CN-120896554-B - Two-dimensional space multiplexing synthetic power amplifier circuit

CN120896554BCN 120896554 BCN120896554 BCN 120896554BCN-120896554-B

Abstract

The invention relates to a two-dimensional space multiplexing synthesized power amplifier circuit which comprises an input power division network, a two-dimensional space multiplexing module and an output synthesis network, wherein the input power division network distributes signals to each two-dimensional space multiplexing module for signal amplification, the two-dimensional space multiplexing module is used for placing adjacent multiplexing amplifying units or transmitting units in the same area, and then m multiplied by N amplifying units or transmitting units are realized in N paths of areas, so that the power synthesis is miniaturized, the signals are sent to the output synthesis network, and the output synthesis network is connected with the output of each two-dimensional space multiplexing module for power synthesis and then outputting the output signals. Compared with the conventional power synthesis technical scheme, the invention has more compact area, can realize the increase and doubling of the output power under the same area, or can save 50% of the area under the same output power, can greatly reduce the realization cost of on-chip power synthesis, and ensures that the design is simpler and more convenient and the design efficiency is improved by the mutual decoupling of the parameters of the embedded transformer and the peripheral transformer.

Inventors

Yi Yuanzhang
LIU MIN

Assignees

成都灵童半导体有限公司

Dates

Publication Date: 20260508
Application Date: 20250730

Claims (5)

1. The two-dimensional space multiplexing synthesized power amplifier circuit is characterized by comprising an input power division network, N paths of two-dimensional space multiplexing modules and an output synthesis network, wherein the multiplexing two-dimensional space multiplexing modules are connected in parallel between the input power division network and the output synthesis network; the input power division network is configured to distribute signals to each path of two-dimensional space multiplexing module for signal amplification; The two-dimensional space multiplexing module is configured to place traditional adjacent multipath amplifying units or transmitting units in the same area, and then m multiplied by N paths of amplifying units or transmitting units are realized in N paths of areas, so that the miniaturization of power synthesis is realized, signals are sent to an output synthesis network, and m is a positive integer greater than or equal to 2; The output synthesis network is configured to be connected with the output of each two-dimensional space multiplexing module, and output the output signals after power synthesis; Each two-dimensional space multiplexing module is composed of a multi-stage amplifying circuit and comprises an input matching transformer, an amplifying core component, an interstage matching transformer component and an output matching transformer; The amplifying core assembly comprises a plurality of amplifying cores, the interstage matching transformer assembly comprises a plurality of interstage matching transformers, one interstage matching transformer is connected between every two amplifying cores, the input power dividing network divides input signal power into m multiplied by N paths of signals, each m paths of signals are input to the input end of the input matching transformer, the output end of the input matching transformer is connected with the 1 st stage amplifying core, the input end of the output matching transformer is connected with the last stage amplifying core, and the output end of the output matching transformer outputs m paths of signals to the output synthesis network; the input matching transformer, the interstage matching transformer and the output matching transformer are all composed of multi-coil transformers, and can be placed in an hollowed area in the middle of one transformer in an embedded mode to form a two-dimensional spatial multiplexing multi-coil transformer structure.
2. The circuit of claim 1, wherein when a four-coil transformer is used, each two coils form a transformer, and the transformer formed by one group of two coils is placed in an embedded manner in a middle area surrounded by two coils of the other transformer to form a two-dimensional space multiplexing four-coil transformer structure.
3. A two-dimensional spatial multiplexing composite power amplifier circuit according to claim 2, wherein: the two-dimensional space multiplexing four-coil transformer structure comprises the steps that an embedded transformer is in an +' shaped winding mode, so that magnetic flux generated by the embedded transformer is self-counteracted, near zero coupling of other coils is achieved, and decoupling adjustment of the two transformers is achieved.
4. A two-dimensional spatial multiplexing composite power amplifier circuit according to claim 2, wherein each amplifying core comprises m amplifiers, and wherein the input power dividing network divides the input signal power into m N signals, and wherein each amplifying core comprises m amplifiers.
5. The two-dimensional spatial multiplexing power amplifier circuit according to claim 4, wherein the input power dividing network divides the input signal power into m×N paths of signals, when the spatial multiplexing amplifying unit is a dual-port input, one input end of primary coils of m transformers which are input and matched are respectively connected with one path of signal, the other input end is grounded, and two ends of secondary coils of the two transformers are respectively connected with one amplifier in a1 st-stage amplifying core.

