CN212278204U - Millimeter wave broadband gain self-balancing low-power-consumption amplifier capable of switching power supply from top to bottom - Google Patents
Millimeter wave broadband gain self-balancing low-power-consumption amplifier capable of switching power supply from top to bottom Download PDFInfo
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Abstract
The utility model discloses a can switch power supply millimeter wave broadband gain from balanced low-power consumption amplifier from top to bottom adopts parallelly connected negative feedback structure to combine the multiplexing structure of electric current to widened the bandwidth, and realized the gain in the ultra wide band within range from balanced, and the equilibrium volume can reach 2 ~ 3dB, has realized the low-power consumption simultaneously. And simultaneously, the utility model discloses two power feed ends at output matching network have set up a power filtering structure respectively, and when the one end feed, the other end keeps unsettled changeable power supply about can realizing, and convenient to use is favorable to the overall arrangement of ultra wide band millimeter wave amplifier chip place microwave subassembly.
Description
Technical Field
The utility model belongs to the technical field of microwave monolithic integrated circuit, concretely relates to can switch from top to bottom power supply millimeter wave broadband gain from balanced low-power consumption amplifier's design.
Background
A microwave monolithic integrated circuit, MMIC for short, is a microwave circuit with active and passive components on the same semiconductor substrate. The system has the characteristics of small volume, high stability, good consistency, small parasitic parameters and the like, and becomes the most attractive choice for military electronic and civil communication systems. The ultra-wideband millimeter wave amplifier chip is a key product of electronic equipment in multiple fields due to the advantages of wide bandwidth, large communication capacity and the like, and has wide application in the fields of precise guidance, radar communication, aerospace measurement and control, satellite communication and the like.
With the rapid development of semiconductor technology and the increase of chip operating frequency, the power consumption of the chip increases rapidly, which in turn will lead to the increase of chip heat generation and the decrease of reliability, and thus the power consumption has become an important consideration in the design of integrated circuits. In order to make the product more competitive, the requirement of the chip design in the industry has been shifted from the pure pursuit of high performance and small area to the comprehensive requirement of performance, area and power consumption. The chip is used as a core component of the microwave system, and the low-power design of the chip has important significance for reducing the power consumption of the whole system.
The microwave system often encounters the problem that the loss is increased along with the increase of the frequency, and the gain flatness of the broadband is obtained by increasing the loss of the low end of the frequency band through additionally adding an equalizing device. This approach tends to reduce receive sensitivity, increase power consumption, and increase system complexity. This problem can be effectively solved if the amplifier we use in microwave systems has a gain self-equalizing property, i.e. the gain increases with increasing frequency. The main obstacle in designing broadband amplifiers today is the gain-bandwidth product of the active device. The gain of any active device has a gradual drop characteristic at the high frequency end, and in addition to the forward gain S21 being reduced, the reverse gain S12 is increased, which will further reduce the overall gain of the amplifier and increase the likelihood that the device will enter an oscillating state. Especially in the millimeter wave band, it is more difficult to achieve gain self-equalization.
Various components are often involved in the microwave assembly, so the layout of the components in the assembly is also very important, the size of the assembly is increased due to improper layout, and the problems of electromagnetic interference and the like also occur. The flexibility of component layout would be greatly increased if component power supply could be facilitated in the chip design.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can switch power supply millimeter wave broadband gain from balanced low-power consumption amplifier from top to bottom, under the prerequisite that does not influence ultra wide band millimeter wave amplifier chip performance, can switch nimble power supply from top to bottom to can realize the gain in the ultra wide band scope from the low-power consumption of balanced and chip.
