110-400GHz broadband frequency multiplier implementation system and method

Abstract

The invention relates to a system and a method for realizing a 110-400GHz broadband frequency multiplier. The system comprises a first frequency multiplier, a second frequency multiplier, a third frequency multiplier and a frequency synthesis system, the frequency synthesis system includes a first reflective lens, a first frequency selective surface, a second reflective lens, a second frequency selective surface, and a third reflective lens. According to the ultra-wideband frequency multiplier, the problem that a traditional frequency multiplier cannot realize ultra-wideband frequency multiplication due to transmission limitation is solved, and a reference scheme is provided for solving the problem of combination of large-bandwidth electromagnetic wave transmission.

Description

Technical Field

[0001] The present invention relates to the technical field of millimeter wave communication equipment and accessories used therein, and in particular to a system and method for realizing a 110 to 400 GHz broadband frequency multiplier. Background Art

[0002] Terahertz (THz) waves are usually defined as electromagnetic waves with a frequency of 0.1THz-10 THz (wavelength of 3mm-30μm). In the electromagnetic spectrum, its spectrum is between infrared electromagnetic waves and microwave spectrum. Due to its special frequency position, THz waves are the transition zone from electronics to photonics, and also the transition zone from macroscopic classical theory to microscopic quantum theory. THz waves occupy a very special position in the electromagnetic spectrum, with the characteristics of high frequency, low radiation energy, high spatial resolution, and good safety. They have excellent performance and great development potential in the fields of communications, national defense security, biomedicine, etc. Due to the high frequency of THz waves, in order to obtain a stable and reliable signal source, it is often necessary to obtain THz waves by frequency doubling, and this process is usually achieved through a frequency multiplier.

[0003] A frequency multiplier is a device used to double the frequency of an input signal. It mainly uses the characteristics of nonlinear elements to pass the input signal through the nonlinear elements so that the output signal contains multiples of the input frequency. Frequency multipliers are widely used in electronic circuits in microwave, millimeter wave and THz frequency bands. In the high-frequency band, the output port of the frequency multiplier is usually a rectangular waveguide, but the rectangular waveguide has a specific set of cutoff frequencies, which determine the lowest frequency that can be supported in a given rectangular waveguide. In a rectangular waveguide, the propagation of electromagnetic waves is affected by the geometry and size of the waveguide, resulting in electromagnetic waves with frequencies lower than the cutoff frequency being unable to propagate in the waveguide, forming the so-called waveguide low-pass characteristic.

[0004] In view of the above-mentioned defects, the designers have actively carried out research and innovation in order to create a 110 to 400 GHz broadband frequency multiplier implementation system and method to make it more valuable for industrial use. Summary of the invention

[0005] In order to solve the above technical problems, the object of the present invention is to provide a 110 to 400 GHz broadband frequency multiplier implementation system and method.

[0006] To achieve the above object, the present invention adopts the following technical solution:

[0007] One of the purposes of the present invention:

[0008] A 110 to 400 GHz broadband frequency multiplier implementation system, comprising a first frequency multiplier, a second frequency multiplier, a third frequency multiplier and a frequency synthesis system;

[0009] The frequency synthesis system includes a first reflecting lens, a first frequency selective surface, a second reflecting lens, a second frequency selective surface and a third reflecting lens;

[0010] The first frequency doubler, the second frequency doubler and the third frequency doubler are arranged in sequence from left to right, the first reflecting lens, the second reflecting lens and the third reflecting lens are arranged in sequence from left to right, the first frequency doubler and the first reflecting lens are arranged in sequence from top to bottom, the second frequency doubler, the first frequency selective surface and the second reflecting lens are arranged in sequence from top to bottom, the third frequency doubler, the second frequency selective surface and the third reflecting lens are arranged in sequence from top to bottom, and a circular waveguide is arranged on the right side of the third reflecting lens.

[0011] As a further improvement of the present invention, a first horn antenna is installed at the bottom of the first frequency multiplier, a second horn antenna is installed at the bottom of the second frequency multiplier, and a third horn antenna is installed at the bottom of the third frequency multiplier.

[0012] As a further improvement of the present invention, the frequencies of the first frequency multiplier, the second frequency multiplier and the third frequency multiplier are 110-170 GHz, 170-260 GHz and 260-400 GHz respectively; the operating frequency ranges of the first horn antenna, the second horn antenna and the third horn antenna are 110-170 GHz, 170-260 GHz and 260-400 GHz respectively.

