A 31.6ghz-38.8ghz broadband 400ns fast 10mhz small step frequency synthesizer

Abstract

The application discloses a 31.6GHz-38.8GHz broadband 400ns fast 10MHz small-step frequency synthesizer, comprising a frequency generating unit and a frequency converting unit, using a 100MHz phase-locked crystal oscillator as a reference source, generating several required signals through a comb spectrum, mixing the several signals, and finally outputting a broadband equal-step signal frequency through frequency multiplication. The broadband equal-step signal frequency is suitable for the local oscillator signal of a broadband analog frequency conversion component. The application realizes conversion from a 100MHz reference signal to an output 31.6-38.6GHz broadband signal with a frequency hopping step of 10MHz and a high spurious index module. The number of sources is greatly reduced, the cost is lowered, and the integration is improved. The patent has the characteristics of a wide working frequency band, a small volume, stable performance and high index consistency, is suitable for various microwave systems such as radars, electronic reconnaissance and electronic countermeasures, and has a very wide application prospect.

Description

Technical Field

[0001] This utility model belongs to the field of microwave receiving technology, and in particular relates to a 31.6GHz-38.8GHz broadband 400ns fast 10MHz small step frequency synthesizer. Background Technology

[0002] To improve the speed of frequency hopping output and reduce clutter signals, current technologies generate multiple signal frequencies from the reference signal using a comb spectrum, including spot frequency signals and frequency hopping signals. These are then combined using units such as frequency multiplication, frequency division, mixing, and switching filter banks. This requires numerous functional units, leading to high costs and complex spatial layouts. This demands a high level of expertise from designers in unit spatial layout design, and the cumbersome micro-assembly process directly impacts subsequent system debugging. Utility Model Content

[0003] To address the aforementioned technical problems, this invention proposes a 31.6GHz-38.8GHz wideband 400ns fast 10MHz small step frequency synthesizer, which can effectively reduce system redundancy, lower costs, and simplify debugging.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A 31.6GHz-38.8GHz broadband 400ns fast 10MHz small-step frequency synthesizer, characterized in that it includes a frequency generation unit and a frequency conversion unit. The frequency generation unit includes a 100MHz phase-locked crystal oscillator and a first power divider connected to it. The frequency input to the 100MHz phase-locked crystal oscillator is divided into a first path and a second path by the first power divider. The first path includes a first amplifier for amplifying the input frequency of a 100MHz phase-locked crystal oscillator, a 100MHz comb spectrum, and a second power divider. The 100MHz phase-locked crystal oscillator is connected to the first amplifier, the first amplifier is connected to the 100MHz comb spectrum, and the 100MHz comb spectrum is connected to the second power divider. The frequency signal generated by the 100MHz comb spectrum is divided into a third path and a fourth path by the second power divider. The third path and the fourth path are used to synthesize and output L01 and L02 frequency signals, respectively. The second path is used to synthesize the output IF frequency signal; The frequency conversion unit includes a first mixing mechanism, a switching mechanism, a filtering mechanism, an amplification mechanism, a second mixing mechanism, and a frequency multiplier. The first mixing mechanism includes a first mixer, the second mixing mechanism includes a second mixer, and the frequency multiplier includes a frequency multiplier. The first mixer is connected to the second mixer via the switching mechanism, the filtering mechanism, and the amplification mechanism. The second mixer is connected to the frequency multiplier via the switching mechanism, the filtering mechanism, and the amplification mechanism. The frequency multiplier is used to output the final frequency after frequency multiplication. The outputs of the second and third paths in the frequency generation unit are respectively connected to the input of the first mixer. The L01 and IF frequency signals transmitted by the two paths serve as the input of the first mixer. The output of the fourth path is connected to the input of the second mixer, and the input L02 frequency signal serves as the input of the second mixer.

[0005] As a preferred technical solution of this utility model: the second path includes a phase-locked loop, a 3.6GHz filter, a DDS, a fourth single-pole double-throw switch, a 0.4-0.5GHz bandpass filter, a 0.5-0.6GHz bandpass filter, and a fifth single-pole double-throw switch. The phase-locked loop is connected to the 3.6GHz filter, the 3.6GHz filter is connected to the DDS, the DDS is connected to the fourth single-pole double-throw switch, the fourth single-pole double-throw switch is connected to the input terminals of the 0.4-0.5GHz bandpass filter and the 0.5-0.6GHz bandpass filter respectively, and the output terminals of the 0.4-0.5GHz bandpass filter and the 0.5-0.6GHz bandpass filter are connected to the fifth single-pole double-throw switch respectively.

