of the second delay network,

[0182] The principle of the delay network has been described in detail in the foregoing embodiments, and will not be repeated here.

[0183] In a possible implementation, the delay device provided in the examples shown in FIGS. 5-10 and the delay network provided in the examples shown in FIGS. 16-21 can be combined.

[0184] For example, referring to FIG. 24, taking the transmitting channel of the radio frequency transceiver device as an example, the delay device provided in the foregoing embodiments shown in FIGS. 5-10 can be arranged before mixing, and the delay network provided in the foregoing embodiments shown in FIGS. 16-21 can be arranged after mixing.

[0185] Alternatively, the delay network provided in the foregoing embodiments shown in FIGS. 16-21 can be arranged before mixing, and the delay device provided in the foregoing embodiments shown in FIGS. 5-10 can be arranged after mixing.

[0186] Alternatively, the delay device provided in the foregoing examples shown in FIGS. 5-10 can be arranged in the mixing link, and the delay device can be used to output the delayed local oscillator signal to the mixer.

[0187] In the delay device and the delay network provided in the foregoing embodiments, the light emitting component, the photodiode array component and the like can be integrally arranged, for example, in the same active antenna unit (AAU) device, or can be arranged in multiple separate devices.

[0188] In the foregoing examples, the delay device or the delay network arranged in the radio frequency transceiver device is introduced taking the radio frequency transceiver device as an example, the radio frequency transceiver device includes a transmitting channel and a receiving channel, and the embodiments of the present application further provide a radio frequency receiving device, the radio frequency receiving device only includes a receiving channel, and the receiving channel can be provided with the delay device or the delay network provided in the foregoing embodiments. The embodiments of the present application further provide a radio frequency transmitting device, the radio frequency transmitting device only includes a transmitting channel, and the transmitting channel can be provided with the delay device or the delay network provided in the foregoing embodiments.

[0189] The embodiments of the present application further provide a communication device, for example, the communication device can be a network device, a terminal device and the like communication device shown in FIGS. 1 and 2, the communication device includes a delay device and an antenna, the antenna is used to transmit the signal processed by the delay device, or the delay device is used to process the signal received by the antenna; the delay device can be the delay device shown in FIGS. 5-10 or the delay network shown in FIGS. 16-21.

[0190] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A delay device, characterized by The application relates to a radio frequency signal delay device. The radio frequency signal delay device comprises a radio frequency signal input end, a light-emitting component, a photodiode array component and a radio frequency signal output end. The light-emitting component comprises one or more light-emitting units, and the light-emitting units are used for outputting modulated light signals according to the radio frequency signals received by the radio frequency signal input end. The photodiode array component comprises impedance devices, n photodiodes and n+1 inductive circuits, n is an integer greater than 1, and the n photodiodes are cascaded, wherein the first electrode of the first-stage photodiode is coupled with the radio frequency signal output end through one of the inductive circuits, one of the inductive circuits is arranged between the first electrodes of any two adjacent-stage photodiodes, the first electrode of the n-stage photodiode is further grounded through one of the inductive circuits and the impedance devices, and the second electrode of each-stage photodiode is grounded. The photodiodes output electric signals to the radio frequency signal output end after being irradiated by the light emitted by the light-emitting units, and the electric signals output by the photodiodes of different stages have different time delays.

2. The delay device of claim 1, wherein, The light-emitting component comprises a plurality of light-emitting units, and a target light-emitting unit in the plurality of light-emitting units is used for outputting a modulated light signal to irradiate a target photodiode in the photodiode array component. The target light-emitting unit comprises one or more light-emitting units. The target photodiode comprises one or more photodiodes.

3. The delay device of claim 2, wherein, The delay device further comprises a switch array arranged between the radio frequency signal input end and the plurality of light-emitting units, and the switch array is used for selecting to turn on the radio frequency signal input end and the target light-emitting unit in the plurality of light-emitting units according to a control signal.

4. The delay device of claim 1, wherein, The light-emitting component comprises one light-emitting unit. The delay device further comprises a light path adjusting component, and the light path adjusting component comprises at least one reflector which is used for adjusting the light-emitting direction of the light-emitting unit so that the light emitted by the light-emitting unit irradiates a target photodiode in the photodiode array component.

5. The delay device of claim 4, wherein, The light path adjusting component comprises a first reflector and a second reflector. The first reflector is used for reflecting the light emitted by the light-emitting unit to the second reflector. The second reflector moves positions to reflect the light emitted by the light-emitting unit to the target photodiode.

6. The delay device of claim 5, wherein, The plurality of photodiodes comprises a first photodiode and a second photodiode, and the light emitted by the light-emitting unit has the same light path length to the first photodiode and to the second photodiode through the first reflector and the second reflector.