[0013] As a further improvement of the present invention, the first frequency multiplier, the second frequency multiplier and the third frequency multiplier are all triple frequency multipliers.

[0014] As a further improvement of the present invention, the passband frequency range of the first frequency selective surface is 170-260 GHz, and the allowed incident angle is 10-45 degrees; the passband frequency range of the second frequency selective surface is 260-400 GHz, and the allowed incident angle is 10-45 degrees.

[0015] The second purpose of the present invention is:

[0016] A method for implementing a 110 to 400 GHz broadband frequency multiplier comprises the following steps in sequence:

[0017] Step 1: The first frequency multiplier transmits the signal:

[0018] The 110-170 GHz signal emitted in the first frequency multiplier is directly incident on the first reflecting lens, and the incident angle is 22.5-45 degrees; the first reflecting lens reflects the 110-170 GHz signal to the first frequency selective surface, and the angle between the signal and the normal line of the first frequency selective surface is 22.5-45 degrees; the first frequency selective surface reflects the 110-170 GHz signal to the second reflecting lens, and the angle between the signal and the normal line of the second reflecting lens is 22.5-45 degrees; the second reflecting lens reflects the 110-170 GHz signal to the second frequency selective surface, and the angle between the signal and the normal line of the second frequency selective surface is 22.5-45 degrees; the second frequency selective surface reflects the 110-170 GHz signal to the third reflecting lens, and the angle between the reflected signal and the normal line of the third reflecting lens is 45 degrees, and then coupled from the third reflecting lens into the circular waveguide at a reflection angle of 45 degrees;

[0019] Step 2: The second frequency multiplier transmits the signal:

[0020] The 170-260 GHz signal emitted in the second frequency doubler is directly incident on the first frequency selective surface, and the incident angle thereof is 22.5-45 degrees; the 170-260 GHz signal emitted in the second frequency doubler is incident on the second reflecting lens after passing through the first frequency selective surface, and the incident angle thereof is 22.5-45 degrees; the second reflecting lens reflects the 170-260 GHz signal to the second frequency selective surface, and the angle between the signal and the normal line of the second frequency selective surface is 22.5-45 degrees; the second frequency selective surface reflects the 170-260 GHz signal to the third reflecting lens, and the angle between the reflected signal and the normal line of the third reflecting lens is 45 degrees, and then the reflected signal is coupled into the circular waveguide from the third reflecting lens at a reflection angle of 45 degrees;

[0021] Step 3: The third frequency multiplier transmits the signal:

[0022] The 260-400 GHz signal emitted in the third frequency doubler is directly incident on the second frequency selective surface, and its incident angle is 22.5-45 degrees; the 260-400 GHz signal emitted in the third frequency doubler is incident on the third reflecting lens through the second frequency selective surface, and its reflected signal is incident on the third reflecting lens at an angle of 45 degrees with the normal line of the third reflecting lens, and then coupled into the circular waveguide from the third reflecting lens at a reflection angle of 45 degrees;

[0023] Step 4: 110-400 GHz broadband signal can be output through the circular waveguide.

[0024] As a further improvement of the present invention, in step 1, the 110-170 GHz signal emitted in the first frequency multiplier is directly incident on the first reflecting lens, and its incident angle is 22.5 degrees; the first reflecting lens reflects the 110-170 GHz signal to the first frequency selective surface, and the angle between the signal and the normal of the first frequency selective surface is 22.5 degrees; the first frequency selective surface reflects the 110-170 GHz signal to the second reflecting lens, and the angle between the signal and the normal of the second reflecting lens is 22.5 degrees; the second reflecting lens reflects the 110-170 GHz signal to the second frequency selective surface, and the angle between the signal and the normal of the second frequency selective surface is 22.5 degrees; the second frequency selective surface reflects the 110-170 GHz signal to the third reflecting lens, and the angle between the reflected signal and the normal of the third reflecting lens is 45 degrees, and then coupled from the third reflecting lens into the circular waveguide at a reflection angle of 45 degrees;