[0006] As a preferred embodiment of this utility model: the third path includes a 1.2GHz filter, a second amplifier, a 1.2GHz comb spectrum, a first single-pole triple-throw switch, a 13.2GHz filter, a 14.4GHz filter, a 15.6GHz filter, a second single-pole triple-throw switch, and a third amplifier. The second power divider is connected to the input terminal of the 1.2GHz filter, the output terminal of the 1.2GHz filter is connected to the second amplifier, the second amplifier is connected to the 1.2GHz comb spectrum, the 1.2GHz comb spectrum is connected to the first single-pole triple-throw switch, the first single-pole triple-throw switch is connected to the input terminals of the 13.2GHz filter, the 14.4GHz filter, and the 15.6GHz filter, respectively, the output terminals of the 13.2GHz filter, the 14.4GHz filter, and the 15.6GHz filter are respectively connected to the second single-pole triple-throw switch, and the second single-pole triple-throw switch is connected to the third amplifier.

[0007] As a preferred embodiment of this utility model: the fourth path includes a 2.4–3.2 GHz bandpass filter, a fourth amplifier, a first single-pole double-throw switch, a third single-pole triple-throw switch, a second single-pole double-throw switch, a 2.4 GHz filter, a 2.6 GHz filter, a 2.8 GHz filter, a 3.0 GHz filter, a 3.2 GHz filter, a fourth single-pole triple-throw switch, a third single-pole double-throw switch, a fifth single-pole triple-throw switch, and a fifth amplifier. The second power divider is connected to the input terminal of the 2.4–3.2 GHz bandpass filter, and the output terminal of the 2.4–3.2 GHz bandpass filter is connected to the fourth amplifier. The fourth amplifier is connected to the first single-pole double-throw switch, and the first single-pole double-throw switch is respectively connected to the input terminal of the second power divider. A third single-pole triple-throw switch and a second single-pole double-throw switch are connected. The fourth single-pole triple-throw switch is connected to the input terminals of the 2.4GHz filter, the 2.6GHz filter, and the 2.8GHz filter, respectively. The second single-pole double-throw switch is connected to the input terminals of the 3.0GHz filter and the 3.2GHz filter, respectively. The output terminals of the 2.4GHz filter, the 2.6GHz filter, and the 2.8GHz filter are each connected to the third single-pole triple-throw switch. The output terminals of the 3.0GHz filter and the 3.2GHz filter are each connected to the third single-pole double-throw switch. The fourth single-pole triple-throw switch and the third single-pole double-throw switch are each connected to a fifth single-pole triple-throw switch. The fifth single-pole triple-throw switch is connected to a fifth amplifier.

[0008] As a preferred technical solution of this utility model: the filtering mechanism in the frequency conversion unit includes a 2.6-2.8GHz bandpass filter, a 2.8-3.0GHz bandpass filter, a 3.0-3.2GHz bandpass filter, a 3.2-3.4GHz bandpass filter, a 3.4-3.6GHz bandpass filter, and a 3.6-3.8GHz bandpass filter.

[0009] As a preferred technical solution of this utility model: the switching mechanism in the frequency conversion unit includes a sixth single-pole double-throw switch, a sixth single-pole triple-throw switch, a seventh single-pole double-throw switch, a seventh single-pole triple-throw switch, an eighth single-pole double-throw switch, a ninth single-pole double-throw switch, an eighth single-pole triple-throw switch, and a ninth single-pole triple-throw switch.

[0010] As a preferred technical solution of this utility model: the amplification mechanism in the frequency conversion unit includes a sixth amplifier and a seventh amplifier.

