W-band high-transmitting-power frequency conversion module

Abstract

The invention discloses a W-band high transmitting power frequency conversion module, which belongs to the technical field of radio frequency microwaves, comprises an upper frequency conversion assembly and a lower frequency conversion assembly, and is characterized by further comprising a transmitting amplification assembly, a power amplification assembly, a circulator, a low noise amplification assembly and a receiving amplification assembly, the up-conversion assembly is electrically connected with the power amplifier assembly, the low-noise amplifier assembly is electrically connected with the down-conversion assembly, the down-conversion assembly is electrically connected with the receiving and amplifying assembly, and the circulator is electrically connected with the power amplifier assembly and the low-noise amplifier assembly. Different functions are modularly designed and combined with the circulator, so that the isolation degree between receiving and transmitting links can be increased, the debugging and testing cost is reduced, the debugging and testing time is shortened, and the link performance is enhanced.

Description

Technical Field

[0001] The present invention relates to the field of radio frequency microwave technology, and in particular to a W-band high transmission power frequency conversion module. Background Art

[0002] The W-band frequency range is 75GHz-110GHz. Due to its high frequency and short wavelength, the insertion loss and transmission loss of the mixer in the frequency conversion module are very large. Therefore, it is necessary to reasonably plan the routing and signal transmission length as well as the device selection to reduce power waste.

[0003] In addition, in order to realize the miniaturization of W-band frequency conversion module, the system integration complexity is relatively high. It is necessary to ensure that the performance indicators are qualified under the conditions of miniaturization and high integration, which makes the chip selection more picky.

[0004] When the transmission power is high, the final power amplifier will generate a lot of heat, which will cause the output power and gain of the final power amplifier to change dramatically after a long period of operation, resulting in reduced product stability. High transmission power will also increase the difficulty of selecting the final signal switching device.

[0005] A Chinese patent document with publication number CN103296973A and publication date September 11, 2013 discloses a W-band up-conversion module, including an upper cavity and a lower cavity, wherein a power printed circuit board and an insulator are installed in the upper cavity, and a radio frequency link is installed on the top of the lower cavity, wherein the power printed circuit board is vertically connected to the radio frequency link through the insulator, and waveguide structures are also arranged in the upper cavity and the lower cavity, respectively, and the radio frequency link includes a first W-band amplifier and a second W-band amplifier, a W-band mixer, a third W-band amplifier, and a fourth W-band amplifier. , intermediate frequency attenuator, the components are arranged in a planar hybrid integration manner, the first W-band amplifier, the second W-band amplifier, the W-wave mixer, the third W-band amplifier, and the fourth W-band amplifier are connected in sequence, and the intermediate frequency attenuator is also connected to the W-wave mixer; the input signal is amplified by the first W-band amplifier and the second W-band amplifier, and then up-converted through the mixer together with the intermediate frequency signal output from the intermediate frequency attenuator, the up-converted RF signal is output from the RF output interface after passing through the third W-band amplifier and the fourth W-band amplifier, and the intermediate frequency attenuator is used to control the transmission power level.

[0006] The W-band up-conversion module disclosed in the patent document has components arranged in a three-dimensional structure. The components in the RF link and the power printed circuit board are vertically interconnected through insulators, which enhances the isolation between the power supply and components and improves the electromagnetic compatibility of the module. However, the isolation between the transceiver link is poor, which affects the link performance; and the commissioning time is long and the commissioning cost is high. Summary of the invention

[0007] In order to overcome the defects of the above-mentioned prior art, the present invention provides a W-band high transmission power frequency conversion module. The present invention modularizes the design of different functions and combines a circulator, which can increase the isolation between the transmitting and receiving links, reduce the debugging cost and time, and enhance the link performance.

[0008] The present invention is achieved through the following technical solutions: A W-band high transmission power frequency conversion module includes an up-conversion component and a down-conversion component, and is characterized in that it also includes a transmission amplifier component, a power amplifier component, a circulator, a low noise amplifier component and a receiving amplifier component, the transmission amplifier component is electrically connected to the up-conversion component, the up-conversion component is electrically connected to the power amplifier component, the low noise amplifier component is electrically connected to the down-conversion component, the down-conversion component is electrically connected to the receiving amplifier component, and the circulator is electrically connected to the power amplifier component and the low noise amplifier component respectively.

[0009] The circulator is used for switching between receiving signals and sending signals.

[0010] The low noise amplifier component comprises a limiter and a low noise amplifier, and the limiter and the low noise amplifier are electrically connected.