[0025] Step 2, the 170-260 GHz signal emitted in the second frequency doubler is directly incident on the first frequency selective surface, and its incident angle is 22.5 degrees; the 170-260 GHz signal emitted in the second frequency doubler is incident on the second reflecting lens after passing through the first frequency selective surface, and its incident angle is 22.5 degrees; the second reflecting lens reflects the 170-260 GHz signal to the second frequency selective surface, and the angle between the signal and the normal of the second frequency selective surface is 22.5 degrees; the second frequency selective surface reflects the 170-260 GHz signal to the third reflecting lens, and the angle between the reflected signal and the normal of the third reflecting lens is 45 degrees, and then coupled from the third reflecting lens into the circular waveguide at a reflection angle of 45 degrees;

[0026] Step 3, the 260-400 GHz signal emitted in the third frequency doubler is directly incident on the second frequency selective surface, and its incident angle is 22.5 degrees; the 260-400 GHz signal emitted in the third frequency doubler is incident on the third reflecting lens through the second frequency selective surface, and its reflected signal is at an angle of 45 degrees with the normal of the third reflecting lens, and then coupled into the circular waveguide from the third reflecting lens at a reflection angle of 45 degrees;

[0027] Step 4: 110-400 GHz broadband signal can be output through the circular waveguide.

[0028] As a further improvement of the present invention, in step 1, the 110-170 GHz signal emitted in the first frequency multiplier is directly incident on the first reflecting lens, and its incident angle is 45 degrees; the first reflecting lens reflects the 110-170 GHz signal to the first frequency selective surface, and the angle between the signal and the normal of the first frequency selective surface is 45 degrees; the first frequency selective surface reflects the 110-170 GHz signal to the second reflecting lens, and the angle between the signal and the normal of the second reflecting lens is 45 degrees; the second reflecting lens reflects the 110-170 GHz signal to the second frequency selective surface, and the angle between the signal and the normal of the second frequency selective surface is 45 degrees; the second frequency selective surface reflects the 110-170 GHz signal to the third reflecting lens, and the angle between the reflected signal and the normal of the third reflecting lens is 45 degrees, and then coupled from the third reflecting lens into the circular waveguide at a reflection angle of 45 degrees;

[0029] Step 2, the 170-260 GHz signal emitted in the second frequency doubler is directly incident on the first frequency selective surface, and its incident angle is 45 degrees; the 170-260 GHz signal emitted in the second frequency doubler is incident on the second reflecting lens after passing through the first frequency selective surface, and its incident angle is 45 degrees; the second reflecting lens reflects the 170-260 GHz signal to the second frequency selective surface, and the angle between the signal and the normal of the second frequency selective surface is 45 degrees; the second frequency selective surface reflects the 170-260 GHz signal to the third reflecting lens, and the angle between the reflected signal and the normal of the third reflecting lens is 45 degrees, and then coupled from the third reflecting lens into the circular waveguide at a reflection angle of 45 degrees;

[0030] Step 3, the 260-400 GHz signal emitted in the third frequency doubler is directly incident on the second frequency selective surface, and its incident angle is 45 degrees; the 260-400 GHz signal emitted in the third frequency doubler is incident on the third reflecting lens through the second frequency selective surface, and its reflected signal is at an angle of 45 degrees with the normal of the third reflecting lens, and then coupled into the circular waveguide from the third reflecting lens at a reflection angle of 45 degrees;

[0031] Step 4: 110-400 GHz broadband signal can be output through the circular waveguide.

[0032] By means of the above scheme, the present invention has at least the following advantages:

[0033] The present invention realizes the function of ultra-wideband frequency multiplication which cannot be realized by traditional frequency multipliers due to transmission limitations, and provides a reference solution for solving the combining problem of large-bandwidth electromagnetic wave transmission.

[0034] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 It is a structural schematic diagram of a 110 to 400 GHz broadband frequency multiplier implementation system of the present invention.

[0037] Figure 2 It is a flow chart of a method for realizing a 110 to 400 GHz broadband frequency multiplier of the present invention.

[0038] The meanings of the various reference numerals in the figures are as follows.