[0011] As a preferred embodiment of this utility model, the frequency conversion unit is specifically as follows: the first mixer is connected to a sixth single-pole double-throw switch, the sixth single-pole double-throw switch is connected to a sixth single-pole triple-throw switch and a seventh single-pole double-throw switch, the sixth single-pole triple-throw switch is connected to the input terminals of a 2.6–2.8 GHz bandpass filter, a 2.8–3.0 GHz bandpass filter, and a 3.0–3.2 GHz bandpass filter, and the seventh single-pole double-throw switch is connected to a 3.2–3.4 GHz bandpass filter, a 3.4–3.6 GHz bandpass filter, and a 3.6–3.8 GHz bandpass filter, respectively. The input terminals of the 2.6–2.8 GHz bandpass filter, the 2.8–3.0 GHz bandpass filter, and the 3.0–3.2 GHz bandpass filter are respectively connected to a seventh single-pole triple-throw switch. The output terminals of the 3.2–3.4 GHz bandpass filter, the 3.4–3.6 GHz bandpass filter, and the 3.6–3.8 GHz bandpass filter are respectively connected to an eighth single-pole double-throw switch. The seventh single-pole triple-throw switch and the eighth single-pole double-throw switch are respectively connected to a ninth single-pole double-throw switch. The ninth single-pole double-throw switch is connected to a sixth amplifier. The sixth amplifier is connected to a second mixer. The second mixer is connected to an eighth single-pole triple-throw switch, which is connected to the input terminals of a 15.8–17 GHz bandpass filter, a 17–18.2 GHz bandpass filter, and an 18.2–19.4 GHz bandpass filter, respectively. The output terminals of the 15.8–17 GHz bandpass filter, the 17–18.2 GHz bandpass filter, and the 18.2–19.4 GHz bandpass filter are connected to a ninth single-pole triple-throw switch, which is connected to a seventh amplifier, and the seventh amplifier is connected to a frequency multiplier.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model achieves broadband frequency hopping signal output of 31.6–38.8 GHz; 2. This invention reduces the number of local oscillator sources and system redundancy by directly synthesizing with reference to 100MHz, thus greatly saving design costs.

[0013] 3. This invention uses Direct Digital Synthesis to achieve fast frequency hopping with small steps, which greatly improves the frequency hopping speed.

[0014] 4. This invention uses a comb spectrum to reduce the degradation of signal frequency phase noise. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the frequency generation unit principle; Figure 2 This is a schematic diagram of the frequency converter unit.

[0016] List of reference numerals in the attached diagram: 1. 100MHz PLL crystal oscillator; 2. First power divider; 3. First amplifier; 4. 100MHz comb spectrum; 5. Second power divider; 6. 1.2GHz filter; 7. Second amplifier; 8. 1.2GHz comb spectrum; 9. First single-pole triple-throw switch; 10. 13.2GHz filter; 11. 14.4GHz filter; 12. 15.6GHz filter; 13. Second single-pole triple-throw switch; 14. Third amplifier; 15. 2.4~3.2GHz bandpass filter; 16. Fourth amplifier; 17. First single-pole double-throw switch; 18. Third single-pole triple-throw switch; 19. Second single-pole double-throw switch; 20. 2.4GHz filter; 21. 2.6GHz 22. 2.8GHz filter; 23. 3.0GHz filter; 24. 3.2GHz filter; 25. Fourth single-pole triple-throw switch; 26. Third single-pole double-throw switch; 27. Fifth single-pole triple-throw switch; 28. Fifth amplifier; 29. ​​Phase-locked loop; 30. 3.6GHz filter; 31. DDS; 32. Fourth single-pole double-throw switch; 33. 0.4–0.5GHz bandpass filter; 34. 0.5–0.6GHz bandpass filter 35. Fifth single-pole double-throw switch; 36. First mixer; 37. Sixth single-pole double-throw switch; 38. Sixth single-pole triple-throw switch; 39. Seventh single-pole double-throw switch; 40. 2.6–2.8 GHz bandpass filter; 41. 2.8–3.0 GHz bandpass filter; 42. 3.0–3.2 GHz bandpass filter; 43. 3.2–3.4 GHz bandpass filter; 44. 3.4–3.6 GHz bandpass filter; 45. 3.6–3 46. ​​8GHz bandpass filter; 47. Seventh single-pole triple-throw switch; 48. Eighth single-pole double-throw switch; 49. Ninth single-pole double-throw switch; 50. Sixth amplifier; 51. Second mixer; 52. Eighth single-pole triple-throw switch; 53. 15.8-17GHz bandpass filter; 54. 17-18.2GHz bandpass filter; 55. 18.2-19.4GHz bandpass filter; 56. Ninth single-pole triple-throw switch; 57. Seventh amplifier; 58. Frequency multiplier. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: like Figure 1-2 As shown, this utility model proposes a 31.6GHz-38.8GHz broadband 400ns fast 10MHz small-step frequency synthesizer, including a frequency generation unit and a frequency conversion unit. The frequency generation unit includes a 100MHz phase-locked crystal oscillator 1 and a first power divider 2 connected thereto. The frequency input to the 100MHz phase-locked crystal oscillator 1 is divided by the first power divider 2 into a first path and a second path. The first path includes a first amplifier 3 for amplifying the input frequency of a 100MHz phase-locked crystal oscillator 1, a 100MHz comb spectrum 4, and a second power divider 5. The 100MHz phase-locked crystal oscillator 1 is connected to the first amplifier 3, the first amplifier 3 is connected to the 100MHz comb spectrum 4, and the 100MHz comb spectrum 4 is connected to the second power divider 5. The frequency signal generated by the 100MHz comb spectrum 4 is divided into a third path and a fourth path by the second power divider 5. The third path and the fourth path are used to synthesize and output L01 and L02 frequency signals, respectively. The second path is used to synthesize the output IF frequency signal; The frequency conversion unit includes a first mixing mechanism, a switching mechanism, a filtering mechanism, an amplification mechanism, a second mixing mechanism, and a frequency multiplier. The first mixing mechanism includes a first mixer 36, the second mixing mechanism includes a second mixer 50, and the frequency multiplier includes a frequency multiplier 57. The first mixer 36 is connected to the second mixer 50 via the switching mechanism, the filtering mechanism, and the amplification mechanism. The second mixer 50 is connected to the frequency multiplier 57 via the switching mechanism, the filtering mechanism, and the amplification mechanism. The frequency multiplier 57 is used to output the final frequency after frequency multiplication. The outputs of the second and third paths in the frequency generation unit are connected to the input of the first mixer 36, respectively. The L01 and IF frequency signals transmitted by the two paths serve as the input of the first mixer 36. The output of the fourth path is connected to the input of the second mixer 50, and the input L02 frequency signal serves as the input of the second mixer 50.

