10-20GHz broadband frequency agility synthesizer

Abstract

The utility model relates to the technical field of wireless communication, in particular to a 10-20GHz broadband frequency agility synthesizer, which comprises an upper box body and a lower box body, the lower box body is provided with a first groove and a second groove, the upper box body is provided with a first bulge and a second bulge, the first bulge and the second bulge are respectively arranged in the first groove and the second groove, and the first bulge and the second bulge are respectively arranged in the first groove and the second groove. A circuit module is arranged between the upper box body and the lower box body; in this way, the technical problems that in the prior art, an existing frequency synthesizer is low in agility speed, poor in spurious suppression effect and incapable of covering the frequency in a wider range are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless communications, in particular to a 10-20GHz broadband agile frequency synthesizer. Background Art

[0002] In today's electronic equipment, the frequency synthesizer is the "heart" of the entire system, determining the system's performance. It is widely used in electronic countermeasures, radar, communications and other fields.

[0003] With the continuous advancement of electronic technology, the requirements for various indicators of frequency synthesis technology are becoming more and more stringent. However, existing frequency synthesizers have problems such as slow agility, poor spurious suppression effect, and inability to cover a wider range of frequencies. Utility Model Content

[0004] The purpose of the present invention is to provide a 10-20 GHz broadband agile frequency synthesizer, aiming to solve the technical problems of the existing frequency synthesizers in the prior art, such as slow agility, poor spurious suppression effect and inability to cover a wider range of frequencies.

[0005] To achieve the above objectives, the present invention adopts a 10-20 GHz broadband agile frequency synthesizer, comprising an upper box body and a lower box body, wherein the lower box body is provided with a first groove and a second groove, and the upper box body is provided with a first protrusion and a second protrusion, wherein the first protrusion and the second protrusion are respectively placed in the first groove and the second groove, and a circuit module is provided between the upper box body and the lower box body;

[0006] The circuit module includes an A region, a B region, a C region, a D region, a first filter, a first mixer, a second filter, a first amplifier, a first switch filter group, a first power divider, a second amplifier, a third filter, a fourth filter, a second mixer, a third amplifier, two single-pole two-switch switches, two groups of second switch filter groups, and a fourth amplifier. The B region is connected to the A region, the C region is connected to the A region through the first filter, the first mixer is connected to the B region, the second filter and the first amplifier are both connected to the first mixer, the D region is arranged between the second filter and the A region, the first switch filter group is arranged between the first amplifier and the first power divider, the second amplifier is arranged between the first power divider and the third filter, the second mixer is connected to the C region, the fourth filter is arranged between the second mixer and the first power divider, the third amplifier is connected to the second mixer, the corresponding single-pole two-switch is connected to the third amplifier, two groups of second switch filter groups are arranged between two single-pole two-switches, and the fourth amplifier is connected to the corresponding single-pole two-switches.

[0007] Among them, the A area includes an adaptive reference constant temperature crystal oscillator, a first comb, a fifth amplifier, a second power divider, a fifth filter, a sixth amplifier, a third power divider, a sixth filter and a seventh amplifier. The first comb is arranged between the adaptive reference constant temperature crystal oscillator and the fifth amplifier, the second power divider is connected to the fifth amplifier, and the second power divider is also connected to the first filter and the B area, the fifth filter is connected to the second power divider, the sixth amplifier is arranged between the fifth filter and the third power divider, the power divider is also connected to the D area and the sixth filter, and the seventh amplifier is arranged between the sixth filter and the C area.

[0008] Among them, the B area includes a second comb-type filter, a seventh filter, an eighth amplifier and a third switching filter group, the second comb-type filter is connected to the second power divider, the seventh filter is connected to the second comb-type filter, the eighth amplifier is connected to the seventh filter, and the third switching filter is connected to the eighth amplifier and the first mixer.

[0009] The C region includes a third mixer, a ninth amplifier, a fourth switching filter group, an eighth filter, a tenth amplifier, and an eleventh amplifier. The third mixer is connected to the first filter and the seventh amplifier, the ninth amplifier is connected to the third mixer, the fourth switching filter group is arranged between the ninth amplifier and the eighth filter, the tenth amplifier is connected to the eighth filter, and the eleventh amplifier is connected to the tenth amplifier and the second mixer.

