Frequency conversion module under 18GHz-40GHz high stray bandwidth

Abstract

The utility model discloses a frequency conversion module under a high stray bandwidth of 18 GHz to 40 GHz. The first signal channel comprises a first amplitude limiter, a first low-noise amplifier, a first numerical control attenuator, a first band-pass filtering module, a second low-noise amplifier, a second low-pass filter, a first two-power divider, a third one-out-of-two switch, a third low-noise amplifier, a second band-pass filtering module, a first frequency mixer, a second low-pass filter and a fourth low-noise amplifier which are connected in sequence. A fourth band-pass filter; the second signal channel comprises a second amplitude limiter, a fifth low-noise amplifier, a second numerical control attenuator, a third band-pass filtering module, a sixth low-noise amplifier, a third low-pass filter, a second power divider, a sixth alternative switch, a seventh low-noise amplifier, a fourth band-pass filtering module, a second frequency mixer, a fourth low-pass filter and an eighth low-noise amplifier which are connected in sequence. And a band-pass filter VIII. The utility model has the advantages of wide instantaneous bandwidth, good in-band stray, small in-band flatness, low failure rate, safety, reliability and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of communications, in particular to a frequency conversion module under a high spurious bandwidth of 18 GHz to 40 GHz. Background Art

[0002] Existing conventional down-conversion modules generally adopt a single or double frequency conversion scheme with a narrow instantaneous bandwidth (generally not exceeding 2 GHz). The disadvantage of this is that it is difficult to simultaneously receive multiple signals with different bandwidths exceeding 4 GHz.

[0003] Due to the limitations of the frequency conversion solution, it is difficult to achieve the sorting and reception of high-quality signals with an instantaneous bandwidth exceeding 4 GHz, which brings difficulties to broadband detection and the simultaneous reception of multiple signals in cutting-edge high-speed communications. Even if the reception of broadband signals is achieved, the intermodulation and spurious effects caused by the sorting and amplification of the signals themselves are unsatisfactory and not very practical. Summary of the Invention

[0004] The utility model provides a frequency conversion module with a high spurious bandwidth of 18GHz to 40GHz, comprising:

[0005] The first signal path includes a limiter 1 (1), a low noise amplifier 1 (2), a digitally controlled attenuator 1 (3), a first band-pass filter module, a low noise amplifier 2 (8), a low pass filter 2 (9), a second power divider 1 (10), a two-to-one switch 3 (11), a low noise amplifier 3 (12), a second band-pass filter module, a mixer 1 (15), a low pass filter 2 (17), a low noise amplifier 4 (18), and a band-pass filter 4 (19), which are connected in sequence;

[0006] The second signal path includes a limiter 2 (21), a low noise amplifier 5 (22), a digitally controlled attenuator 2 (23), a third band-pass filter module, a low noise amplifier 6 (26), a low-pass filter 3 (29), a second power divider 2 (30), a two-to-one switch 6 (31), a low noise amplifier 7 (32), a fourth band-pass filter module, a mixer 2 (36), a low-pass filter 4 (37), a low noise amplifier 8 (38), and a band-pass filter 8 (39), which are connected in sequence.

[0007] Preferably, the first bandpass filter module comprises: a two-choose-one switch 1 (4) connected to a bandpass filter 1 (5) and a bandpass filter 2 (6) through a parallel circuit, and then connected to a two-choose-one switch 2 (7).

[0008] Preferably, the second band-pass filter module comprises: a four-to-one switch (13) connected to four band-pass filters (14) through a parallel circuit and then connected to a four-to-one switch (15).

[0009] Preferably, the third bandpass filter module comprises: a two-choice switch four (24) connected to a bandpass filter five (25) and a bandpass filter six (26) through a parallel circuit, and then connected to a two-choice switch two (7).

[0010] Preferably, the fourth bandpass filter module comprises: a four-to-one switch three (33) connected to four bandpass filters seven (34) through a parallel circuit and then connected to a four-to-one switch four (35).

[0011] Preferably, the first signal path and the second signal path are connected in series in sequence through the second power divider 1 (10) and the two-to-one switch 3 (11) of the first signal path, and the second power divider 2 (30) and the two-to-one switch 6 (31) of the second signal path.

[0012] Preferably, the input signals of the first signal path and the second signal path are 18 GHz to 40 GHz.

[0013] Preferably, the first signal path further includes a mixing input signal connected to mixer one (16) via amplifier one (20), and the mixing input signal is 28 GHz to 50 GHz; the second signal path further includes a mixing input signal connected to mixer two (36) via amplifier two (40), and the mixing input signal is 28 GHz to 50 GHz.