[0011] The limiter is used to reduce high input power and make the low noise amplifier in the linear region.

[0012] The receiving amplifying component comprises two attenuators and two amplifiers, and the attenuators and the amplifiers are electrically connected.

[0013] The attenuator is used to adjust the standing wave at the input port.

[0014] The amplifier is used for link amplification.

[0015] The transmitting amplifying component is used to amplify the intermediate frequency signal. The transmitting amplifying component includes a primary low noise amplifier and a secondary low noise amplifier. The primary low noise amplifier and the secondary low noise amplifier are electrically connected.

[0016] The power amplifier assembly comprises a first-stage driving amplifier and a first-stage power amplifier, and the first-stage driving amplifier and the first-stage power amplifier are electrically connected.

[0017] The down-conversion component includes a first driving amplifier, a first attenuator, a mixer, a second attenuator, a filter, a third attenuator, a second driving amplifier, a fourth attenuator, an image filter and a fifth attenuator. The first driving amplifier is electrically connected to the first attenuator, the mixer is electrically connected to the second attenuator and the fourth attenuator respectively, the filter is electrically connected to the second attenuator and the third attenuator respectively, the third attenuator is electrically connected to the second driving amplifier, and the image filter is electrically connected to the fourth attenuator and the fifth attenuator respectively.

[0018] The beneficial effects of the present invention are mainly manifested in the following aspects: 1. In the present invention, the transmitting amplifier component is electrically connected to the up-conversion component, the up-conversion component is electrically connected to the power amplifier component, the low-noise amplifier component is electrically connected to the down-conversion component, the down-conversion component is electrically connected to the receiving amplifier component, and the circulator is electrically connected to the power amplifier component and the low-noise amplifier component respectively. Compared with the prior art, the modular design of different functions and the combination of the circulator can increase the isolation between the transmitting and receiving links, reduce the debugging cost and time, and enhance the link performance.

[0019] 2. The present invention adopts a circulator to realize the transmitting and receiving switching function. Compared with the ordinary single-pole double-throw switch, the circulator, as a passive device, can withstand high power input and does not need to install a PCB board with power modulation function on the back, thereby greatly reducing the product cost.

[0020] 3. The present invention adopts a circulator to realize the transmission and reception switching function. Compared with the switch chip, it has a higher isolation degree, so that when the entire frequency conversion module is transmitting, the impact on the receiving link can be effectively reduced.

[0021] 4. In the present invention, the low noise amplifier component includes a limiter and a low noise amplifier, and the limiter and the low noise amplifier are electrically connected. The limiter can not only reduce the high input power to ensure that the low noise amplifier is in the linear region, but also further increase the isolation between the transmitting and receiving links.

[0022] 5. In the present invention, the receiving amplification component includes two attenuators and two amplifiers, the attenuators and the amplifiers are electrically connected, and the two attenuators can be used to adjust the input port standing wave and prevent the two amplifiers from self-excitation.

[0023] 6. The present invention divides different functions into modules, which can increase the isolation between channels and reduce the mutual influence between channels. Through comparative testing, self-excitation inspection between amplifiers can be realized, thereby better optimizing the circuit.

[0024] 7. In the present invention, the down-conversion component includes a first driving amplifier, a first attenuator, a mixer, a second attenuator, a filter, a third attenuator, a second driving amplifier, a fourth attenuator, an image frequency filter and a fifth attenuator. The first driving amplifier is electrically connected to the first attenuator, the mixer is electrically connected to the second attenuator and the fourth attenuator respectively, the filter is electrically connected to the second attenuator and the third attenuator respectively, the third attenuator is electrically connected to the second driving amplifier, and the image frequency filter is electrically connected to the fourth attenuator and the fifth attenuator respectively. By adding an image frequency filter before the mixer, the image frequency can be suppressed. At the same time, by arranging the second attenuator and the third attenuator before and after the filter, the standing wave between the passive components can be guaranteed, thereby reducing the transmission loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementations, wherein: Figure 1 It is a structural block diagram of the present invention; Figure 2 It is a structural block diagram of the down-conversion component of the present invention. DETAILED DESCRIPTION

[0026] Example 1 See also Figure 1 A W-band high-transmitting power frequency conversion module comprises an up-conversion component, a down-conversion component, a transmitting amplification component, a power amplifier component, a circulator, a low-noise amplifier component and a receiving amplification component, wherein the transmitting amplification component is electrically connected to the up-conversion component, the up-conversion component is electrically connected to the power amplifier component, the low-noise amplifier component is electrically connected to the down-conversion component, the down-conversion component is electrically connected to the receiving amplification component, and the circulator is electrically connected to the power amplifier component and the low-noise amplifier component, respectively.

