Single-channel Array Transmitting Antenna Based on Bi-phase Code Modulation

Abstract

The invention discloses a single-channel array transmitting antenna based on two-phase code modulation. The antenna mainly solves the problems that an existing common array transmitting antenna is complex in structure, large in size, high in price and inconsistent in amplitude phase due to multiple channels. The single-channel array transmitting antenna comprises a waveform generator (1), a first-level modulation phase shifter (2), a digital-to-analog converter (3), an up converter (4), a low-noise amplifier (5), a second-level modulation phase shifter (6) and an antenna element (7), wherein two-phase modulation is carried out on a signal produced by the waveform generator (1) through the first-level modulation phase shifter to form a single-channel signal in a polymerization mode, the signal sequentially undergoes signal form conversion through the digital-to-analog converter (3), frequency mixing through the up converter (4) and amplification through the low-noise amplifier (5), then a simulation radio-frequency signal is obtained, the signal undergoes orthogonal demodulation and filtering processing through the second-level modulation phase shifter (6) and is output as a multi-channel signal, and the signal undergoes signal form conversion through the antenna element (7) to be transmitted. On the premise that conventional array transmitting antenna performance is guaranteed, the structure is simplified, the size is reduced, and amplitude phase consistency of the antenna is improved.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a single-channel array transmitting antenna, in particular to a single-channel array transmitting antenna that realizes multi-channel signals through binary code modulation aggregation and demodulation recovery, which can be used for communication and radar signal processing. Background technique [0002] As an indispensable device in radio technology equipment, antennas are widely used in radio fields such as communications, radar, navigation, broadcasting, and television. They transmit information through effective radiation and reception of radio waves. In recent years, the application of the military-based array antenna technology in economic construction is increasing, and the scope of application is expanding. The new demand of array antenna technology in economic construction and scientific research is also the driving force of array antenna technology. The c...

AI Technical Summary

Problems solved by technology

First of all, each antenna dipole end of a conventional array transmitting antenna is connected to a device including an up-converter, DAC, memory, and transceiver. Due to the high price of high-performance devices and the large number of uses, it greatly increases the performance of the array antenna. cost; secondly, for large arrays, a related design and implementation issue for conventional array transmit antennas is the synchronization of all channels within a practical volume and temperature range

Since the channels of the conventional array transmitting antenna are mostly composed of high-frequency electronic devices and used on a large scale, this will lead to the limitation of the volume of the electronic equipment attached to the antenna end, especially the area that can be used for heat dissipation is very limited

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