[0018] The second path includes a phase-locked loop 29, a 3.6GHz filter 30, a DDS 31, a fourth single-pole double-throw switch 32, a 0.4-0.5GHz bandpass filter 33, a 0.5-0.6GHz bandpass filter 34, and a fifth single-pole double-throw switch 35. The phase-locked loop 29 is connected to the 3.6GHz filter 30, the 3.6GHz filter 30 is connected to the DDS 31, the DDS 31 is connected to the fourth single-pole double-throw switch 32, the fourth single-pole double-throw switch 32 is connected to the input terminals of the 0.4-0.5GHz bandpass filter 33 and the 0.5-0.6GHz bandpass filter 34, respectively, and the output terminals of the 0.4-0.5GHz bandpass filter 33 and the 0.5-0.6GHz bandpass filter 34 are connected to the fifth single-pole double-throw switch 35, respectively.

[0019] The third path includes a 1.2GHz filter 6, a second amplifier 7, a 1.2GHz comb spectrum 8, a first single-pole triple-throw switch 9, a 13.2GHz filter 10, a 14.4GHz filter 11, a 15.6GHz filter 12, a second single-pole triple-throw switch 13, and a third amplifier 14. The second power divider 5 is connected to the input of the 1.2GHz filter 6. The output of the 1.2GHz filter 6 is connected to the second amplifier 7. The second amplifier 7 is connected to the 1.2GHz comb spectrum 8. The 1.2GHz comb spectrum 8 is connected to the first single-pole triple-throw switch 9. The first single-pole triple-throw switch 9 is connected to the inputs of the 13.2GHz filter 10, the 14.4GHz filter 11, and the 15.6GHz filter 12, respectively. The outputs of the 13.2GHz filter 10, the 14.4GHz filter 11, and the 15.6GHz filter 12 are connected to the second single-pole triple-throw switch 13, respectively. The second single-pole triple-throw switch 13 is connected to the third amplifier 14.

[0020] The fourth path includes a 2.4–3.2 GHz bandpass filter 15, a fourth amplifier 16, a first single-pole double-throw switch 17, a third single-pole triple-throw switch 18, a second single-pole double-throw switch 19, a 2.4 GHz filter 20, a 2.6 GHz filter 21, a 2.8 GHz filter 22, a 3.0 GHz filter 23, a 3.2 GHz filter 24, a fourth single-pole triple-throw switch 25, a third single-pole double-throw switch 26, a fifth single-pole triple-throw switch 27, and a fifth amplifier 28. The second power divider 5 is connected to the input of the 2.4–3.2 GHz bandpass filter 15. The output of the 2.4–3.2 GHz bandpass filter 15 is connected to the fourth amplifier 16. The fourth amplifier 16 is connected to the first single-pole double-throw switch 17, and the first single-pole double-throw switch 17 is connected to the third single-pole triple-throw switch 19. Switch 18 and second single-pole double-throw switch 19, the fourth single-pole triple-throw switch 25 are respectively connected to the input terminals of 2.4GHz filter 20, 2.6GHz filter 21, and 2.8GHz filter 22, the second single-pole double-throw switch 19 is respectively connected to the input terminals of 3.0GHz filter 23 and 3.2GHz filter 24, the output terminals of 2.4GHz filter 20, 2.6GHz filter 21, and 2.8GHz filter 22 are respectively connected to the third single-pole triple-throw switch 18, the output terminals of 3.0GHz filter 23 and 3.2GHz filter 24 are respectively connected to the third single-pole double-throw switch 26, the fourth single-pole triple-throw switch 25 and the third single-pole double-throw switch 26 are respectively connected to the fifth single-pole triple-throw switch 27, and the fifth single-pole triple-throw switch 27 is connected to the fifth amplifier 28.