[0014] Preferably, mixer one (16) and mixer two (36) are SIM277 model mixers.

[0015] The beneficial effects of the utility model are:

[0016] It solves the technical problems of traditional down-conversion modules such as narrow instantaneous bandwidth, poor in-band spurious signals, and poor in-band flatness. It has the advantages of wide instantaneous bandwidth, good in-band spurious signals, small in-band flatness, excellent key technical indicators, low failure rate, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] This specification will be further described in the form of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting, and in these embodiments, like numbers represent like structures, wherein:

[0018] Figure 1 The utility model provides a principle block diagram of a frequency conversion module under a high spurious bandwidth of 18 GHz to 40 GHz.

[0019] Numbers in the figure:

[0020] 1-Limiter 1, 2-Low Noise Amplifier 1, 3-CNC Attenuator 1, 4-2-Select Switch 1, 5-Band Pass Filter 1, 6-Band Pass Filter 2, 7-2-Select Switch 2, 8-Low Noise Amplifier 2, 9-Low Pass Filter 1, 10-Power Splitter 1, 11-2-Select Switch 3, 12-Low Noise Amplifier 3, 13-4-Select Switch 1, 14-Band Pass Filter 3, 15-4-Select Switch 2, 16-Mixer 1, 17-Low Pass Filter 2, 18-Low Noise Amplifier 4, 19-Band Pass Filter 4, 20-Amplifier 1, 21-Limiter Amplifier 2, 22-Low Noise Amplifier 5, 23-Digitally Controlled Attenuator 2, 24-Two-Select Switch 4, 25-Band-Pass Filter 5, 26-Band-Pass Filter 6, 27-Two-Select Switch 5, 28-Low Noise Amplifier 6, 29-Low-Pass Filter 3, 30-Two-Power Splitter 2, 31-Two-Select Switch 6, 32-Low Noise Amplifier 7, 33-Four-Select Switch 3, 34-Band-Pass Filter 7, 35-Four-Select Switch 4, 36-Mixer 2, 37-Low-Pass Filter 4, 38-Low Noise Amplifier 8, 39-Band-Pass Filter 8, 40-Amplifier 2. DETAILED DESCRIPTION

[0021] To more clearly illustrate the technical solutions of the embodiments of this specification, the following briefly describes the drawings required for describing the embodiments. Obviously, the drawings described below are merely examples or embodiments of this specification. Those skilled in the art can apply this specification to other similar scenarios based on these drawings without inventive effort. Unless otherwise apparent from the context or otherwise noted, the same reference numerals in the figures represent the same structure or operation.

[0022] It should be understood that the terms "system," "device," "unit," and / or "module" used herein are a method for distinguishing different components, elements, parts, portions, or assemblies at different levels. However, if other terms can achieve the same purpose, the terms may be replaced by other expressions.

[0023] As used in this specification and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not refer to the singular but also include the plural. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.

[0024] Flowcharts are used throughout this specification to illustrate the operations performed by systems according to embodiments of this specification. It should be understood that preceding or following operations do not necessarily need to be performed in exact order. Instead, the steps may be processed in reverse order or simultaneously. Furthermore, other operations may be added to these processes, or one or more operations may be removed from these processes.

[0025] Figure 1 The utility model provides a principle block diagram of a frequency conversion module under a high spurious bandwidth of 18 GHz to 40 GHz, comprising a first signal path and a second signal path.

[0026] The first signal path includes a limiter 1, a low-noise amplifier 2, a digitally controlled attenuator 3, a first band-pass filter module, a low-noise amplifier 8, a low-pass filter 9, a second power divider 10, a two-to-one switch 11, a low-noise amplifier 3 12, a second band-pass filter module, a mixer 15, a low-pass filter 17, a low-noise amplifier 4 18, and a band-pass filter 4 19, which are connected in sequence.

[0027] The second signal path includes a limiter 21, a low-noise amplifier 5 22, a digitally controlled attenuator 23, a third band-pass filter module, a low-noise amplifier 6 26, a low-pass filter 3 29, a second power divider 30, a two-to-one switch 6 31, a low-noise amplifier 7 32, a fourth band-pass filter module, a mixer 2 36, a low-pass filter 4 37, a low-noise amplifier 8 38, and a band-pass filter 8 39, which are connected in sequence.

[0028] Specifically, the first bandpass filter module includes: a two-choose-one switch 1 4 connected to a two-choose-one switch 2 7 through a parallel circuit of a bandpass filter 1 5 and a bandpass filter 2 6 .