Description

Two-dimensional space multiplexing synthetic power amplifier circuit Technical Field The invention relates to the field of electronic devices, in particular to a two-dimensional spatial multiplexing synthetic power amplifier circuit. Background In phased array systems, radar detection distance is proportional to the square root of transmit power, and high power transmission can overcome the receiver noise effects. The conventional phased array system realizes power synthesis through distributed transmitting units (such as a TR module) so as to improve the transmitting power of the system, but as the requirements of the system on the integration level and the cost are higher and higher, more transmitting units need to be integrated in a limited space, so that the requirements on the power synthesis technology are also growing. The traditional passive on-chip power synthesis technology depends on passive network synthesis performance, common technologies comprise transformer synthesis and transmission network synthesis, multiple transmission units are generally placed in parallel in a traditional mode, all the transmission units are connected through a passive synthesis network to realize power synthesis superposition, theoretically, if power is doubled, the number of the synthesis units is doubled, and then the area of the transmission units is doubled, so that for the transmission units with high output power, a large amount of chip area is required to be consumed, and certain limitations exist in certain application scenes or circuits. And there is certain electromagnetic coupling between different transmitting units, and a certain distance needs to be placed between the transmitting units to ensure isolation, so that the design complexity of the input power division network and the output synthesis network can be further increased. Therefore, solving the on-chip power synthesis miniaturization problem is critical to reducing the transmit unit cost. Disclosure of Invention The invention aims to overcome the defects of the prior art, provides a two-dimensional spatial multiplexing synthesized power amplifier circuit, and solves the defects in the prior art. The invention aims at realizing the technical scheme that the two-dimensional space multiplexing power amplifier circuit comprises an input power division network, N paths of two-dimensional space multiplexing modules and an output synthesis network, wherein the multiplexing two-dimensional space multiplexing modules are connected in parallel between the input power division network and the output synthesis network; the input power division network is configured to distribute signals to each path of two-dimensional space multiplexing module for signal amplification; The two-dimensional space multiplexing module is configured to place adjacent m paths of amplifying units or transmitting units in the same area, and then m multiplied by N paths of amplifying units or transmitting units are realized in N paths of area, so that the miniaturization of power synthesis is realized, signals are sent to an output synthesis network, and m is a positive integer greater than or equal to 2; The output synthesis network is configured to be connected with the output of each two-dimensional space multiplexing module, and output the output signals after power synthesis. Each two-dimensional space multiplexing module is composed of a multi-stage amplifying circuit and comprises an input matching transformer, an amplifying core component, an interstage matching transformer component and an output matching transformer; The amplifying core assembly comprises a plurality of amplifying cores, the interstage matching transformer assembly comprises a plurality of interstage matching transformers, one interstage matching transformer is connected between every two amplifying cores, the input power dividing network divides input signal power into m multiplied by N paths of signals, each m paths of signals are input to the input end of the input matching transformer, the output end of the input matching transformer is connected with the 1 st stage amplifying core, the input end of the output matching transformer is connected with the last stage amplifying core, and the output end of the output matching transformer outputs m paths of signals to the output synthesis network. The input matching transformer, the interstage matching transformer and the output matching transformer are all composed of multi-coil transformers, and can be placed in an hollowed area in the middle of one transformer in an embedded mode to form a two-dimensional spatial multiplexing multi-coil transformer structure. In the case of a four-coil transformer, each two coils form a group of transformers, one of which is placed in an embedded manner in an hollowed area in the middle of the other transformer, so as to form a two-dimensional spatial multiplexing four-coil transformer structure. The two-dimensional space