A 4-Element 800MHz-BW 29mW True-Time-Delay Spatial Signal Processor Enabling Fast Beam-Training with Data Communications

Lin, Chung-Ching; Puglisi, Chase; Ghaderi, Erfan; Mohapatra, Soumen; Heo, Deukhyoun; Sk, Gupta; Han, Yan; Boljanovic, Veljko; Čabrić, Danijela

doi:10.1109/esscirc53450.2021.9567822

Cited by 18 publications

(3 citation statements)

References 11 publications

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“…11. The corresponding calculated results using ( 8), ( 14), (16), and (18) are also plotted using dashed lines across frequencies or markers at f R , showing a reasonable match. The delay error, i.e., the difference between T d and S21 delay, is due to the dispersive LC delay units as discussed in Section III-A (8).…”

Section: B Lossy Inductorsmentioning

confidence: 75%

A Commutated-LC RF Broadband Delay Circuit

Ming

Yang

Zhou

2022

IEEE J. Solid-State Circuits

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Section: B Lossy Inductorsmentioning

confidence: 75%

A Commutated-LC RF Broadband Delay Circuit

Ming

Yang

Zhou

2022

IEEE J. Solid-State Circuits

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“…Since this thesis work started in 2017 a new true-time-delay method has gained popularity with several [64,85,86,87,88,89,65,90] publications during this time in addition to the ones included in this thesis. This work calls the method resampling true-time-delay since the signals need to be sampled twice consecutively.…”

Section: Circuits For Analog True-time-delay Beamformingmentioning

confidence: 99%

A 0.8-6 GHz True-Time-Delay Beam-Nulling Receiver Front-End

Spoof

Tenhunen

Unnikrishnan

et al. 2022

2022 29th IEEE International Conference on Electronics, Circuits and Systems (ICECS)

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“…As shall be shown in Section II this can be beneficial for many applications. In recent times, significant progress has been made in the implementation of tunable TTDs [22], [23] that use either optical components [24], [25] or CMOS components operating at base-band [26]- [28], cm-wave [29], [30] or mm-wave [31] frequencies. From a system perspective, the use of TTDs in wide-band multi-antenna systems to prevent beam-squinting effects by creating unidirectional, frequency-flat beams was explored in [32]- [35].…”

Section: Introductionmentioning

confidence: 99%

Joint Phase-Time Arrays: A Paradigm for Frequency-Dependent Analog Beamforming in 6G

Ratnam

AlAmmouri

et al. 2022

IEEE Access

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Hybrid beamforming is an attractive solution to build cost-effective and energy-efficient transceivers for millimeter-wave and terahertz systems. However, conventional hybrid beamforming techniques rely on analog components that generate a frequency flat response such as phase-shifters and switches, which limits the flexibility of the achievable beam patterns. As a novel alternative, this paper proposes a new class of hybrid beamforming called Joint phase-time arrays (JPTA), that additionally use true-time delay elements in the analog beamforming to create frequency-dependent analog beams. Using as an example two important frequency-dependent beam behaviors, the numerous benefits of such flexibility are exemplified. Subsequently, the JPTA beamformer design problem to generate any desired beam behavior is formulated and near-optimal algorithms to the problem are proposed. Simulations show that the proposed algorithms can outperform heuristics solutions for JPTA beamformer update. Furthermore, it is shown that JPTA can achieve the two exemplified beam behaviors with one radio-frequency chain, while conventional hybrid beamforming requires the radio-frequency chains to scale with the number of antennas to achieve similar performance. Finally, a wide range of problems to further tap into the potential of JPTA are also listed as future directions.INDEX TERMS millimeter-wave, terahertz, true time delay, beamforming, JPTA, beyond 5G, 6G

show abstract

A 4-Element 800MHz-BW 29mW True-Time-Delay Spatial Signal Processor Enabling Fast Beam-Training with Data Communications

Cited by 18 publications

References 11 publications

A Commutated-LC RF Broadband Delay Circuit

A Commutated-LC RF Broadband Delay Circuit

A 0.8-6 GHz True-Time-Delay Beam-Nulling Receiver Front-End

Joint Phase-Time Arrays: A Paradigm for Frequency-Dependent Analog Beamforming in 6G

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