[0027] This embodiment is the most basic implementation method. The transmitting amplifier component is electrically connected to the up-conversion component, the up-conversion component is electrically connected to the power amplifier component, the low-noise amplifier component is electrically connected to the down-conversion component, the down-conversion component is electrically connected to the receiving amplifier component, and the circulator is electrically connected to the power amplifier component and the low-noise amplifier component respectively. Compared with the prior art, modularizing the different functions and combining the circulator can increase the isolation between the transmitting and receiving links, reduce the debugging cost and time, and enhance the link performance.

[0028] Example 2 See also Figure 1 A W-band high-transmitting power frequency conversion module comprises an up-conversion component, a down-conversion component, a transmitting amplification component, a power amplifier component, a circulator, a low-noise amplifier component and a receiving amplification component, wherein the transmitting amplification component is electrically connected to the up-conversion component, the up-conversion component is electrically connected to the power amplifier component, the low-noise amplifier component is electrically connected to the down-conversion component, the down-conversion component is electrically connected to the receiving amplification component, and the circulator is electrically connected to the power amplifier component and the low-noise amplifier component, respectively.

[0029] Preferably, the circulator is used to switch between receiving signals and sending signals.

[0030] The low noise amplifier component comprises a limiter and a low noise amplifier, and the limiter and the low noise amplifier are electrically connected.

[0031] This embodiment is a preferred implementation method, which uses a circulator to realize the transmit and receive switching function. Compared with the ordinary single-pole double-throw switch, the circulator, as a passive device, can withstand high power input and does not need to install a PCB board with power modulation function on the back, thereby greatly reducing product costs.

[0032] Example 3 See also Figure 1 A W-band high-transmitting power frequency conversion module comprises an up-conversion component, a down-conversion component, a transmitting amplification component, a power amplifier component, a circulator, a low-noise amplifier component and a receiving amplification component, wherein the transmitting amplification component is electrically connected to the up-conversion component, the up-conversion component is electrically connected to the power amplifier component, the low-noise amplifier component is electrically connected to the down-conversion component, the down-conversion component is electrically connected to the receiving amplification component, and the circulator is electrically connected to the power amplifier component and the low-noise amplifier component, respectively.

[0033] The circulator is used for switching between receiving signals and sending signals.

[0034] The low noise amplifier component comprises a limiter and a low noise amplifier, and the limiter and the low noise amplifier are electrically connected.

[0035] The limiter is used to reduce high input power and make the low noise amplifier in the linear region.

[0036] This embodiment is another preferred implementation method, which uses a circulator to implement the transmit-receive switching function. Compared with the switch chip, it has a higher isolation degree, so that when the entire frequency conversion module is transmitting, the impact on the receiving link can be effectively reduced.

[0037] The low noise amplifier component includes a limiter and a low noise amplifier. The limiter and the low noise amplifier are electrically connected. The limiter can not only reduce the high input power to ensure that the low noise amplifier is in the linear region, but also further increase the isolation between the transmit and receive links.

[0038] Example 4 See also Figure 1 A W-band high-transmitting power frequency conversion module comprises an up-conversion component, a down-conversion component, a transmitting amplification component, a power amplifier component, a circulator, a low-noise amplifier component and a receiving amplification component, wherein the transmitting amplification component is electrically connected to the up-conversion component, the up-conversion component is electrically connected to the power amplifier component, the low-noise amplifier component is electrically connected to the down-conversion component, the down-conversion component is electrically connected to the receiving amplification component, and the circulator is electrically connected to the power amplifier component and the low-noise amplifier component, respectively.

[0039] The circulator is used for switching between receiving signals and sending signals.

[0040] The low noise amplifier component comprises a limiter and a low noise amplifier, and the limiter and the low noise amplifier are electrically connected.

[0041] The limiter is used to reduce high input power and make the low noise amplifier in the linear region.

[0042] Further preferably, the receiving amplification component includes two attenuators and two amplifiers, and the attenuators and the amplifiers are electrically connected.

[0043] The attenuator is used to adjust the standing wave at the input port.

[0044] The amplifier is used for link amplification.

[0045] This embodiment is another preferred implementation mode. The receiving amplification component includes two attenuators and two amplifiers. The attenuators and the amplifiers are electrically connected. The two attenuators can adjust the input port standing wave and prevent the two amplifiers from self-excitation.