[0021] Specifically: The input 100MHz frequency signal is fed into the frequency generation unit via a 100MHz phase-locked crystal oscillator 1. The 100MHz phase-locked crystal oscillator 1 then divides the power of the signal into two paths via a 100MHz first power divider 2, namely the first path and the second path, where: The first path is amplified by the first amplifier 3 and sent to the 100MHz comb spectrum 4 as the driving power of the step tube of the 100MHz comb spectrum 4. The 100MHz comb spectrum 4 generates a series of signals with 100MHz intervals, which are divided into two paths by the second power divider 5 of 1~2GHz, namely the third path and the fourth path. in: The frequency signal of the third path is filtered out by a 1.2GHz filter 6 to obtain the required signal, which is then amplified by a second amplifier 7 to serve as the driving power for the 1.2GHz step transistor. The 1.2GHz comb spectrum generates a series of signals spaced at 1.2GHz intervals, which are then split into three signals by a first single-pole triple-throw switch 9. Each signal is selected by a 13.2GHz filter 10, a 14.4GHz filter 11, and a 15.6GHz filter 12 to obtain the 13.2GHz, 14.4GHz, and 15.6GHz signal frequencies, respectively. These signals are then combined and output by a second single-pole triple-throw switch 13, and finally output by a third amplifier 14.

[0022] The fourth path is pre-selected using a 2.4–3.2 GHz bandpass filter 15 to extract signal frequencies in the 2.4–3.2 GHz range. These frequencies are then amplified by a fourth amplifier 16. The amplified signal power is then passed through a first single-pole double-throw switch 17, a third single-pole triple-throw switch 18, and a second single-pole double-throw switch 19. The pre-selected 2.4–3.2 GHz signals are then filtered one by one through a 2.4 GHz filter 20, a 2.6 GHz filter 21, a 2.8 GHz filter 22, a 3.0 GHz filter 23, and a 3.2 GHz filter 24 to extract the 2.4 GHz, 2.6 GHz, 2.8 GHz, 3.0 GHz, and 3.2 GHz signals. Finally, the five signals are combined into one signal through a fourth single-pole triple-throw switch 25, a third single-pole double-throw switch 26, and a fifth single-pole triple-throw switch 27, and finally output through a fifth amplifier 28.

[0023] The other signal from the 100MHz power divider 2 is used as a reference for the phase-locked loop 29, causing the phase-locked loop 29 to generate a 3.6GHz signal frequency. The 3.6GHz signal is then used as a reference frequency for the DDS31, which generates a 400-600MHz signal frequency in 10MHz increments. The 400-600MHz signal is then combined into a single output through the fourth single-pole double-throw switch 32, the 0.4-0.5GHz bandpass filter 33, the 0.5-0.6GHz bandpass filter 34, and the fifth single-pole double-throw switch 35.

[0024] The filtering mechanism in the frequency conversion unit includes a 2.6-2.8GHz bandpass filter 40, a 2.8-3.0GHz bandpass filter 41, a 3.0-3.2GHz bandpass filter 42, a 3.2-3.4GHz bandpass filter 43, a 3.4-3.6GHz bandpass filter 44, and a 3.6-3.8GHz bandpass filter 45.

[0025] The switching mechanism in the frequency converter unit includes a sixth single-pole double-throw switch 37, a sixth single-pole triple-throw switch 38, a seventh single-pole double-throw switch 39, a seventh single-pole triple-throw switch 46, an eighth single-pole double-throw switch 47, a ninth single-pole double-throw switch 48, an eighth single-pole triple-throw switch 51, and a ninth single-pole triple-throw switch 55.

[0026] The amplification mechanism in the frequency conversion unit includes a sixth amplifier 49 and a seventh amplifier 56.

