A Flexible Phased-MIMO Array Antenna with Transmit Beamforming

Wang, Wen-Qin; Shao, Huaizong

doi:10.1155/2012/609598

Cited by 35 publications

(16 citation statements)

References 41 publications

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“…We can divide the FDA into multiple subarrays that can be disjoint or overlapped [58], as shown in Figure 7. Each subarray uses a distinct frequency increment and forms a directional beam.…”

Section: Range-dependent Transmit Beamformingmentioning

confidence: 99%

Frequency Diverse Array Antenna: New Opportunities

Wang

2015

IEEE Antennas Propag. Mag.

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216

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Phased-array antennas are known for their capability to electronically steer a beam with high effectiveness, but beam steering is fixed in an angle for all range cells. This paper reviews frequency diverse array (FDA) antennas. Different from a phased array, an FDA uses a small frequency increment, as compared with the carrier frequency, across array elements. The use of a frequency increment generates an array factor that is a function of the angle, the time, and the range, allowing the FDA antenna to transmit the energy over the desired range and angle. In addition to analyzing FDA factor characteristics, this paper investigates FDA potential applications in range-dependent energy control and technical challenges in system implementation, with an aim to call for further investigations on the FDA.

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Section: Range-dependent Transmit Beamformingmentioning

confidence: 99%

Frequency Diverse Array Antenna: New Opportunities

Wang

2015

IEEE Antennas Propag. Mag.

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216

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“…The proposed algorithm using successive single pulse means that one-pulse data with 10kHz frequency increment is used firstly, and then another pulse data with 7.5kHz frequency increment is used. The proposed algorithm using two pulses means that we set the two-pulse data into (6) together and then use (16) to estimate the angle.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…In addition, multiple input and multiple output (MIMO) radar can provide the waveform diversity advantage. So, the FDA-MIMO radar has received a wide attention [6][7][8][9]. One of the important problems in FDA-MIMO radar is still the design of rangeindependent transmitted waveforms.…”

Section: Introductionmentioning

confidence: 99%

A Combined ESPRIT-MUSIC Method for FDA-MIMO Radar with Extended Range Ambiguity Using Staggered Frequency Increment

Song

2019

International Journal of Antennas and Propagation

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For the problem of joint angle and range estimation with frequency diverse array (FDA), MIMO radar, staggered frequency increment is proposed to expand the range ambiguity and the joint algorithm of ESPRIT and MUSIC is proposed to reduce the computational complexity. The uniformly weighted beampattern of FDA is a SINC-like function. Therefore, the grating lobe of range estimation exists. In this paper, staggered frequency increment is proposed to increase the distance of adjacent grating lobes. The proposed joint estimation algorithm firstly estimates the angle by using ESPRIT algorithm. Then we get the range estimation by MUSIC one-dimensional range search using the above estimated angle. In simulation results section, it is indicated in simulation results that the proposed method improves the range grating lobe and reduces the complexity.

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“…We have proposed a methodology in which first the range of multiple targets is estimated then DOA estimation is performed by focusing the main beam in a particular range through FDA [23][24] so that power of the received signals in a batch remains almost same. FDA is used to concentrate beam on a particular range [22].…”

Section: Introductionmentioning

confidence: 99%