[0029] Specifically, the second band-pass filter module includes: a four-to-one switch 13 connected to a four-to-one switch 2 15 through a parallel circuit of four band-pass filters 3 14 .

[0030] Specifically, the third band-pass filter module includes: a two-to-one switch 4 24 connected to a two-to-one switch 2 7 through a parallel circuit of a band-pass filter 5 25 and a band-pass filter 6 26 .

[0031] Specifically, the fourth band-pass filter module includes: a four-to-one switch 3 33 connected to a four-to-one switch 4 35 through four band-pass filters 7 34 in parallel.

[0032] Specifically, the first signal path and the second signal path are connected in series via the first signal path's two-power splitter 10 and two-to-one switch 3 11 , and the second signal path's two-power splitter 30 and two-to-one switch 6 31 .

[0033] Specifically, the input signals of the first signal path and the second signal path are 18 GHz to 40 GHz, and the first signal path and the second signal path respectively output IF signals of 8 GHz to 12 GHz.

[0034] Furthermore, the first signal path and the second signal path can receive the same frequency or different frequencies. By switching between power divider 10 and power divider 2 30, two-to-one switch 3 11 and two-to-one switch 6 31, instantaneous splicing with a maximum bandwidth of up to 8 GHz can be achieved.

[0035] Specifically, the first signal path also includes a mixing input signal, which is connected to mixer 16 through amplifier 1 20, and the mixing input signal is 28 GHz to 50 GHz; the second signal path also includes a mixing input signal, which is connected to mixer 2 36 through amplifier 2 40, and the mixing input signal is 28 GHz to 50 GHz.

[0036] Specifically, the first mixer 16 and the second mixer 36 are SIM277 mixers.

[0037] The utility model provides a frequency conversion module with a high spurious bandwidth of 18GHz to 40GHz. The models of the components are as follows: 1-limiter 1 (HG128X3-1), 2-low noise amplifier 1 (XT4019), 3-digital control attenuator 1 (CNW400402B), 4-two-select-one switch 1 (ISW-0040BDT-PD), 5-bandpass filter 1 (HTBP25R0-14R0), 6-bandpass filter 2 (HTBP34R0-12R0), 7-two-select-one switch 2 (ISW-0040BDT-PDM), 8-low noise amplifier 2 (XC-LNA-1440-14), 9-low-pass filter Filter 1 (HTLP40R0-001), 10-Power Splitter 1 (IPD-1840), 11-2-Select Switch 3 (ISW-0040BDT-PDM), 12-Low Noise Amplifier 3 (XC-LNA-1440-12), 13-4-Select Switch 1 (HGC122M), 14-Bandpass Filter 3 (HTBP36R5-7R0), 15-4-Select Switch 2 (HGC122), 16-Mixer 1 (SIM277), 17-Low-Pass Filter 2 (HGC171-14), 18-Low Noise Amplifier 4 (HGC378), 19-Bandpass Filter 4 (HTBP10R0-4R0) 20-Amplifier 1 (HGC454), 21-Limiter 2 (HG128X3-1), 22-Low Noise Amplifier 5 (XT4019), 23-Digitally Controlled Attenuator 2 (CNW400402B), 24-Two-to-One Switch 4 (ISW-0040BDT-PD), 25-Bandpass Filter 5 (HTBP25R0-14R0), 26-Bandpass Filter 6 (HTBP34R0-12R0), 27-Two-to-One Switch 5 (ISW-0040BDT-PDM), 28-Low Noise Amplifier 6 (XC-LNA-1440-14), 29-Low-Pass Filter 3 (HTLP40R0-001) 30-Power Splitter 2 (IPD-1840), 31-2-to-1 Switch 6 (ISW-0040BDT-PDM), 32-Low Noise Amplifier 7 (XC-LNA-1440-12), 33-4-to-1 Switch 3 (HGC122M), 34-Bandpass Filter 7 (HTBP36R5-7R0), 35-4-to-1 Switch 4 (HGC122), 36-Mixer 2 (SIM277M), 37-Low-Pass Filter 4 (HGC171-14), 38-Low Noise Amplifier 8 (HGC378), 39-Bandpass Filter 8 (HTBP10R0-4R0), 40-Amplifier 2 (HGC454)

[0038] The utility model provides a frequency conversion module with a high spurious bandwidth of 18GHz to 40GHz, and the technical indicators achieved are as follows:

[0039] Receive noise figure: ≤6.5dB (full temperature);

[0040] Anti-burnout power: ≥2W (receiving front-end input, continuous wave, duration 1 minute);

[0041] Input and output standing waves

[0042] 18GHz~40GHz:≤3;

[0043] 8GHz~12GHz:≤2.