[0027] The frequency conversion unit is specifically as follows: the first mixer 36 is connected to the sixth single-pole double-throw switch 37, the sixth single-pole double-throw switch 37 is connected to the sixth single-pole triple-throw switch 38 and the seventh single-pole double-throw switch 39 respectively, the sixth single-pole triple-throw switch 38 is connected to the input terminals of the 2.6-2.8GHz bandpass filter 40, the 2.8-3.0GHz bandpass filter 41, and the 3.0-3.2GHz bandpass filter 42 respectively, and the seventh single-pole double-throw switch 39 is connected to the input terminals of the 3.2-3.4GHz bandpass filter 43, the 3.4-3.6GHz bandpass filter 44, and the 3.6-3.8GHz bandpass filter 45 respectively. The outputs of the 6–2.8 GHz bandpass filter 40, the 2.8–3.0 GHz bandpass filter 41, and the 3.0–3.2 GHz bandpass filter 42 are respectively connected to the seventh single-pole triple-throw switch 46. The outputs of the 3.2–3.4 GHz bandpass filter 43, the 3.4–3.6 GHz bandpass filter 44, and the 3.6–3.8 GHz bandpass filter 45 are respectively connected to the eighth single-pole double-throw switch 47. The seventh single-pole triple-throw switch 46 and the eighth single-pole double-throw switch 47 are respectively connected to the ninth single-pole double-throw switch 48. The ninth single-pole double-throw switch 48 is connected to the sixth amplifier 49. The sixth amplifier 49 is connected to the second mixer 50. The second mixer 50 is connected to the eighth single-pole triple-throw switch 51. The eighth single-pole triple-throw switch 51 is connected to the input terminals of the 15.8-17GHz bandpass filter 52, the 17-18.2GHz bandpass filter 53, and the 18.2-19.4GHz bandpass filter 54, respectively. The output terminals of the 15.8-17GHz bandpass filter 52, the 17-18.2GHz bandpass filter 53, and the 18.2-19.4GHz bandpass filter 54 are connected to the ninth single-pole triple-throw switch 55, respectively. The ninth single-pole triple-throw switch 55 is connected to the seventh amplifier 56, and the seventh amplifier 56 is connected to the frequency multiplier 57.

[0028] Specifically: The frequency converter receives a 400-600MHz signal from the frequency generation unit, which enters the first mixer 36. The 2.4GHz, 2.6GHz, 2.8GHz, 3.0GHz, and 3.2GHz signals from the frequency generation unit are used as a local oscillator signal for mixing and outputting a 2.6-3.8GHz signal. This 2.6-3.8GHz signal then passes through the sixth single-pole double-throw switch 37, the sixth single-pole triple-throw switch 38, the seventh single-pole double-throw switch 39, the 2.6-2.8GHz filter 22, and the 2.8-3.0GHz... The signal is divided into five segments by filters 23 (3.0–3.2 GHz), 24 (3.2–3.4 GHz), 30 (3.4–3.6 GHz), and 3.6–3.7 GHz. These segments are then combined and output through a seventh single-pole triple-throw switch 46, an eighth single-pole double-throw switch 47, and a ninth single-pole double-throw switch 48. The signal is then amplified by a sixth amplifier 49 and mixed with the 13.2 GHz, 14.4 GHz, and 15.2 GHz signals from the frequency generation unit by a second mixer 50 to output a 15.8–19.4 GHz signal. This signal is then divided into three segments by a eighth single-pole triple-throw switch 51, a 15.8–17 GHz filter, a 17–18.2 GHz filter, and an 18.2–19.4 GHz filter. These segments are then combined and output through a ninth single-pole triple-throw switch 55. The signal power is amplified by a seventh amplifier 56 and used as the driving power level for the subsequent frequency multiplier 57. The multiplied output frequency is 31.6–38.6 GHz.

[0029] In summary, this patented broadband fast frequency hopping source module converts a 100MHz reference signal into a 31.6–38.6GHz broadband signal with a frequency hopping step of 10MHz and high spurious performance.

[0030] This significantly reduces the number of sources, lowers costs, and improves integration. This patent features a wide operating frequency band, small size, stable performance, and high consistency in specifications, making it suitable for various microwave systems such as radar, electronic reconnaissance, and electronic countermeasures, with a very broad application prospect.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any modifications or equivalent changes made based on the technical essence of the present utility model shall still fall within the scope of protection claimed by the present utility model.