[0046] Example 5 See also Figure 1 A W-band high-transmitting power frequency conversion module comprises an up-conversion component, a down-conversion component, a transmitting amplification component, a power amplifier component, a circulator, a low-noise amplifier component and a receiving amplification component, wherein the transmitting amplification component is electrically connected to the up-conversion component, the up-conversion component is electrically connected to the power amplifier component, the low-noise amplifier component is electrically connected to the down-conversion component, the down-conversion component is electrically connected to the receiving amplification component, and the circulator is electrically connected to the power amplifier component and the low-noise amplifier component, respectively.

[0047] The circulator is used for switching between receiving signals and sending signals.

[0048] The low noise amplifier component comprises a limiter and a low noise amplifier, and the limiter and the low noise amplifier are electrically connected.

[0049] The limiter is used to reduce high input power and make the low noise amplifier in the linear region.

[0050] The receiving amplifying component comprises two attenuators and two amplifiers, and the attenuators and the amplifiers are electrically connected.

[0051] The attenuator is used to adjust the standing wave at the input port.

[0052] The amplifier is used for link amplification.

[0053] The transmitting amplifying component is used to amplify the intermediate frequency signal. The transmitting amplifying component includes a primary low noise amplifier and a secondary low noise amplifier. The primary low noise amplifier and the secondary low noise amplifier are electrically connected.

[0054] The power amplifier assembly comprises a first-stage driving amplifier and a first-stage power amplifier, and the first-stage driving amplifier and the first-stage power amplifier are electrically connected.

[0055] This embodiment is another preferred implementation method. Modular division of different functions can increase the isolation between channels and reduce the mutual influence between channels. Through comparative testing, self-excitation inspection between amplifiers can be achieved, thereby better optimizing the circuit.

[0056] Example 6 See also Figure 1 and Figure 2A W-band high-transmitting power frequency conversion module comprises an up-conversion component, a down-conversion component, a transmitting amplification component, a power amplifier component, a circulator, a low-noise amplifier component and a receiving amplification component, wherein the transmitting amplification component is electrically connected to the up-conversion component, the up-conversion component is electrically connected to the power amplifier component, the low-noise amplifier component is electrically connected to the down-conversion component, the down-conversion component is electrically connected to the receiving amplification component, and the circulator is electrically connected to the power amplifier component and the low-noise amplifier component, respectively.

[0057] The circulator is used for switching between receiving signals and sending signals.

[0058] The low noise amplifier component comprises a limiter and a low noise amplifier, and the limiter and the low noise amplifier are electrically connected.

[0059] The limiter is used to reduce high input power and make the low noise amplifier in the linear region.

[0060] The receiving amplifying component comprises two attenuators and two amplifiers, and the attenuators and the amplifiers are electrically connected.

[0061] The attenuator is used to adjust the standing wave at the input port.

[0062] The amplifier is used for link amplification.

[0063] The transmitting amplifying component is used to amplify the intermediate frequency signal. The transmitting amplifying component includes a primary low noise amplifier and a secondary low noise amplifier. The primary low noise amplifier and the secondary low noise amplifier are electrically connected.

[0064] The power amplifier assembly comprises a first-stage driving amplifier and a first-stage power amplifier, and the first-stage driving amplifier and the first-stage power amplifier are electrically connected.

[0065] Further preferably, the down-conversion component includes a first driving amplifier, a first attenuator, a mixer, a second attenuator, a filter, a third attenuator, a second driving amplifier, a fourth attenuator, an image frequency filter and a fifth attenuator, the first driving amplifier is electrically connected to the first attenuator, the mixer is electrically connected to the second attenuator and the fourth attenuator, respectively, the filter is electrically connected to the second attenuator and the third attenuator, respectively, the third attenuator is electrically connected to the second driving amplifier, and the image frequency filter is electrically connected to the fourth attenuator and the fifth attenuator, respectively.

[0066] This embodiment is the best implementation method. The down-conversion component includes a first driving amplifier, a first attenuator, a mixer, a second attenuator, a filter, a third attenuator, a second driving amplifier, a fourth attenuator, an image frequency filter and a fifth attenuator. The first driving amplifier is electrically connected to the first attenuator, the mixer is electrically connected to the second attenuator and the fourth attenuator respectively, the filter is electrically connected to the second attenuator and the third attenuator respectively, the third attenuator is electrically connected to the second driving amplifier, and the image frequency filter is electrically connected to the fourth attenuator and the fifth attenuator respectively. By adding an image frequency filter before the mixer, the image frequency can be suppressed. At the same time, by arranging the second attenuator and the third attenuator before and after the filter, the standing wave between the passive components can be guaranteed, thereby reducing the transmission loss.