[0044] Input P-1: not less than -30dBm.

[0045] Small signal gain average: 22~25dB (allowable variation of ±3dB over full temperature).

[0046] Small signal gain fluctuation: ≤±3.5dB.

[0047] Intermodulation suppression: ≥35dBc.

[0048] Clutter level: ≤-100dBm.

[0049] Local oscillator phase noise: ≤-75dBc / Hz@1kHz, ≤-80dBc / Hz@10kHz (at 40GHz).

[0050] Image suppression: ≥80dBc.

[0051] The above-described embodiment utilizes a low-cost, highly stable, and reliable design solution, resolving the issues inherent in using traditional switch filter banks for preselection, large dynamic ranges, complex circuits, high costs, and complex debugging and control. The frequency conversion portion is assembled entirely using micro-assembly processes, resulting in simple control of the entire RF link, low power consumption, and excellent product consistency. This design requires virtually no debugging, offers low production costs, excellent temperature stability, and high reliability. It can be used as a universal module for broadband monitoring and reception, and boasts strong scalability.

[0052] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A frequency conversion module with a high spurious bandwidth of 18 GHz to 40 GHz, characterized in that: include: The first signal path includes a limiter 1 (1), a low noise amplifier 1 (2), a digitally controlled attenuator 1 (3), a first band-pass filter module, a low noise amplifier 2 (8), a low pass filter 1 (9), a second power divider 1 (10), a two-to-one switch 3 (11), a low noise amplifier 3 (12), a second band-pass filter module, a mixer 1 (16), a low pass filter 2 (17), a low noise amplifier 4 (18), and a band-pass filter 4 (19), which are connected in sequence; The second signal path includes a limiter 2 (21), a low noise amplifier 5 (22), a digitally controlled attenuator 2 (23), a third band-pass filter module, a low noise amplifier 6 (28), a low pass filter 3 (29), a second power divider 2 (30), a two-to-one switch 6 (31), a low noise amplifier 7 (32), a fourth band-pass filter module, a mixer 2 (36), a low pass filter 4 (37), a low noise amplifier 8 (38), and a band-pass filter 8 (39), which are connected in sequence.

2. The frequency conversion module with a high spurious bandwidth of 18 GHz to 40 GHz according to claim 1, characterized in that: The first bandpass filter module comprises: a two-choose-one switch 1 (4) connected to a bandpass filter 1 (5) and a bandpass filter 2 (6) through a parallel circuit, and then connected to a two-choose-one switch 2 (7).

3. The frequency conversion module with a high spurious bandwidth of 18 GHz to 40 GHz according to claim 1, characterized in that: The second band-pass filter module comprises: a four-to-one switch (13) connected to four band-pass filters (14) through a parallel circuit and then connected to a four-to-one switch (15).

4. The frequency conversion module with a high spurious bandwidth of 18 GHz to 40 GHz according to claim 1, characterized in that: The third bandpass filter module comprises: a two-choose-one switch four (24) connected to a bandpass filter five (25) and a bandpass filter six (26) through a parallel circuit, and then connected to a two-choose-one switch two (7).

5. The frequency conversion module with a high spurious bandwidth of 18 GHz to 40 GHz according to claim 1, characterized in that: The fourth band-pass filter module comprises: a four-to-one switch three (33) connected to four band-pass filters seven (34) through a parallel circuit and then connected to a four-to-one switch four (35).

6. The frequency conversion module with a high spurious bandwidth of 18 GHz to 40 GHz according to claim 1, characterized in that: The first signal path and the second signal path are connected in series in sequence through the second power divider 1 (10) and the two-to-one switch 3 (11) of the first signal path, and the second power divider 2 (30) and the two-to-one switch 6 (31) of the second signal path.

7. The frequency conversion module with a high spurious bandwidth of 18 GHz to 40 GHz according to claim 1, characterized in that: The input signals of the first signal path and the second signal path are 18 GHz to 40 GHz.

8. The frequency conversion module with a high spurious bandwidth of 18 GHz to 40 GHz according to claim 7, characterized in that: include: The first signal path also includes a mixing input signal connected to mixer one (16) through amplifier one (20), and the mixing input signal is 28 GHz to 50 GHz; The second signal path also includes a mixing input signal connected to the second mixer (36) through the second amplifier (40), and the mixing input signal is 28GHz to 50GHz.

9. The frequency conversion module with a high spurious bandwidth of 18 GHz to 40 GHz according to claim 8, characterized in that: The mixer 1 (16) and the mixer 2 (36) are SIM277 model mixers.

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