A novel single RF channel scheme for smart antenna based on optical delay lines

Cui, Can; Zhang, Duo; Zhang, Jindong; Wu, Wen

doi:10.1109/mwp.2014.6994531

Cited by 4 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The echo signals of different distances and frequencies of the transmitting and receiving antennas at the same time will inevitably interfere with each other, so the general antenna array uses time division multiplexing (TDM) to use each transmitting and receiving antenna pair; that is, only one antenna pair is turned on at a time, and then the next antenna pair is turned on after sampling is completed [22][23][24].…”

Section: Tdsm Switch Switching Methodsmentioning

confidence: 99%

Research on Development 3D Ground Penetrating Radar Acquisition and Control Technology for Road Underground Diseases with Dual-Band Antenna Arrays

Fang,

Yang,

et al. 2023

Sensors

View full text Add to dashboard Cite

This paper describes the development of a new 3D ground-penetrating radar (GPR) acquisition and control technology for road underground diseases with dual-band antenna arrays. The 3D GPR system can be mounted on a vehicle-loading device and used by vehicles to detect road underground diseases at regular speeds. Compared with existing 3D GPR systems, this new type of 3D GPR has the following design features: it has dual-band antenna arrays, including a 16-channel 400 MHz antenna array and an 8-channel 200 MHz antenna array, which not only improves the detection efficiency, but also effectively balances the detection depth and detection resolution. A novel antenna switching method for time division step multiplexing (TDSM) is realized via field programmable gate array (FPGA), which not only avoids the crosstalk of antenna echo signals of different frequencies, but also ensures the interval of the same antenna working time. By combining the advantages of the FPGA and micro-control unit (MCU), and utilizing the high-speed transmission of the network port, the high-speed real-time transmission of the 3D GPR echo data is achieved. Finally, the integration of all software and hardware verified the correctness of the system, with good results.

show abstract

Section: Tdsm Switch Switching Methodsmentioning

confidence: 99%

Research on Development 3D Ground Penetrating Radar Acquisition and Control Technology for Road Underground Diseases with Dual-Band Antenna Arrays

Fang,

Yang,

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…Therefore, this approach requires a more complex DBF processing procedure. This problem can be resolved by introducing true-time delay (TTD) lines with different delay times [7]. However, the SMILE method requires a sampling rate much larger than the signal The associate editor coordinating the review of this manuscript and approving it for publication was Huawei Chen.…”

Section: Introductionmentioning

confidence: 99%

“…Compared to the method proposed in Ref. [7], this CTDCA-based method also introduces an increasing time delay across the array elements through TTD lines. The delayed signals are then summed together and fed to the single receiver.…”

Section: Introductionmentioning

confidence: 99%

A Single Receive Channel DBF Method for Ultra-Wideband Radar

et al. 2019

View full text Add to dashboard Cite

In this paper, we present a space code agility-based single receive channel digital beamforming (DBF) method for ultra-wideband radar. The proposed single channel DBF method outperforms the existing single channel DBF method with a space-time coded array architecture regarding both the angular and the range sidelobe levels by integrating multiple pulses modulated by irrelevant space codes. A frequency-domain equivalent DBF algorithm is also developed. This algorithm is immune to the mismatch between the sampling rate of the recorded signal and the space-time response function of the space-time coded array under ultra-wideband circumstances, in which cases the existing space-time coded array DBF methods will suffer. Moreover, the target motion over multiple pulse repetition intervals (PRIs) is taken into account in the development of the frequency-domain DBF algorithm. Therefore, performance degradation due to target motion is avoided. Numerical simulations verify the effectiveness of the proposed method. INDEX TERMS Digital beamforming (DBF), single receive channel, ultra-wideband radar, space-time coded array, space code agility.

show abstract

A single‐channel transmitarray antenna with abilities of super resolution and digital beamforming

Guo,

Tang,

2024

Micro & Optical Tech Letters

View full text Add to dashboard Cite

A single‐channel transmitarray antenna with abilities of super resolution and digital beamforming (DBF) is proposed. The amplitude and phase distributions on the array aperture are reconstructed through beam switching with a single channel. By finding and solving relations between distributions and received signals of beams, aperture distributions can be reconstructed. The ill‐conditioned problem caused by limited scanning range and angular interval is solved using the regularization method. The obtained distributions can then be delivered to super‐resolution algorithm to obtain super resolution, or used to produce shaped beams by DBF. On the basis of the proposed theory, a bifocal beam‐reconfigurable transmitarray is designed and tested as a single‐channel DBF antenna without special and additional hardware design. It has the outstanding advantages of low cost, simple structure, low energy consumption, and high working frequency.

show abstract

A novel single RF channel scheme for smart antenna based on optical delay lines

Cited by 4 publications

References 7 publications

Research on Development 3D Ground Penetrating Radar Acquisition and Control Technology for Road Underground Diseases with Dual-Band Antenna Arrays

Research on Development 3D Ground Penetrating Radar Acquisition and Control Technology for Road Underground Diseases with Dual-Band Antenna Arrays

A Single Receive Channel DBF Method for Ultra-Wideband Radar

A single‐channel transmitarray antenna with abilities of super resolution and digital beamforming

Contact Info

Product

Resources

About