Claims

1. A 31.6GHz-38.8GHz broadband 400ns fast 10MHz small-step frequency synthesizer, characterized in that, Includes a frequency generation unit and a frequency conversion unit. The frequency generation unit includes a 100MHz phase-locked crystal oscillator (1) and a first power divider (2) connected thereto. The frequency input to the 100MHz phase-locked crystal oscillator (1) is divided into a first path and a second path by the first power divider (2). The first path includes a first amplifier (3) for amplifying the input frequency of a 100MHz phase-locked crystal oscillator (1), a 100MHz comb spectrum (4), and a second power divider (5). The 100MHz phase-locked crystal oscillator (1) is connected to the first amplifier (3), the first amplifier (3) is connected to the 100MHz comb spectrum (4), and the 100MHz comb spectrum (4) is connected to the second power divider (5). The frequency signal generated by the 100MHz comb spectrum (4) is divided into a third path and a fourth path by the second power divider (5). The third path and the fourth path are used to synthesize and output L01 and L02 frequency signals, respectively. The second path is used to synthesize the output IF frequency signal; The frequency conversion unit includes a first mixing mechanism, a switching mechanism, a filtering mechanism, an amplification mechanism, a second mixing mechanism, and a frequency multiplier mechanism. The first mixing mechanism includes a first mixer (36), the second mixing mechanism includes a second mixer (50), and the frequency multiplier mechanism includes a frequency multiplier (57). The first mixer (36) is connected to the second mixer (50) via the switching mechanism, the filtering mechanism, and the amplification mechanism. The second mixer (50) is connected to the frequency multiplier (57) via the switching mechanism, the filtering mechanism, and the amplification mechanism. The frequency multiplier (57) is used to output the final frequency after frequency multiplication. The output terminals of the second and third paths in the frequency generation unit are respectively connected to the input terminal of the first mixer (36). The L01 and IF frequency signals transmitted by the two paths are used as the input of the first mixer (36). The output terminal of the fourth path is connected to the input terminal of the second mixer (50). The input L02 frequency signal is used as the input of the second mixer (50).

2. The 31.6GHz-38.8GHz broadband 400ns fast 10MHz small-step frequency synthesizer according to claim 1, characterized in that, The second path includes a phase-locked loop (29), a 3.6GHz filter (30), a DDS (31), a fourth single-pole double-throw switch (32), a 0.4-0.5GHz bandpass filter (33), a 0.5-0.6GHz bandpass filter (34), and a fifth single-pole double-throw switch (35). The phase-locked loop (29) is connected to the 3.6GHz filter (30), the 3.6GHz filter (30) is connected to the DDS (31), the DDS (31) is connected to the fourth single-pole double-throw switch (32), the fourth single-pole double-throw switch (32) is connected to the input terminals of the 0.4-0.5GHz bandpass filter (33) and the 0.5-0.6GHz bandpass filter (34), and the output terminals of the 0.4-0.5GHz bandpass filter (33) and the 0.5-0.6GHz bandpass filter (34) are connected to the fifth single-pole double-throw switch (35).

3. The 31.6GHz-38.8GHz broadband 400ns fast 10MHz small-step frequency synthesizer according to claim 1, characterized in that, The third path includes a 1.2GHz filter (6), a second amplifier (7), a 1.2GHz comb spectrum (8), a first single-pole triple-throw switch (9), a 13.2GHz filter (10), a 14.4GHz filter (11), a 15.6GHz filter (12), a second single-pole triple-throw switch (13), and a third amplifier (14). The second power divider (5) is connected to the input of the 1.2GHz filter (6), and the output of the 1.2GHz filter (6) is connected to the second amplifier (7). The second amplifier (7) is connected to the 1.2GHz comb spectrum (8). The comb spectrum (8) is connected to the first single-pole triple-throw switch (9), which is connected to the input terminals of the 13.2GHz filter (10), the 14.4GHz filter (11), and the 15.6GHz filter (12), respectively. The output terminals of the 13.2GHz filter (10), the 14.4GHz filter (11), and the 15.6GHz filter (12) are connected to the second single-pole triple-throw switch (13), which is connected to the third amplifier (14).