[0010] Wherein, the D region is a DDS intermediate frequency generator.

[0011] Wherein, the lower box body has a rounded corner structure.

[0012] The utility model discloses a 10-20 GHz broadband agile frequency synthesizer, which realizes a frequency of 400-600 MHz by directly frequency synthesizing the A region, the B region, the C region, the D region, the first filter, the first mixer, the second filter, the first amplifier, the first switch filter group, the first power divider, the second amplifier, the third filter, the fourth filter, the second mixer, the third amplifier, two single-pole two-switches, two groups of the second switch filter groups and the fourth amplifier, and then converts the frequency to 2000-3000 MHz by coherent direct frequency synthesis technology, and realizes a 10-20 GHz frequency output by a second coherent direct frequency synthesis technology, thereby solving the technical problems of slow agility, poor spurious suppression effect and inability to cover a wider range of frequencies in existing frequency synthesizers in the prior art.

[0013] This utility model uses hybrid frequency synthesis technology, with internal and external reference signals automatically switched, and multiple outputs. After circuit design and debugging, test results show that the multi-channel frequency synthesizer has a variable frequency local oscillator switching speed of ≤500ns, a step of 1M, and spurious suppression of ≤-70dBc. It also has a compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a structural diagram of a 10-20 GHz broadband agile frequency synthesizer of the present invention.

[0016] Figure 2 It is a front view of the 10-20 GHz broadband agile frequency synthesizer of the present invention.

[0017] Figure 3 The utility model is a circuit diagram of a 10-20 GHz broadband agile frequency synthesizer.

[0018] 101 - upper box body, 102 - lower box body, 103 - first groove, 104 - second groove, 105 - first protrusion, 106 - second protrusion, 107 - rounded corner structure. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0020] See also Figures 1 to 3 ,in Figure 1 This is a schematic diagram of the structure of the 10-20GHz broadband agile frequency synthesizer of the utility model. Figure 2 This is the main view of the 10-20GHz broadband agile frequency synthesizer of the utility model. Figure 3 The utility model is a circuit diagram of a 10-20 GHz broadband agile frequency synthesizer.

[0021] The utility model provides a 10-20 GHz broadband agile frequency synthesizer, comprising an upper box body 101 and a lower box body 102, wherein the lower box body 102 is provided with a first groove 103 and a second groove 104, and the upper box body 101 is provided with a first protrusion 105 and a second protrusion 106, wherein the first protrusion 105 and the second protrusion 106 are respectively placed in the first groove 103 and the second groove 104, and a circuit module is provided between the upper box body 101 and the lower box body 102;

[0022] The circuit module includes an A region, a B region, a C region, a D region, a first filter, a first mixer, a second filter, a first amplifier, a first switch filter group, a first power divider, a second amplifier, a third filter, a fourth filter, a second mixer, a third amplifier, two single-pole two-switch switches, two groups of second switch filter groups, and a fourth amplifier. The B region is connected to the A region, the C region is connected to the A region through the first filter, the first mixer is connected to the B region, the second filter and the first amplifier are both connected to the first mixer, the D region is arranged between the second filter and the A region, the first switch filter group is arranged between the first amplifier and the first power divider, the second amplifier is arranged between the first power divider and the third filter, the second mixer is connected to the C region, the fourth filter is arranged between the second mixer and the first power divider, the third amplifier is connected to the second mixer, the corresponding single-pole two-switch is connected to the third amplifier, two groups of second switch filter groups are arranged between two single-pole two-switches, and the fourth amplifier is connected to the corresponding single-pole two-switches.