[0039] A first frequency doubler 1, a first horn antenna 2, a first reflecting lens 3, a second frequency doubler 4, a second horn antenna 5, a first frequency selective surface 6, a second reflecting lens 7, a third frequency doubler 8, a third horn antenna 9, a second frequency selective surface 10, a third reflecting lens 11, and a circular waveguide 12. DETAILED DESCRIPTION

[0040] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0041] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, rather than all the embodiments. The components of the embodiment of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiment of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0042] Example

[0043] like Figure 1-2 As shown,

[0044] One of the purposes of the present invention:

[0045] A 110 to 400 GHz broadband frequency multiplier implementation system, comprising a first frequency multiplier 1, a second frequency multiplier 4, a third frequency multiplier 8 and a frequency synthesis system;

[0046] The frequency synthesis system comprises a first reflecting lens 3, a first frequency selective surface 6, a second reflecting lens 7, a second frequency selective surface 10 and a third reflecting lens 11;

[0047] The first frequency doubler 1, the second frequency doubler 4 and the third frequency doubler 8 are arranged in sequence from left to right, the first reflecting lens 3, the second reflecting lens 7 and the third reflecting lens 11 are arranged in sequence from left to right, the first frequency doubler 1 and the first reflecting lens 3 are arranged in sequence from top to bottom, the second frequency doubler 4, the first frequency selective surface 6 and the second reflecting lens 7 are arranged in sequence from top to bottom, the third frequency doubler 8, the second frequency selective surface 10 and the third reflecting lens 11 are arranged in sequence from top to bottom, and a circular waveguide 12 is arranged on the right side of the third reflecting lens 11.

[0048] Preferably, a first horn antenna 2 is installed at the bottom of the first frequency multiplier 1 , a second horn antenna 5 is installed at the bottom of the second frequency multiplier 4 , and a third horn antenna 9 is installed at the bottom of the third frequency multiplier 8 .

[0049] Preferably, the frequencies of the first frequency multiplier 1, the second frequency multiplier 4 and the third frequency multiplier 8 are 110-170 GHz, 170-260 GHz and 260-400 GHz respectively; the operating frequency ranges of the first horn antenna 2, the second horn antenna 5 and the third horn antenna 9 are 110-170 GHz, 170-260 GHz and 260-400 GHz respectively.

[0050] Preferably, the first frequency multiplier 1, the second frequency multiplier 4 and the third frequency multiplier 8 are all frequency triplers.

[0051] Preferably, the passband frequency range of the first frequency selective surface 6 is 170-260 GHz, and the allowed incident angle is 10-45 degrees; the passband frequency range of the second frequency selective surface 10 is 260-400 GHz, and the allowed incident angle is 10-45 degrees.

[0052] The second purpose of the present invention is:

[0053] A method for implementing a 110 to 400 GHz broadband frequency multiplier comprises the following steps in sequence:

[0054] Step 1: The first frequency multiplier 1 transmits a signal:

[0055] The 110-170 GHz signal emitted in the first frequency multiplier 1 is directly incident on the first reflecting lens 3, and its incident angle is 22.5-45 degrees; the first reflecting lens 3 reflects the 110-170 GHz signal to the first frequency selective surface 6, and the angle between the signal and the normal of the first frequency selective surface 6 is 22.5-45 degrees; the first frequency selective surface 6 reflects the 110-170 GHz signal to the second reflecting lens 7, and the angle between the signal and the normal of the second reflecting lens 7 is 22.5-45 degrees; the second reflecting lens 7 reflects the 110-170 GHz signal to the second frequency selective surface 10, and the angle between the signal and the normal of the second frequency selective surface 10 is 22.5-45 degrees; the second frequency selective surface 10 reflects the 110-170 GHz signal to the third reflecting lens 11, and the angle between the reflected signal and the normal of the third reflecting lens 11 is 45 degrees, and then coupled from the third reflecting lens 11 into the circular waveguide 12 at a reflection angle of 45 degrees;

[0056] Step 2: The second frequency multiplier 4 transmits the signal:

[0057] The 170-260 GHz signal emitted in the second frequency multiplier 4 is directly incident on the first frequency selective surface 6, and its incident angle is 22.5-45 degrees; the 170-260 GHz signal emitted in the second frequency multiplier 4 is incident on the second reflecting lens 7 after passing through the first frequency selective surface 6, and its incident angle is 22.5-45 degrees; the second reflecting lens 7 reflects the 170-260 GHz signal to the second frequency selective surface 10, and the angle between the signal and the normal of the second frequency selective surface 10 is 22.5-45 degrees; the second frequency selective surface 10 reflects the 170-260 GHz signal to the third reflecting lens 11, and the angle between the reflected signal and the normal of the third reflecting lens 11 is 45 degrees, and then coupled from the third reflecting lens 11 into the circular waveguide 12 at a reflection angle of 45 degrees;