The technical scheme of the utility model is that: a millimeter wave broadband gain self-balancing low-power-consumption amplifier capable of switching power supply up and down comprises a transistor M1 and a transistor M2, wherein the grid electrode of the transistor M1 is respectively connected with the output end of an input matching network and one end of a first parallel negative feedback network through a microstrip line TL4, the drain electrode of the transistor M1 is respectively connected with the other end of the first parallel negative feedback network and the input end of a current multiplexing network through a microstrip line TL5, the source electrode of the transistor M6 is connected with a M1 tube self-bias network, and the input end of the input matching network is the radio frequency RFI input end N of the low-power-; the grid of the transistor M2 is connected with the output end of the current multiplexing network, the source of the transistor is respectively connected with the current multiplexing network and the M2 tube radio frequency to ground network through a microstrip line TL13, the drain of the transistor is respectively connected with the input end of the output matching network and one end of the second parallel negative feedback network through a microstrip line TL14, the other end of the second parallel negative feedback network is connected with the grid of the transistor M2 through the current multiplexing network, the two feed ends of the output matching network are respectively connected with the power supply VDD through the first power supply filter network and the second power supply filter network, and the output end of the output matching network is the radio frequency output end RFOUT of the low power consumption amplifier.
Further, the input matching network comprises a capacitor C1, a microstrip line TL1 and a grounded microstrip line TL2, one end of the capacitor C1 is an input end of the input matching network, the other end of the capacitor C1 is connected with one end of the microstrip line TL1, and the other end of the microstrip line TL1 is connected with a grounded microstrip line TL2 and serves as an output end of the input matching network.
Furthermore, the M1 tube self-bias network includes a ground resistor R1 and a ground capacitor C2, and both the ground resistor R1 and the ground capacitor C2 are connected to the source of the transistor M1 through a microstrip line TL 6.
Further, the first parallel negative feedback network comprises a resistor R2, a microstrip line TL3 and a capacitor C3 which are connected in sequence, wherein one end of the resistor R2 is connected with one end of the microstrip line TL3, the other end of the resistor R2 is connected with the gate of the transistor M1 through the microstrip line TL4, one end of the capacitor C3 is connected with the other end of the microstrip line TL3, and the other end of the capacitor C3 is connected with the drain of the transistor M1 through the microstrip line TL 5.
Further, the current multiplexing network comprises a microstrip line TL7, a capacitor C4, a microstrip line TL9, a microstrip line TL10 and a microstrip line TL11 which are connected in sequence, wherein one end of the microstrip line TL7 is connected with the capacitor C4, and the other end thereof is connected with one end of the microstrip line TL8 and serves as an input end of the current multiplexing network; the connecting node of the microstrip line TL9 and the microstrip line TL10 is further connected with one end of a resistor R4, the other end of the resistor R4 is respectively connected with one end of a resistor R3, the other end of the microstrip line TL8, one end of a microstrip line TL12, a grounding resistor R5 and a grounding capacitor C6, the other end of a resistor R3 is connected with the grounding capacitor C8, and the other end of the microstrip line TL12 is connected with the source electrode of the transistor M2 through the microstrip line TL 13; one end of the microstrip line TL11 is connected to the microstrip line TL10, and the other end thereof serves as an output end of the current multiplexing network.
Further, the second parallel negative feedback network comprises a resistor R6, a microstrip line TL15 and a capacitor C5 which are connected in sequence, wherein one end of the resistor R6 is connected with one end of the microstrip line TL15, the other end of the resistor R6 is connected with the gate of the transistor M2 through the microstrip line TL11, one end of the capacitor C5 is connected with the other end of the microstrip line TL15, and the other end of the capacitor C5 is connected with the drain of the transistor M2 through the microstrip line TL 14.
Further, the M2 tube rf-to-ground network includes a grounded capacitor C7, and the grounded capacitor C7 is connected to the source of the transistor M2 through a microstrip line TL 13.
Further, the output matching network comprises a microstrip line TL16, one end of the microstrip line TL16 is connected to one end of the microstrip line TL18 and one end of the microstrip line TL19 respectively, and serves as an input end of the output matching network, the other end of the microstrip line TL16 is connected to one end of a capacitor C9 and an open-circuit microstrip line TL17 respectively, and the other end of the capacitor C9 serves as an output end of the output matching network; the other end of the microstrip line TL18 is used as a first feed end of the output matching network, and the other end of the microstrip line TL19 is used as a second feed end of the output matching network.
Further, the first power filter network comprises a resistor R7, one end of the resistor R7 is connected to the ground capacitor C10, and the other end of the resistor R7 is connected to the ground capacitor C11, the power supply VDD, and the first feeding end of the output matching network.