[0023] According to this specific embodiment, by directly frequency synthesizing the A region, the B region, the C region, the D region, the first filter, the first mixer, the second filter, the first amplifier, the first switch filter group, the first power divider, the second amplifier, the third filter, the fourth filter, the second mixer, the third amplifier, two single-pole two-switch switches, two groups of the second switch filter groups, and the fourth amplifier, a frequency of 400-600 MHz is achieved, and then the frequency is converted to 2000-3000 MHz by coherent direct frequency synthesis technology. Then, a frequency output of 10-20 GHz is achieved by a second coherent direct frequency synthesis technology. In this way, the technical problems of slow agility, poor spurious suppression effect, and inability to cover a wider frequency range of existing frequency synthesizers in the prior art are solved.

[0024] The A region includes an adaptive reference oven-controlled crystal oscillator, a first comb, a fifth amplifier, a second power divider, a fifth filter, a sixth amplifier, a third power divider, a sixth filter, and a seventh amplifier. The first comb is arranged between the adaptive reference oven-controlled crystal oscillator and the fifth amplifier. The second power divider is connected to the fifth amplifier, and the second power divider is also connected to the first filter and the B region. The fifth filter is connected to the second power divider. The sixth amplifier is arranged between the fifth filter and the third power divider. The power divider is also connected to the D region and the sixth filter. The seventh amplifier is arranged between the sixth filter and the C region.

[0025] The B region includes a second comb pulse, a seventh filter, an eighth amplifier, and a third switch filter group, wherein the second comb pulse is connected to the second power divider, the seventh filter is connected to the second comb pulse, the eighth amplifier is connected to the seventh filter, and the third switch filter is connected to the eighth amplifier and the first mixer;

[0026] The C region includes a third mixer, a ninth amplifier, a fourth switching filter group, an eighth filter, a tenth amplifier, and an eleventh amplifier, wherein the third mixer is connected to the first filter and the seventh amplifier, the ninth amplifier is connected to the third mixer, the fourth switching filter group is arranged between the ninth amplifier and the eighth filter, the tenth amplifier is connected to the eighth filter, and the eleventh amplifier is connected to the tenth amplifier and the second mixer;

[0027] The D region is a DDS intermediate frequency generator.

[0028] This utility model adopts hybrid frequency synthesis technology, with internal and external reference signals automatically switched and multi-channel output. After circuit design and debugging, test results show that the frequency conversion local oscillator switching speed of this multi-channel frequency synthesizer is ≤500ns, the step is 1M, and the spurious suppression is ≤-70dBc; the structure is compact;

[0029] The broadband agile frequency synthesizer generates a low-spurious 400-600 MHz intermediate frequency signal from the D region;

[0030] The broadband agile frequency synthesizer generates the required frequency of (local oscillator 1) through the first comb signal;

[0031] The broadband agile frequency mixing generates a frequency of 200-300 MHz, which is then filtered in sections by a switch filter group to achieve a low spurious signal output of 200-300 MHz;

[0032] The broadband agile frequency mixing generates a frequency of 2000-3000 MHz, which is mixed by (local oscillator 2) to generate a signal output of 10-20 GHz;

[0033] High isolation of local oscillator signals and -70dBc suppression of other signals achieved by switching filter banks;

[0034] Achieve -70dBc suppression of spurious signals in the 2000-3000MHz range through a switching filter bank;

[0035] Achieve -70dBc spurious suppression of 15-3000MHz signals through a switching filter bank;

[0036] The spurious signal of 13-17GHz (LO 2) is suppressed by -70dBc through the switching filter bank;

[0037] Achieve -70dBc suppression of 10-20GHz RF signal spurious signals through a switching filter bank;

[0038] The spurious -70Bc suppression of 10-20GHz RF signals is achieved through a switching filter bank.

[0039] The lower box body 102 has a rounded corner structure 107 .

[0040] According to this specific embodiment, by providing the rounded corner structure 107 , damage can be prevented during contact.