[0058] Step 3: The third frequency multiplier 8 transmits a signal:

[0059] The 260-400 GHz signal emitted in the third frequency multiplier 8 is directly incident on the second frequency selective surface 10, and its incident angle is 22.5-45 degrees; the 260-400 GHz signal emitted in the third frequency multiplier 8 is incident on the third reflecting lens 11 through the second frequency selective surface 10, and its reflected signal is at an angle of 45 degrees with the normal of the third reflecting lens 11, and then coupled from the third reflecting lens 11 into the circular waveguide 12 at a reflection angle of 45 degrees;

[0060] Step 4: A 110-400 GHz broadband signal can be output through the circular waveguide 12.

[0061] The first embodiment of the present invention:

[0062] A method for implementing a 110 to 400 GHz broadband frequency multiplier comprises the following steps in sequence:

[0063] Step 1, the 110-170 GHz signal emitted in the first frequency multiplier 1 is directly incident on the first reflecting lens 3, and its incident angle is 22.5 degrees; the first reflecting lens 3 reflects the 110-170 GHz signal to the first frequency selective surface 6, and the angle between the signal and the normal of the first frequency selective surface 6 is 22.5 degrees; the first frequency selective surface 6 reflects the 110-170 GHz signal to the second reflecting lens 7, and the angle between the signal and the normal of the second reflecting lens 7 is 22.5 degrees; the second reflecting lens 7 reflects the 110-170 GHz signal to the second frequency selective surface 10, and the angle between the signal and the normal of the second frequency selective surface 10 is 22.5 degrees; the second frequency selective surface 10 reflects the 110-170 GHz signal to the third reflecting lens 11, and the angle between the reflected signal and the normal of the third reflecting lens 11 is 45 degrees, and then coupled from the third reflecting lens 11 into the circular waveguide 12 at a reflection angle of 45 degrees;

[0064] Step 2, the 170-260 GHz signal emitted in the second frequency multiplier 4 is directly incident on the first frequency selective surface 6, and its incident angle is 22.5 degrees; the 170-260 GHz signal emitted in the second frequency multiplier 4 is incident on the second reflecting lens 7 after passing through the first frequency selective surface 6, and its incident angle is 22.5 degrees; the second reflecting lens 7 reflects the 170-260 GHz signal to the second frequency selective surface 10, and the angle between the signal and the normal of the second frequency selective surface 10 is 22.5 degrees; the second frequency selective surface 10 reflects the 170-260 GHz signal to the third reflecting lens 11, and the angle between the reflected signal and the normal of the third reflecting lens 11 is 45 degrees, and then coupled from the third reflecting lens 11 into the circular waveguide 12 at a reflection angle of 45 degrees;

[0065] Step 3, the 260-400 GHz signal emitted in the third frequency multiplier 8 is directly incident on the second frequency selective surface 10, and its incident angle is 22.5 degrees; the 260-400 GHz signal emitted in the third frequency multiplier 8 is incident on the third reflecting lens 11 through the second frequency selective surface 10, and its reflected signal is at an angle of 45 degrees with the normal of the third reflecting lens 11, and then coupled from the third reflecting lens 11 into the circular waveguide 12 at a reflection angle of 45 degrees;

[0066] Step 4: A 110-400 GHz broadband signal can be output through the circular waveguide 12.

[0067] The second embodiment of the present invention:

[0068] A method for implementing a 110 to 400 GHz broadband frequency multiplier comprises the following steps in sequence:

[0069] Step 1, the 110-170 GHz signal emitted in the first frequency multiplier 1 is directly incident on the first reflecting lens 3, and its incident angle is 45 degrees; the first reflecting lens 3 reflects the 110-170 GHz signal to the first frequency selective surface 6, and the angle between the signal and the normal of the first frequency selective surface 6 is 45 degrees; the first frequency selective surface 6 reflects the 110-170 GHz signal to the second reflecting lens 7, and the angle between the signal and the normal of the second reflecting lens 7 is 45 degrees; the second reflecting lens 7 reflects the 110-170 GHz signal to the second frequency selective surface 10, and the angle between the signal and the normal of the second frequency selective surface 10 is 45 degrees; the second frequency selective surface 10 reflects the 110-170 GHz signal to the third reflecting lens 11, and the angle between the reflected signal and the normal of the third reflecting lens 11 is 45 degrees, and then coupled from the third reflecting lens 11 into the circular waveguide 12 at a reflection angle of 45 degrees;