Further, the second power filter network comprises a resistor R8, one end of the resistor R8 is connected to the ground capacitor C12, and the other end of the resistor R8 is connected to the ground capacitor C13, the power supply VDD, and the second feeding end of the output matching network.
The utility model has the advantages that:
(1) the utility model discloses a parallelly connected negative feedback structure combines the multiplexing structure of electric current to widened the bandwidth, and realized the gain in the ultra wide band within range from balanced, and the equilibrium volume can reach 2 ~ 3dB, realized the low-power consumption simultaneously.
(2) The utility model discloses in, first order transistor M1 and second level transistor M2 have all used parallelly connected negative feedback structure to can increase the gain and from the equilibrium.
(3) The utility model discloses a current multiplexing structure has improved the output impedance matching of amplifier, has widened the frequency channel, makes the amplifier can realize higher gain and higher reverse isolation in the frequency range of broad, can make the gain realize more easily from the equilibrium like this, and current two-stage cascade structure is compared to current multiplexing structure simultaneously, has reduced the consumption of circuit under the circumstances of guaranteeing the gain.
(4) The utility model discloses two power feed ends at output matching network have set up a power filtering structure respectively, and when the one end feed, the other end keeps unsettled changeable power supply about can realizing, and convenient to use is favorable to the overall arrangement of ultra wide band millimeter wave amplifier chip place microwave subassembly.
Drawings
Fig. 1 shows that the utility model provides a pair of can switch power supply millimeter wave broadband gain from balanced low-power consumption amplifier circuit schematic from top to bottom.
Detailed Description
Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It is to be understood that the embodiments shown and described in the drawings are merely exemplary and are intended to illustrate the principles and spirit of the invention, not to limit the scope of the invention.
The embodiment of the utility model provides a can switch power supply millimeter wave broadband gain from balanced low-power consumption amplifier from top to bottom, as shown in fig. 1, including transistor M1 and transistor M2, transistor M1's grid passes through microstrip line TL4 and is connected with the output of input matching network and the one end of first parallel negative feedback network respectively, its drain electrode passes through microstrip line TL5 and is connected with the other end of first parallel negative feedback network and the input of current reuse network respectively, its source electrode passes through microstrip line TL6 and M1 pipe auto-bias network connection, the input of input matching network is low-power consumption amplifier's radio frequency input RFIN; the grid of the transistor M2 is connected with the output end of the current multiplexing network, the source of the transistor is respectively connected with the current multiplexing network and the M2 tube radio frequency to ground network through a microstrip line TL13, the drain of the transistor is respectively connected with the input end of the output matching network and one end of the second parallel negative feedback network through a microstrip line TL14, the other end of the second parallel negative feedback network is connected with the grid of the transistor M2 through the current multiplexing network, the two feed ends of the output matching network are respectively connected with the power supply VDD through the first power supply filter network and the second power supply filter network, and the output end of the output matching network is the radio frequency output end RFOUT of the low power consumption amplifier.
The embodiment of the utility model provides an in, input matching network includes electric capacity C1, microstrip line TL1 and ground connection microstrip line TL2, and electric capacity C1's one end is input matching network's input, and its other end is connected with microstrip line TL 1's one end, and microstrip line TL 1's the other end is connected with ground connection microstrip line TL2 to as input matching network's output.
The embodiment of the utility model provides an in, M1 pipe self-bias network includes ground resistance R1 and ground capacitance C2, and ground resistance R1 and ground capacitance C2 all are connected with transistor M1's source through microstrip line TL 6.
The embodiment of the utility model provides an in, first parallel negative feedback network is including the resistance R2, microstrip line TL3 and the electric capacity C3 that connect gradually, resistance R2's one end is connected with microstrip line TL 3's one end, its other end passes through microstrip line TL4 and is connected with transistor M1's gate, electric capacity C3's one end is connected with microstrip line TL 3's the other end, its other end passes through microstrip line TL5 and is connected with transistor M1's drain electrode.