[0041] A 10-20 GHz broadband agile frequency synthesizer of the present invention is used to achieve a frequency of 400-600 MHz by directly frequency synthesizing the A region, the B region, the C region, the D region, the first filter, the first mixer, the second filter, the first amplifier, the first switch filter group, the first power divider, the second amplifier, the third filter, the fourth filter, the second mixer, the third amplifier, two single-pole two-switches, two groups of the second switch filter groups and the fourth amplifier. The frequency is then converted to 2000-3000 MHz by coherent direct frequency synthesis technology, and a 10-20 GHz frequency output is achieved by a second coherent direct frequency synthesis technology. In this way, the technical problems of slow agility, poor spurious suppression effect and inability to cover a wider range of frequencies in existing frequency synthesizers in the prior art are solved.

[0042] This utility model uses hybrid frequency synthesis technology, with internal and external reference signals automatically switched, and multiple outputs. After circuit design and debugging, test results show that the multi-channel frequency synthesizer has a variable frequency local oscillator switching speed of ≤500ns, a step of 1M, and spurious suppression of ≤-70dBc. It also has a compact structure.

[0043] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the utility model.

Claims

1. A 10-20 GHz broadband agile frequency synthesizer, characterized in that: The device comprises an upper box body and a lower box body, wherein the lower box body is provided with a first groove and a second groove, and the upper box body is provided with a first protrusion and a second protrusion, wherein the first protrusion and the second protrusion are respectively placed in the first groove and the second groove, and a circuit module is provided between the upper box body and the lower box body; The circuit module includes an A region, a B region, a C region, a D region, a first filter, a first mixer, a second filter, a first amplifier, a first switch filter group, a first power divider, a second amplifier, a third filter, a fourth filter, a second mixer, a third amplifier, two single-pole two-switch switches, two groups of second switch filter groups, and a fourth amplifier. The B region is connected to the A region, the C region is connected to the A region through the first filter, the first mixer is connected to the B region, the second filter and the first amplifier are both connected to the first mixer, the D region is arranged between the second filter and the A region, the first switch filter group is arranged between the first amplifier and the first power divider, the second amplifier is arranged between the first power divider and the third filter, the second mixer is connected to the C region, the fourth filter is arranged between the second mixer and the first power divider, the third amplifier is connected to the second mixer, the corresponding single-pole two-switch is connected to the third amplifier, two groups of second switch filter groups are arranged between two single-pole two-switches, and the fourth amplifier is connected to the corresponding single-pole two-switches.

2. The 10-20 GHz broadband agile frequency synthesizer according to claim 1, wherein: The A region includes an adaptive reference constant temperature crystal oscillator, a first comb, a fifth amplifier, a second power divider, a fifth filter, a sixth amplifier, a third power divider, a sixth filter and a seventh amplifier. The first comb is arranged between the adaptive reference constant temperature crystal oscillator and the fifth amplifier, the second power divider is connected to the fifth amplifier, and the second power divider is also connected to the first filter and the B region, the fifth filter is connected to the second power divider, the sixth amplifier is arranged between the fifth filter and the third power divider, the power divider is also connected to the D region and the sixth filter, and the seventh amplifier is arranged between the sixth filter and the C region.

3. The 10-20 GHz broadband agile frequency synthesizer according to claim 2, wherein: The B area includes a second comb pulse, a seventh filter, an eighth amplifier and a third switching filter group. The second comb pulse is connected to the second power divider, the seventh filter is connected to the second comb pulse, the eighth amplifier is connected to the seventh filter, and the third switching filter is connected to the eighth amplifier and the first mixer.

4. The 10-20 GHz broadband agile frequency synthesizer according to claim 3, wherein: The C region includes a third mixer, a ninth amplifier, a fourth switching filter group, an eighth filter, a tenth amplifier, and an eleventh amplifier. The third mixer is connected to the first filter and the seventh amplifier, the ninth amplifier is connected to the third mixer, the fourth switching filter group is arranged between the ninth amplifier and the eighth filter, the tenth amplifier is connected to the eighth filter, and the eleventh amplifier is connected to the tenth amplifier and the second mixer.

5. The 10-20 GHz broadband agile frequency synthesizer according to claim 4, characterized in that: The D region is a DDS intermediate frequency generator.

6. The 10-20 GHz broadband agile frequency synthesizer according to claim 5, characterized in that: The lower box body has a rounded corner structure.

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