[0070] Step 2, the 170-260 GHz signal emitted in the second frequency multiplier 4 is directly incident on the first frequency selective surface 6, and its incident angle is 45 degrees; the 170-260 GHz signal emitted in the second frequency multiplier 4 is incident on the second reflecting lens 7 after passing through the first frequency selective surface 6, and its incident angle is 45 degrees; the second reflecting lens 7 reflects the 170-260 GHz signal to the second frequency selective surface 10, and the angle between the signal and the normal of the second frequency selective surface 10 is 45 degrees; the second frequency selective surface 10 reflects the 170-260 GHz signal to the third reflecting lens 11, and the angle between the reflected signal and the normal of the third reflecting lens 11 is 45 degrees, and then coupled from the third reflecting lens 11 into the circular waveguide 12 at a reflection angle of 45 degrees;

[0071] Step 3, the 260-400 GHz signal emitted in the third frequency multiplier 8 is directly incident on the second frequency selective surface 10, and its incident angle is 45 degrees; the 260-400 GHz signal emitted in the third frequency multiplier 8 is incident on the third reflecting lens 11 through the second frequency selective surface 10, and its reflected signal is at an angle of 45 degrees with the normal of the third reflecting lens 11, and then coupled from the third reflecting lens 11 into the circular waveguide 12 at a reflection angle of 45 degrees;

[0072] Step 4: A 110-400 GHz broadband signal can be output through the circular waveguide 12.

[0073] The frequency selective surface (FSS) is a structure used to control the propagation of electromagnetic waves, and is usually used in wireless communications, radar, antenna design, etc. FSS is a two-dimensional or three-dimensional periodic structure that can selectively pass or reflect electromagnetic waves in a specific frequency range through its special geometry and layout.

[0074] The present invention discloses a 110 to 400 GHz ultra-wideband frequency multiplier realization system and method, which is composed of three 100-170 GHz, 170-260 GHz, 260-400 GHz triplers, three horn antennas and a frequency synthesis system. Through the frequency synthesis system, 100-170 GHz, 170-260 GHz, 260-400 GHz are coupled into a circular waveguide for radio frequency output. The present invention overcomes the problem of difficulty in combining channels due to the existence of a cutoff frequency in a rectangular waveguide during ultra-wideband electromagnetic wave transmission, and realizes the function of traditional frequency multipliers being unable to perform ultra-wideband frequency multiplication due to transmission limitations.

[0075] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly referring to the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0076] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A 110 to 400 GHz broadband frequency multiplier implementation system, comprising a first frequency multiplier (1), a second frequency multiplier (4), a third frequency multiplier (8) and a frequency synthesis system; Features: The frequency synthesis system comprises a first reflecting lens (3), a first frequency selective surface (6), a second reflecting lens (7), a second frequency selective surface (10) and a third reflecting lens (11); The first frequency doubler (1), the second frequency doubler (4) and the third frequency doubler (8) are sequentially arranged from left to right; the first reflecting lens (3), the second reflecting lens (7) and the third reflecting lens (11) are sequentially arranged from left to right; the first frequency doubler (1) and the first reflecting lens (3) are sequentially arranged from top to bottom; the second frequency doubler (4), the first frequency selective surface (6) and the second reflecting lens (7) are sequentially arranged from top to bottom; the third frequency doubler (8), the second frequency selective surface (10) and the third reflecting lens (11) are sequentially arranged from top to bottom; and a circular waveguide (12) is arranged on the right side of the third reflecting lens (11).

2. A 110 to 400 GHz broadband frequency multiplier implementation system as claimed in claim 1, characterized in that: A first horn antenna (2) is installed at the bottom of the first frequency multiplier (1), a second horn antenna (5) is installed at the bottom of the second frequency multiplier (4), and a third horn antenna (9) is installed at the bottom of the third frequency multiplier (8).

3. A 110 to 400 GHz broadband frequency multiplier implementation system as claimed in claim 2, characterized in that: The frequencies of the first frequency multiplier (1), the second frequency multiplier (4) and the third frequency multiplier (8) are 110-170 GHz, 170-260 GHz and 260-400 GHz respectively; the operating frequency ranges of the first horn antenna (2), the second horn antenna (5) and the third horn antenna (9) are 110-170 GHz, 170-260 GHz and 260-400 GHz respectively.