7. The delay device of claim 6, wherein, The plurality of photodiodes are arranged in a circular arc shape. The light path adjusting component comprises a first reflector and a second reflector, the first reflector rotates to adjust the emitting direction of the light emitted by the light-emitting unit to different positions of the second reflector, and the second reflector is used for reflecting the light emitted by the light-emitting unit to the target photodiode.

8. The delay device of claim 7, wherein, The rotation axis of the first reflector is located at the center of the circular arc formed by the arrangement of the photodiodes.

9. The time delay device according to any one of claims 1 to 8, characterized in that The light-emitting unit comprises a light-emitting device and a collimating lens. The light-emitting device is used for outputting modulated light signals according to the radio frequency signals. The collimating lens is used for collimating the light emitted by the light emitting device.

10. The time delay device according to any one of claims 1 to 8, characterized in that The light emitting unit comprises a plurality of light emitting devices and a plurality of collimating lenses, the collimating lenses correspond to the light emitting devices one by one. The plurality of light emitting devices are connected in series, and the collimating lenses are used for collimating the light emitted by the light emitting devices. The light emitted by the plurality of light emitting devices irradiates to the same photodiode.

11. The time delay device according to any one of claims 1 to 10, characterized in that The photodiode array assembly further comprises a plurality of light collecting lenses, and each photodiode is provided with a light collecting lens.

12. A radio frequency transceiver apparatus, characterized by The radio frequency link comprises a transmitting channel and a receiving channel. The transmitting channel and / or the receiving channel is provided with the delay device as claimed in any one of claims 1-11.

13. The radio frequency transceiver device of claim 12, wherein, The transmitting channel is used for processing a signal to be transmitted, and the transmitting channel comprises an intermediate frequency amplifier, a mixer, the delay device and a radio frequency amplifier; the signal to be transmitted passes through the intermediate frequency amplifier, the mixer, the delay device and the radio frequency amplifier in sequence.

14. The radio frequency transceiver device of claim 12, wherein, The transmitting channel is used for processing a signal to be transmitted, and the transmitting channel comprises an intermediate frequency amplifier, the delay device, a mixer and a radio frequency amplifier; the signal to be transmitted passes through the intermediate frequency amplifier, the delay device, the mixer and the radio frequency amplifier in sequence.

15. The radio frequency transceiver device of claim 12, wherein, The transmitting channel comprises a mixer and the delay device, and the delay device is used for outputting a delayed local oscillator signal to the mixer.

16. The radio frequency transceiver device of any one of claims 12 to 15, wherein, The receiving channel is used for processing a signal received by an antenna, and the receiving channel comprises a low noise amplifier, the delay device, a mixer and an intermediate frequency amplifier; the signal received by the antenna passes through the low noise amplifier, the delay device, the mixer and the intermediate frequency amplifier in sequence.

17. The radio frequency transceiver device of any one of claims 12 to 15, wherein, The receiving channel is used for processing a signal received by an antenna, and the receiving channel comprises a low noise amplifier, a mixer, the delay device and an intermediate frequency amplifier; the signal received by the antenna passes through the low noise amplifier, the mixer, the delay device and the intermediate frequency amplifier in sequence.

18. The radio frequency transceiver device of any one of claims 12-15, wherein, The receiving channel comprises a mixer and the delay device, and the delay device is used for outputting a delayed local oscillator signal to the mixer.

19. A radio frequency transceiver apparatus, characterized by The radio frequency link comprises a transmitting channel and a receiving channel. The transmitting channel and / or the receiving channel is provided with a plurality of delay devices as claimed in any one of claims 1-11.

20. The radio frequency transceiver device of claim 19, wherein, The transmitting channel is used for processing a signal to be transmitted, and the transmitting channel comprises a first intermediate frequency amplifier, a first delay device, a second intermediate frequency amplifier, a mixer, a second delay device and a radio frequency amplifier; The signal to be transmitted passes through the first intermediate frequency amplifier, the first delay device, the second intermediate frequency amplifier, the mixer, the second delay device and the radio frequency amplifier in sequence; The first delay device and the second delay device are the delay device as claimed in any one of claims 1-11.

21. The radio frequency transceiver device of claim 19, wherein, The receiving channel is used for processing a signal received by an antenna, and the receiving channel comprises a low noise amplifier, a second delay device, a mixer, a second intermediate frequency amplifier, a first delay device and a first intermediate frequency amplifier; The signal received by the antenna passes through the low noise amplifier, the second delay device, the mixer, the second intermediate frequency amplifier, the first delay device and the first intermediate frequency amplifier in turn; The first delay device and the second delay device are the delay device according to any one of claims 1-11.