4. The 31.6GHz-38.8GHz broadband 400ns fast 10MHz small-step frequency synthesizer according to claim 1, characterized in that, The fourth path includes a 2.4–3.2 GHz bandpass filter (15), a fourth amplifier (16), a first single-pole double-throw switch (17), a third single-pole triple-throw switch (18), a second single-pole double-throw switch (19), a 2.4 GHz filter (20), a 2.6 GHz filter (21), a 2.8 GHz filter (22), a 3.0 GHz filter (23), a 3.2 GHz filter (24), a fourth single-pole triple-throw switch (25), a third single-pole double-throw switch (26), a fifth single-pole triple-throw switch (27), and a fifth amplifier (28). The second power divider (5) is connected to the input of the 2.4–3.2 GHz bandpass filter (15), and the output of the 2.4–3.2 GHz bandpass filter (15) is connected to the fourth amplifier (16). The fourth amplifier (16) is connected to the first single-pole double-throw switch (17), and the first single-pole double-throw switch (17) is connected to the third single-pole triple-throw switch. The switch (18) and the second single-pole double-throw switch (19) are connected to the input terminals of the 2.4GHz filter (20), the 2.6GHz filter (21), and the 2.8GHz filter (22), respectively. The second single-pole double-throw switch (19) is connected to the input terminals of the 3.0GHz filter (23) and the 3.2GHz filter (24), respectively. The output terminals of the 2.4GHz filter (20), the 2.6GHz filter (21), and the 2.8GHz filter (22) are connected to the third single-pole triple-throw switch (18), respectively. The output terminals of the 3.0GHz filter (23) and the 3.2GHz filter (24) are connected to the third single-pole double-throw switch (26), respectively. The fourth single-pole triple-throw switch (25) and the third single-pole double-throw switch (26) are connected to the fifth single-pole triple-throw switch (27), respectively. The fifth single-pole triple-throw switch (27) is connected to the fifth amplifier (28).

5. A 31.6GHz-38.8GHz broadband 400ns fast 10MHz small-step frequency synthesizer according to claim 1, characterized in that, The filtering mechanism in the frequency conversion unit includes a 2.6-2.8 GHz bandpass filter (40), a 2.8-3.0 GHz bandpass filter (41), a 3.0-3.2 GHz bandpass filter (42), a 3.2-3.4 GHz bandpass filter (43), a 3.4-3.6 GHz bandpass filter (44), and a 3.6-3.8 GHz bandpass filter (45).

6. A 31.6GHz-38.8GHz broadband 400ns fast 10MHz small-step frequency synthesizer according to claim 1, characterized in that, The switching mechanism in the frequency converter unit includes a sixth single-pole double-throw switch (37), a sixth single-pole triple-throw switch (38), a seventh single-pole double-throw switch (39), a seventh single-pole triple-throw switch (46), an eighth single-pole double-throw switch (47), a ninth single-pole double-throw switch (48), an eighth single-pole triple-throw switch (51), and a ninth single-pole triple-throw switch (55).

7. A 31.6GHz-38.8GHz broadband 400ns fast 10MHz small-step frequency synthesizer according to claim 1, characterized in that, The amplification mechanism in the frequency conversion unit includes a sixth amplifier (49) and a seventh amplifier (56).

8. A 31.6GHz-38.8GHz broadband 400ns fast 10MHz small-step frequency synthesizer according to claim 5, 6, or 7, characterized in that, The frequency conversion unit is specifically as follows: the first mixer (36) is connected to the sixth single-pole double-throw switch (37), the sixth single-pole double-throw switch (37) is connected to the sixth single-pole triple-throw switch (38) and the seventh single-pole double-throw switch (39), the sixth single-pole triple-throw switch (38) is connected to the input terminals of the 2.6-2.8GHz bandpass filter (40), the 2.8-3.0GHz bandpass filter (41), and the 3.0-3.2GHz bandpass filter (42), respectively, and the seventh single-pole double-throw switch (39) is connected to the input terminals of the 3.2-3.4GHz bandpass filter (43), the 3.4-3.6GHz bandpass filter (44), and the 3.6-3.8GHz bandpass filter (45), respectively. The outputs of the 2.8GHz bandpass filter (40), the 2.8-3.0GHz bandpass filter (41), and the 3.0-3.2GHz bandpass filter (42) are respectively connected to the seventh single-pole triple-throw switch (46). The outputs of the 3.2-3.4GHz bandpass filter (43), the 3.4-3.6GHz bandpass filter (44), and the 3.6-3.8GHz bandpass filter (45) are respectively connected to the eighth single-pole double-throw switch (47). The seventh single-pole triple-throw switch (46) and the eighth single-pole double-throw switch (47) are respectively connected to the ninth single-pole double-throw switch (48). The ninth single-pole double-throw switch (48) is connected to the sixth amplifier (49). The sixth amplifier (49) is connected to the second mixer (50). The second mixer (50) is connected to the eighth single-pole triple-throw switch (51), which is connected to the input terminals of the 15.8-17GHz bandpass filter (52), the 17-18.2GHz bandpass filter (53), and the 18.2-19.4GHz bandpass filter (54). The output terminals of the 15.8-17GHz bandpass filter (52), the 17-18.2GHz bandpass filter (53), and the 18.2-19.4GHz bandpass filter (54) are connected to the ninth single-pole triple-throw switch (55), which is connected to the seventh amplifier (56). The seventh amplifier (56) is connected to the frequency multiplier (57).

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