In the embodiment of the present invention, the current multiplexing network includes microstrip line TL7, capacitor C4, microstrip line TL9, microstrip line TL10 and microstrip line TL11 connected in sequence, one end of microstrip line TL7 is connected with capacitor C4, and the other end thereof is connected with one end of microstrip line TL8 and serves as an input end of the current multiplexing network; the connecting node of the microstrip line TL9 and the microstrip line TL10 is further connected with one end of a resistor R4, the other end of the resistor R4 is respectively connected with one end of a resistor R3, the other end of the microstrip line TL8, one end of a microstrip line TL12, a grounding resistor R5 and a grounding capacitor C6, the other end of a resistor R3 is connected with the grounding capacitor C8, and the other end of the microstrip line TL12 is connected with the source electrode of the transistor M2 through the microstrip line TL 13; one end of the microstrip line TL11 is connected to the microstrip line TL10, and the other end thereof serves as an output end of the current multiplexing network.
The embodiment of the utility model provides an in, parallelly connected negative feedback network of second is including the resistance R6, microstrip line TL15 and the electric capacity C5 that connect gradually, resistance R6's one end is connected with microstrip line TL 15's one end, its other end passes through microstrip line TL11 and is connected with transistor M2's gate, electric capacity C5's one end is connected with microstrip line TL 15's the other end, its other end passes through microstrip line TL14 and is connected with transistor M2's drain electrode.
In the embodiment of the utility model provides an in, M2 pipe radio frequency to ground network includes grounded capacitance C7, and grounded capacitance C7 passes through microstrip line TL13 and is connected with transistor M2's source electrode.
In the embodiment of the present invention, the output matching network includes microstrip line TL16, one end of microstrip line TL16 is connected to one end of microstrip line TL18 and one end of microstrip line TL19 respectively, and serves as an input end of the output matching network, the other end of the output matching network is connected to one end of capacitor C9 and open-circuit microstrip line TL17 respectively, and the other end of capacitor C9 serves as an output end of the output matching network; the other end of the microstrip line TL18 is used as a first feed end of the output matching network, and the other end of the microstrip line TL19 is used as a second feed end of the output matching network.
The embodiment of the utility model provides an in, first power filter network includes resistance R7, and resistance R7's one end is connected with ground capacitance C10, and its other end is connected with ground capacitance C11, power VDD and the first feed end of output matching network respectively.
The embodiment of the utility model provides an in, second power filter network includes resistance R8, and resistance R8's one end is connected with ground capacitance C12, and its other end is connected with ground capacitance C13, power VDD and output matching network's second feed end respectively.
The embodiment of the utility model provides an in, millimeter wave broadband gain is 18 ~ 40GHz from balanced low power consumption amplifier's working frequency channel, and the gain is 8.8 ~ 11dB to possess 2.2dB positive slope, keep apart the size and be 24dB, noise figure is 4dB, and output P _1 is 13dBm, and power consumption is +5V 33 mA.
The working principle and process of the present invention will be described in detail with reference to fig. 1 below:
as shown in figure 1, the utility model discloses a parallelly connected negative feedback structure combines the multiplexing structure of electric current to widened the bandwidth, and realized gain self-balancing in the ultra wide band within range, and the equilibrium volume can reach 2 ~ 3dB, realized the low-power consumption simultaneously.
The basic circuit form of the parallel negative feedback network is to load a resistor between a drain and a grid to form a negative feedback loop, and the negative feedback loop has the function of obtaining the positive gain slope and better input and output matching. In a parallel negative feedback configuration, resistor R is a critical feedback element, the value of which determines the basic gain and bandwidth; the microstrip line TL introduces a certain frequency dependence to the feedback loop: at a low frequency point, the microstrip line TL has small function, the resistor R controls the gain, and at a high frequency section, the reactance of the microstrip line TL is increased, so that the negative feedback depth is reduced. In the embodiment of the present invention, the first stage transistor M1 and the second stage transistor M2 both use a parallel negative feedback structure, so that the gain self-equalization can be increased.
