Ultrawideband Frequency-Diverse Array Antennas: Range-Dependent and Autoscanning Beampattern Applications

Wang, Wen-Qin

doi:10.1109/map.2018.2818023

Cited by 18 publications

(9 citation statements)

References 44 publications

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“…Ultrawideband FDA Formulation. Very recently, ultrawideband (UWB) FDA has been reported in [13]. We think that for designing UWB FDA schemes for mm-wave communication systems, many areas of applications could benefit from such system.…”

Section: 2mentioning

confidence: 99%

“…Analogous to [13], we illustrate continuous FDA waveform and pulsed FDA waveform in Figure 4. 푠 is defined as the start time and 푒 denotes the ending time.…”

Section: 2mentioning

confidence: 99%

“…And 1/Δ is equal to pulse repetition frequency (PRF). Also it is worth mentioning that for a wideband pulsed (WB) FDA, this relation, i.e., ( − ( − sin )/ ) ≈ ( − / ), does not hold [13]. Therefore, we can write WB FDA transmit beampattern as [13] 푊퐵−퐹퐷퐴 ( , , ) In this paper, we consider rectangular pulse ( ) which is given as…”

Section: 2mentioning

confidence: 99%

“…Comparisons of transmit beampatterns: (a) FDA using continuous-wave, (b) FDA pulsed-wave, parameters: = 32, Δ = 1 , = 120 , and 푠 = 1[13]. Comparisons of transmit beampatterns: (a) FDA using continuous-wave, (b) FDA pulsed-wave, parameters: = 32, Δ = 1 , and 푠 = 0.2[13].…”

mentioning

confidence: 99%

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Development of Frequency Modulated Array Antennas for Millimeter-Wave Communications

Nusenu

2019

Wireless Communications and Mobile Computing

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With the massive growth of wireless data in mobile broadband communications, millimeter-wave (mm-wave) communication is an alternative enabling technique for fifth generation (5G) wireless communication systems. More importantly, mm-wave offers large frequency spectrum bands ranging from 30GHz to 300GHz that can be utilized to provide very high capacity (i.e., multigigabits per-second data rates). Moreover, because of the small wavelength at mm-wave frequencies, we can exploit large antenna elements in a small physical area, meaning beamforming schemes are feasible. Nevertheless, high directional antennas should be used due to overcoming the severe path loss and absorption in mm-wave frequencies. Further, the antennas should be steerable in angle and range directions to support point-to-point (multipoint) communications. So far, mm-wave communication has utilized phased-array antennas arrangement which is solely angle dependent. This review paper presents recent array technology, namely, frequency modulated frequency diverse array (FDA) for mm-wave communication applications with an emphasis on beamforming. In FDA, small frequency increment is added across the elements. In doing so, an array beam is generated which is angle-range-time dependent without the need of phase shifters. This feature has several promising potentials in mm-wave communications. In this review, the object is to bring to the fore this advance FDA technology to mm-wave communications community to call for more investigations. We review FDA research progress up to date and highlight the potential applications in mm-wave communications.

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Section: 2mentioning

confidence: 99%

“…Analogous to [13], we illustrate continuous FDA waveform and pulsed FDA waveform in Figure 4. 푠 is defined as the start time and 푒 denotes the ending time.…”

Section: 2mentioning

confidence: 99%

Section: 2mentioning

confidence: 99%

mentioning

confidence: 99%

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Development of Frequency Modulated Array Antennas for Millimeter-Wave Communications

Nusenu

2019

Wireless Communications and Mobile Computing

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“…The time and angle periodicity of an FDA beampattern is analysed in [10]. Therefore, instead of angle‐dependent beampatterns such as phased arrays, FDA patterns also depend on the frequency, range and time [11], which could be exploited in radar applications. The FDA is different from the orthogonal frequency‐division multiplexing (OFDM) technique [12] and the multiple‐input multiple‐output (MIMO) technique [13].…”

Section: Introductionmentioning

confidence: 99%