22. The radio frequency transceiver device of claim 20 or 21, wherein, The delay adjustment step of the first delay device is greater than the delay adjustment step of the second delay device, and the delay adjustment step is the difference between the delays of the electrical signals output by two adjacent levels of the photodiodes.

23. The radio frequency transceiver device of claim 20 or 21, wherein, The delay adjustment step of the first delay device is less than or equal to the total delay adjustment amount of the second delay device, and the total delay adjustment amount is the difference between the delay of the electrical signal output by the first level of the photodiode and the delay of the electrical signal output by the nth level of the photodiode.

24. A time delay network characterized by, Comprising: M radio frequency signal input terminals and M light emitting components; An optical path adjusting component; N photodiode array components and N radio frequency signal output terminals, M and N are positive integers greater than 1; The light emitting component corresponds to the radio frequency signal input terminal one by one, and the light emitting component is used to output a modulated light signal according to the radio frequency signal received by the radio frequency signal input terminal corresponding to the light emitting component; The photodiode array component corresponds to the radio frequency signal output terminal one by one, and the photodiode array component comprises an impedance device, n photodiodes and n+1 inductance circuits, n is an integer greater than 1, the n photodiodes are cascaded, wherein the first electrode of the first level photodiode is coupled with the radio frequency signal output terminal through one of the inductance circuits, one of the inductance circuits is arranged between the first electrodes of any two adjacent levels of photodiodes, the first electrode of the nth level photodiode is further coupled with the ground through one of the inductance circuits and the impedance device, the second electrode of each level of photodiode is grounded, the photodiode outputs an electrical signal to the radio frequency signal output terminal after being irradiated by light, and the electrical signals output by the photodiodes of different levels have different delays; The light emitted by the light emitting component is adjusted in angle by the optical path adjusting component to irradiate a target photodiode in a target photodiode array component, wherein the target photodiode array component comprises at least one photodiode array component, and the target photodiode comprises at least one photodiode.

25. The delay network of claim 24, wherein, The light emitting component comprises a power divider and a plurality of light emitting units, and the power divider is used to distribute the received radio frequency signal to each light emitting unit; The light emitted by the plurality of light emitting units is adjusted in angle by the optical path adjusting component to irradiate a target photodiode in a target photodiode array component.

26. The delay network of claim 24, wherein, The light emitting component comprises a plurality of light emitting units connected in series, and the light emitted by the plurality of light emitting units is adjusted in angle by the optical path adjusting component to irradiate a target photodiode in a target photodiode array component.

27. The delay network of claim 24, wherein, The light emitting component comprises a light emitting unit and a beam splitter, and the beam splitter is used to split the light emitted by the light emitting unit; The light obtained by splitting the beam splitter is adjusted in angle by the optical path adjusting component to irradiate a target photodiode in a target photodiode array component.

28. A radio frequency transceiver apparatus, characterized by The communication device comprises a transmitting channel and a receiving channel, the transmitting channel and / or the receiving channel is provided with a delay network; The delay network comprises a plurality of radio frequency signal input ends, a delay device and a plurality of radio frequency signal output ends, a signal received by a first input end among the plurality of input ends is processed by the delay device and then outputted through at least one output end among the plurality of output ends as a delayed signal, the delayed signals outputted by different output ends have the same or different delays.

29. The radio frequency transceiver device of claim 28, wherein, The delay network is as claimed in any one of claims 24-27.

30. The radio-frequency transceiver device of claim 29, wherein, The transmitting channel is used for processing a plurality of to-be-transmitted signals. The transmitting channel comprises a delay network and a plurality of radio frequency amplifiers. A first to-be-transmitted signal among the plurality of to-be-transmitted signals is processed by the delay network and then outputted as a plurality of delayed signals, and the plurality of delayed signals are respectively amplified by the radio frequency amplifiers.

31. The radio frequency transceiver device of claim 29 or 30, wherein, The receiving channel is used for processing a plurality of signals received by an antenna. The receiving channel comprises a delay network and a plurality of low-noise amplifiers. The plurality of signals received by the antenna are respectively amplified by the plurality of low-noise amplifiers, and a first signal among the plurality of signals received by the antenna sequentially passes through the low-noise amplifiers and the delay network. The delay network processes the first signal and then outputs a plurality of delayed signals.

32. A communications device, characterized by The communication device comprises a delay device and an antenna, the antenna is used for transmitting a signal processed by the delay device, or the delay device is used for processing a signal received by the antenna. The delay device is as claimed in any one of claims 1-11 or the delay network is as claimed in any one of claims 24-27.

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