The current multiplexing network improves the output impedance matching of the amplifier, widens the frequency band, and enables the amplifier to realize higher gain and higher reverse isolation in a wider frequency range, thereby enabling the gain self-equalization to be realized more easily. Meanwhile, as the operating frequency of the chip is increased, the power consumption of the transistor is also rapidly increased. The two transistors M1 and M2 are of a current multiplexing structure, and M1 and M2 adopt tubes with the same size. The microstrip line TL7, the capacitor C4, the microstrip line TL9, the microstrip line TL10 and the microstrip line TL11 are radio-frequency paths of the current multiplexing network; microstrip line TL8 and microstrip line TL12 are dc paths of the current multiplexing network, that is, the drain voltage of transistor M1 is supplied via microstrip line TL12 and microstrip line TL8 by the source voltage of transistor M2; the gate voltage of the transistor M2 is the source voltage of the transistor M2, is supplied from the resistor R4 after being divided by the microstrip line TL12 and the resistor R5; the grounding capacitor C6 and the grounding capacitor C8 are both bypass capacitors. The microstrip line TL8 is used to provide a high impedance path to prevent the rf signal in a desired frequency band from passing through, so that the rf signal enters from the gate of the transistor M1, enters from the capacitor C4 into the gate of the transistor M2, and finally flows out from the drain of the transistor M2, so that M1 and M2 are both common source amplification structures, and the gain is equivalent to a two-stage cascade structure. However, for direct current, the drain of the M1 transistor is directly connected to the source of the M2 transistor, so that the direct current power consumption is unchanged relative to a single-stage common source circuit. Therefore, compared with a two-stage cascade structure, the current multiplexing technology reduces the power consumption of the circuit under the condition of ensuring the gain.
At the power supply feed end, in order to realize the up-and-down switchable power supply, the up-and-down transmission microstrip lines TL18 and TL19 and the filter circuit branch are all participated in the output matching network. In order to realize power supply at any end without affecting the output performance of the amplifier chip, the microstrip lines and the capacitors in the upper and lower branches have the same size, that is, TL18 ═ TL19, R7 ═ R8, C10 ═ C12, and C11 ═ C13 in fig. 1. Therefore, when one end feeds power, the other end is suspended, the use is convenient, and the layout of the microwave assembly where the amplifier chip is located is facilitated.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.
Claims (10)
1. A millimeter wave broadband gain self-balancing low-power-consumption amplifier capable of switching power supply up and down is characterized by comprising a transistor M1 and a transistor M2, wherein the grid of the transistor M1 is respectively connected with the output end of an input matching network and one end of a first parallel negative feedback network through a microstrip line TL4, the drain of the transistor M1 is respectively connected with the other end of the first parallel negative feedback network and the input end of a current multiplexing network through a microstrip line TL5, the source of the transistor M6 is connected with a M1 tube self-bias network, and the input end of the input matching network is the radio-frequency input end RFIN of the low-power-consumption amplifier; the grid of the transistor M2 is connected with the output end of the current multiplexing network, the source of the transistor is respectively connected with the current multiplexing network and the M2 tube radio frequency to ground network through a microstrip line TL13, the drain of the transistor is respectively connected with the input end of the output matching network and one end of a second parallel negative feedback network through a microstrip line TL14, the other end of the second parallel negative feedback network is connected with the grid of the transistor M2 through the current multiplexing network, two feed ends of the output matching network are respectively connected with a power supply VDD through a first power supply filter network and a second power supply filter network, and the output end of the output matching network is the radio frequency output end RFOUT of the low power consumption amplifier.
2. The millimeter wave broadband gain self-balanced low-power-consumption amplifier capable of switching power supply up and down according to claim 1, wherein the input matching network comprises a capacitor C1, a microstrip line TL1 and a grounded microstrip line TL2, one end of the capacitor C1 is an input end of the input matching network, the other end of the capacitor C1 is connected with one end of the microstrip line TL1, and the other end of the microstrip line TL1 is connected with a grounded microstrip line TL2 and serves as an output end of the input matching network.
3. The millimeter wave broadband gain self-balanced low-power-consumption amplifier capable of switching power supply up and down according to claim 1, wherein the M1 tube self-bias network comprises a ground resistor R1 and a ground capacitor C2, and the ground resistor R1 and the ground capacitor C2 are both connected with a source of a transistor M1 through a microstrip line TL 6.