4. A 110 to 400 GHz broadband frequency multiplier implementation system as claimed in claim 1, characterized in that: The first frequency multiplier (1), the second frequency multiplier (4) and the third frequency multiplier (8) are all triple frequency multipliers.

5. A 110 to 400 GHz broadband frequency multiplier implementation system as claimed in claim 1, characterized in that: The passband frequency range of the first frequency selective surface (6) is 170-260 GHz, and the allowed incident angle is 10-45 degrees; the passband frequency range of the second frequency selective surface (10) is 260-400 GHz, and the allowed incident angle is 10-45 degrees.

6. A method for realizing a 110 to 400 GHz broadband frequency multiplier as claimed in any one of claims 1 to 5, characterized in that: The following steps are included in sequence: Step 1: The first frequency multiplier (1) transmits a signal: The 110-170 GHz signal emitted in the first frequency multiplier (1) is directly incident on the first reflecting lens (3), and its incident angle is 22.5-45 degrees; the first reflecting lens (3) reflects the 110-170 GHz signal to the first frequency selective surface (6), and the angle between the signal and the normal of the first frequency selective surface (6) is 22.5-45 degrees; the first frequency selective surface (6) reflects the 110-170 GHz signal to the second reflecting lens (7), and the angle between the signal and the normal of the second reflecting lens (7) is 22.5-45 degrees. The angle is 22.5 to 45 degrees; the second reflecting lens (7) reflects the 110 to 170 GHz signal to the second frequency selective surface (10), and the angle between the signal and the normal of the second frequency selective surface (10) is 22.5 to 45 degrees; the second frequency selective surface (10) reflects the 110 to 170 GHz signal to the third reflecting lens (11), and the angle between the reflected signal and the normal of the third reflecting lens (11) is 45 degrees, and then coupled from the third reflecting lens (11) into the circular waveguide (12) at a reflection angle of 45 degrees; Step 2: The second frequency multiplier (4) transmits the signal: The 170-260 GHz signal emitted in the second frequency multiplier (4) is directly incident on the first frequency selective surface (6), and its incident angle is 22.5-45 degrees; the 170-260 GHz signal emitted in the second frequency multiplier (4) is incident on the second reflecting lens (7) after passing through the first frequency selective surface (6), and its incident angle is 22.5-45 degrees; the second reflecting lens (7) reflects the 170-260 GHz signal to the second frequency selective surface (10), and the angle between the signal and the normal of the second frequency selective surface (10) is 22.5-45 degrees; the second frequency selective surface (10) reflects the 170-260 GHz signal to the third reflecting lens (11), and the angle between the reflected signal and the normal of the third reflecting lens (11) is 45 degrees, and then coupled from the third reflecting lens (11) into the circular waveguide (12) at a reflection angle of 45 degrees; Step 3: The third frequency multiplier (8) transmits a signal: The 260-400 GHz signal emitted in the third frequency multiplier (8) is directly incident on the second frequency selective surface (10) at an incident angle of 22.5-45 degrees; the 260-400 GHz signal emitted in the third frequency multiplier (8) is incident on the third reflecting lens (11) through the second frequency selective surface (10), and the angle between the reflected signal and the normal of the third reflecting lens (11) is 45 degrees, and then coupled from the third reflecting lens (11) into the circular waveguide (12) at a reflection angle of 45 degrees; Step 4: A 110-400 GHz broadband signal can be output through the circular waveguide (12).