[0067] The up-conversion component of the present invention has the same architecture as the down-conversion component. The intermediate frequency is the input port, which is input to the mixer after being filtered by the attenuator and the mirror filter, up-converted to the radio frequency frequency by the mixer, and then filtered out the spurious and harmonic signals through the filter and output to the radio frequency port.

[0068] By arranging a driving amplifier and a first attenuator at the local oscillator input port, it is possible to ensure that appropriate power is input to the local oscillator port of the mixer, thereby reducing frequency conversion loss.

[0069] In terms of power supply design, a power modulation printed circuit board is installed on the back of the active component, and the power input is the side of the cavity wall; the chip power supply is transmitted to the chip capacitor through the insulator needle, and the chip capacitor can reduce the ripple, and then transmitted to the bare chip pad through gold wire bonding. This power supply method can reduce the difficulty of layout and improve the compatibility of components; when the link needs to be modified, only the device on the micro-assembly side needs to be changed, and there is no need to change the power board.

[0070] Power amplifier assembly: It consists of a first-stage driver amplifier and a first-stage power amplifier. An attenuator is arranged between the first-stage driver amplifier and the first-stage power amplifier to prevent self-excitation.

[0071] Since the power amplifier components consume a lot of power, the power amplifier components are placed at the bottom of the whole machine cavity and heat sinks are added to ensure heat dissipation of the power amplifier components, which is convenient for thermal simulation. In addition, the power supply port of the first-stage power amplifier adopts multi-channel power supply and multiple gold wires or gold belts to ensure that the current passing through is not too large to prevent melting. At the same time, the component design makes the fixed position more flexible, thereby reducing the impact of high temperature caused by high power consumption.

Claims

1. A W-band high transmission power frequency conversion module, comprising an up-conversion component and a down-conversion component, characterized in that: It also includes a transmitting amplification component, a power amplifier component, a circulator, a low noise amplifier component and a receiving amplification component. The transmitting amplification component is electrically connected to the up-conversion component, the up-conversion component is electrically connected to the power amplifier component, the low noise amplifier component is electrically connected to the down-conversion component, the down-conversion component is electrically connected to the receiving amplification component, and the circulator is electrically connected to the power amplifier component and the low noise amplifier component respectively.

2. A W-band high transmission power frequency conversion module according to claim 1, characterized in that: The circulator is used for switching between receiving signals and sending signals.

3. A W-band high transmission power frequency conversion module according to claim 1, characterized in that: The low noise amplifier component comprises a limiter and a low noise amplifier, and the limiter and the low noise amplifier are electrically connected.

4. A W-band high transmission power frequency conversion module according to claim 3, characterized in that: The limiter is used to reduce high input power and make the low noise amplifier in the linear region.

5. A W-band high transmission power frequency conversion module according to claim 1, characterized in that: The receiving amplifying component comprises two attenuators and two amplifiers, and the attenuators and the amplifiers are electrically connected.

6. A W-band high transmission power frequency conversion module according to claim 5, characterized in that: The attenuator is used to adjust the standing wave at the input port.

7. A W-band high transmission power frequency conversion module according to claim 5, characterized in that: The amplifier is used for link amplification.

8. The W-band high transmission power frequency conversion module according to claim 1, characterized in that: The transmitting amplifying component is used to amplify the intermediate frequency signal. The transmitting amplifying component includes a primary low noise amplifier and a secondary low noise amplifier. The primary low noise amplifier and the secondary low noise amplifier are electrically connected.

9. The W-band high transmission power frequency conversion module according to claim 1, characterized in that: The power amplifier assembly comprises a first-stage driving amplifier and a first-stage power amplifier, and the first-stage driving amplifier and the first-stage power amplifier are electrically connected.

10. The W-band high transmission power frequency conversion module according to claim 1, characterized in that: The down-conversion component includes a first driving amplifier, a first attenuator, a mixer, a second attenuator, a filter, a third attenuator, a second driving amplifier, a fourth attenuator, an image filter and a fifth attenuator. The first driving amplifier is electrically connected to the first attenuator, the mixer is electrically connected to the second attenuator and the fourth attenuator respectively, the filter is electrically connected to the second attenuator and the third attenuator respectively, the third attenuator is electrically connected to the second driving amplifier, and the image filter is electrically connected to the fourth attenuator and the fifth attenuator respectively.

Images