4. The millimeter wave broadband gain self-balanced low-power-consumption amplifier capable of switching power supply up and down according to claim 1, wherein the first parallel negative feedback network comprises a resistor R2, a microstrip line TL3 and a capacitor C3 which are connected in sequence, one end of the resistor R2 is connected with one end of the microstrip line TL3, the other end of the resistor R2 is connected with the gate of the transistor M1 through the microstrip line TL4, one end of the capacitor C3 is connected with the other end of the microstrip line TL3, and the other end of the capacitor C3 is connected with the drain of the transistor M1 through the microstrip line TL 5.
5. The millimeter wave broadband gain self-balanced low-power-consumption amplifier capable of switching power supply up and down according to claim 1, wherein the current multiplexing network comprises a microstrip line TL7, a capacitor C4, a microstrip line TL9, a microstrip line TL10 and a microstrip line TL11 which are connected in sequence, one end of the microstrip line TL7 is connected with the capacitor C4, and the other end of the microstrip line TL8 is connected with one end of the microstrip line TL10 and serves as an input end of the current multiplexing network; the connecting node of the microstrip line TL9 and the microstrip line TL10 is further connected with one end of a resistor R4, the other end of the resistor R4 is respectively connected with one end of a resistor R3, the other end of the microstrip line TL8, one end of a microstrip line TL12, a grounding resistor R5 and a grounding capacitor C6, the other end of the resistor R3 is connected with the grounding capacitor C8, and the other end of the microstrip line TL12 is connected with the source electrode of the transistor M2 through the microstrip line TL 13; one end of the microstrip line TL11 is connected with the microstrip line TL10, and the other end of the microstrip line TL11 is used as the output end of the current multiplexing network.
6. The millimeter wave broadband gain self-balanced low-power-consumption amplifier capable of switching power supply up and down according to claim 5, wherein the second parallel negative feedback network comprises a resistor R6, a microstrip line TL15 and a capacitor C5 which are connected in sequence, one end of the resistor R6 is connected with one end of the microstrip line TL15, the other end of the resistor R6 is connected with the gate of the transistor M2 through the microstrip line TL11, one end of the capacitor C5 is connected with the other end of the microstrip line TL15, and the other end of the capacitor C5 is connected with the drain of the transistor M2 through the microstrip line TL 14.
7. The millimeter wave broadband gain self-balanced low-power-consumption amplifier capable of switching power supply up and down according to claim 1, wherein the M2 tube radio frequency to ground network comprises a grounded capacitor C7, and the grounded capacitor C7 is connected with the source of the transistor M2 through a microstrip line TL 13.
8. The millimeter wave broadband gain self-balanced low-power-consumption amplifier capable of switching power supply up and down according to claim 1, wherein the output matching network comprises a microstrip line TL16, one end of the microstrip line TL16 is respectively connected with one end of a microstrip line TL18 and one end of a microstrip line TL19 and serves as an input end of the output matching network, the other end of the microstrip line TL16 is respectively connected with one end of a capacitor C9 and an open-circuit microstrip line TL17, and the other end of the capacitor C9 serves as an output end of the output matching network; the other end of the microstrip line TL18 is used as a first feed end of the output matching network, and the other end of the microstrip line TL19 is used as a second feed end of the output matching network.
9. The up-down switching power supply millimeter wave broadband gain self-equalization low power consumption amplifier according to claim 8, wherein the first power supply filter network comprises a resistor R7, one end of the resistor R7 is connected with a grounding capacitor C10, and the other end of the resistor R7 is connected with a grounding capacitor C11, a power supply VDD and a first feeding end of the output matching network.
10. The up-down switchable millimeter wave broadband gain self-balanced low power consumption amplifier according to claim 8, wherein the second power filter network comprises a resistor R8, one end of the resistor R8 is connected to a ground capacitor C12, and the other end of the resistor R8 is connected to a ground capacitor C13, a power supply VDD and a second feeding end of the output matching network.
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| CN111669138A (en) * | 2020-05-28 | 2020-09-15 | 成都嘉纳海威科技有限责任公司 | A self-equalizing low-power amplifier with millimeter-wave broadband gain that can be switched up and down |
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Cited By (1)
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| CN111669138A (en) * | 2020-05-28 | 2020-09-15 | 成都嘉纳海威科技有限责任公司 | A self-equalizing low-power amplifier with millimeter-wave broadband gain that can be switched up and down |
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