7. A method for implementing a 110 to 400 GHz broadband frequency multiplier as claimed in claim 6, characterized in that: Step 1: The 110-170 GHz signal emitted in the first frequency multiplier (1) is directly incident on the first reflecting lens (3), and its incident angle is 22.5 degrees; the first reflecting lens (3) reflects the 110-170 GHz signal to the first frequency selective surface (6), and the angle between the signal and the normal of the first frequency selective surface (6) is 22.5 degrees; the first frequency selective surface (6) reflects the 110-170 GHz signal to the second reflecting lens (7), and the angle between the signal and the normal of the second frequency selective surface (7) is 22.5 degrees. The normal angle is 22.5 degrees; the second reflecting lens (7) reflects the 110-170 GHz signal to the second frequency selective surface (10), and the angle between the signal and the normal of the second frequency selective surface (10) is 22.5 degrees; the second frequency selective surface (10) reflects the 110-170 GHz signal to the third reflecting lens (11), and the angle between the reflected signal and the normal of the third reflecting lens (11) is 45 degrees, and then coupled from the third reflecting lens (11) into the circular waveguide (12) at a reflection angle of 45 degrees; Step 2, the 170-260 GHz signal emitted in the second frequency multiplier (4) is directly incident on the first frequency selective surface (6), and its incident angle is 22.5 degrees; the 170-260 GHz signal emitted in the second frequency multiplier (4) is incident on the second reflecting lens (7) after passing through the first frequency selective surface (6), and its incident angle is 22.5 degrees; the second reflecting lens (7) reflects the 170-260 GHz signal to the second frequency selective surface (10), and the angle between the signal and the normal of the second frequency selective surface (10) is 22.5 degrees; the second frequency selective surface (10) reflects the 170-260 GHz signal to the third reflecting lens (11), and the angle between the reflected signal and the normal of the third reflecting lens (11) is 45 degrees, and then coupled from the third reflecting lens (11) into the circular waveguide (12) at a reflection angle of 45 degrees; Step 3, the 260-400 GHz signal emitted in the third frequency doubler (8) is directly incident on the second frequency selective surface (10), and its incident angle is 22.5 degrees; the 260-400 GHz signal emitted in the third frequency doubler (8) is incident on the third reflecting lens (11) through the second frequency selective surface (10), and its reflected signal and the normal of the third reflecting lens (11) are at an angle of 45 degrees, and then coupled from the third reflecting lens (11) into the circular waveguide (12) at a reflection angle of 45 degrees; Step 4: A 110-400 GHz broadband signal can be output through the circular waveguide (12).

8. A method for implementing a 110 to 400 GHz broadband frequency multiplier as claimed in claim 6, characterized in that: Step 1: The 110-170 GHz signal emitted in the first frequency multiplier (1) is directly incident on the first reflecting lens (3), and its incident angle is 45 degrees; the first reflecting lens (3) reflects the 110-170 GHz signal to the first frequency selective surface (6), and the angle between the signal and the normal of the first frequency selective surface (6) is 45 degrees; the first frequency selective surface (6) reflects the 110-170 GHz signal to the second reflecting lens (7), and the angle between the signal and the normal of the second frequency selective surface (7) is 45 degrees. The normal angle is 45 degrees; the second reflecting lens (7) reflects the 110-170 GHz signal to the second frequency selective surface (10), and the angle between the signal and the normal of the second frequency selective surface (10) is 45 degrees; the second frequency selective surface (10) reflects the 110-170 GHz signal to the third reflecting lens (11), and the angle between the reflected signal and the normal of the third reflecting lens (11) is 45 degrees, and then coupled from the third reflecting lens (11) into the circular waveguide (12) at a reflection angle of 45 degrees; Step 2, the 170-260 GHz signal emitted in the second frequency multiplier (4) is directly incident on the first frequency selective surface (6), and its incident angle is 45 degrees; the 170-260 GHz signal emitted in the second frequency multiplier (4) is incident on the second reflecting lens (7) after passing through the first frequency selective surface (6), and its incident angle is 45 degrees; the second reflecting lens (7) reflects the 170-260 GHz signal to the second frequency selective surface (10), and the angle between the signal and the normal of the second frequency selective surface (10) is 45 degrees; the second frequency selective surface (10) reflects the 170-260 GHz signal to the third reflecting lens (11), and the angle between the reflected signal and the normal of the third reflecting lens (11) is 45 degrees, and then coupled from the third reflecting lens (11) into the circular waveguide (12) at a reflection angle of 45 degrees; Step 3, the 260-400 GHz signal emitted in the third frequency doubler (8) is directly incident on the second frequency selective surface (10), and its incident angle is 45 degrees; the 260-400 GHz signal emitted in the third frequency doubler (8) is incident on the third reflecting lens (11) through the second frequency selective surface (10), and its reflected signal and the normal of the third reflecting lens (11) are at an angle of 45 degrees, and then coupled from the third reflecting lens (11) into the circular waveguide (12) at a reflection angle of 45 degrees; Step 4: A 110-400 GHz broadband signal can be output through the circular waveguide (12).

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