A Phase-Calibration Method for Vector-Sum Phase Shifters Using a Self-Generated LUT

Kalyoncu, İlker; Ozeren, Emre; Burak, Abdurrahman; Ceylan, Omer; Gürbüz, Yaşar

doi:10.1109/tcsi.2018.2885172

Cited by 19 publications

(8 citation statements)

References 26 publications

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“…Fast and accurate calibration of radio frequency (RF) branches in phased array is essential both in massive production line and actual working condition. Integrating internal calibration circuits is one way to calibrate the RF branches [2], [3]. However, the over-the-air (OTA) test is an efficient way to calibrate the overall system [3]- [8].…”

Section: Introductionmentioning

confidence: 99%

Improved Over-the-Air Phased Array Calibration Based on Measured Complex Array Signals

Zhang

Fan

Wang

et al. 2019

Antennas Wirel. Propag. Lett.

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This letter presents an improved phased array calibration method based on measured complex array signals with one single probe. All the phased array elements are excited simultaneously in the measurement and only phase reverse of each element is required. The error on the 1st antenna element of the reference method is analysed, which shows it is accumulated as the array size increases. One more measurement with designed element phase settings is introduced to overcome the deficiency. The improved method shows only N + 1 measurements are required to calibrate N antenna elements accurately. Finally, a 4 × 8 antenna array composed of 4-ridged horn antennas operating at 3.5 GHz was measured to validate the effectiveness of the improved algorithm.

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Section: Introductionmentioning

confidence: 99%

Improved Over-the-Air Phased Array Calibration Based on Measured Complex Array Signals

Zhang

Fan

Wang

et al. 2019

Antennas Wirel. Propag. Lett.

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“…In a system application, this would also necessitate a calibration procedure as is demonstrated in for example Ref. [31]. Table 5 shows the bias voltages needed for each VGA to affect the required relative phase shifts in the prototype device.…”

Section: Vsps Measurement Resultsmentioning

confidence: 99%

Phase shifters with multiple independently controllable bands utilising frequency‐selective variable gain networks

Venter

Stander

2021

IET Microwaves Antenna & Prop

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A dual‐band vector‐sum phase shifter with independent phase control of the 2.4 and 5 GHz Wi‐Fi bands is presented. The network uses band‐limited variable gain amplification, with a broadband hybrid coupler at the input and an in‐phase recombiner at the output. The circuit is prototyped on RF printed circuit board and exhibits performance characteristics comparable to the state‐of‐the‐art single band vector‐sum phase shifters. The prototype achieved an average gain of 2.16 dB over the 2.4 GHz band, with less than 0.26 dB and 1.32° root‐mean‐square (RMS) gain and phase error across all 2.4 and 5 GHz band tuning states. In the 5 GHz band, an average gain of 0.17 dB is achieved, with less than 0.21 dB and 3.88° RMS gain and phase error. The network's ability to generate band‐independent vector modulation over a 12 dB/90° tuning range is demonstrated as well, achieving less than 0.12 dB and 0.27° RMS gain and phase error in the 2.4 GHz band, and less than 0.27 dB and 2.94° gain and phase error in the 5 GHz band.

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“…In communication systems, phase shifters are imperative parts. The specifications of a high performance phase shifter consist of: low insertion loss, high input and output return losses, a wide phase shifting range, and high phase resolution [11][12][13][14][15][16][17][18][19][20]. In all of these devices, changing the lengths of the transmission lines, continuously or by high power switches, create the requisite values of phase shifts or delay lines.…”

Section: High Power Feeding Network Designmentioning

confidence: 99%

TV-based Phased Array System Design in BTSs for 5G/IoT Applications

Dastkhosh¹,

Naseh²,

Dardari³

et al. 2022

PIER C

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Cellular UHF (Ultra High Frequency) transceiver networks and base transceiver station antenna systems comprise high power phase shifters for changing and adjusting the phases or delays of high-power transmitting signals delivered to antenna elements. In this work, theoretical and practical adjustment methods of amplitudes and phases for electronic steering of a high power phased array antenna pattern are illustrated. In addition, a high power phase shifter with an asymmetric power divider is designed. The phases are changed and adjusted progressively, and thus the beam direction changes from −60 • to 60 • . The UHF phase shifter has been simulated with Advanced Design System (ADS) and CST STUDIO SUITE SPARK3D and measured. The simulations show that the designed and manufactured UHF phase shifter can also handle more than 20 kW and can be redesigned to reach up to more than 100 kW RF (Radio Frequency) power (microstrip/stripline structures) and can control/change phases of transmitting /receiving antennas. The phase shifter can be designed on any low loss substrate. By using this method in planar high power phased array antenna systems, 360 • planar beam tilting is also achievable.

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A Phase-Calibration Method for Vector-Sum Phase Shifters Using a Self-Generated LUT

Cited by 19 publications

References 26 publications

Improved Over-the-Air Phased Array Calibration Based on Measured Complex Array Signals

Improved Over-the-Air Phased Array Calibration Based on Measured Complex Array Signals

Phase shifters with multiple independently controllable bands utilising frequency‐selective variable gain networks

TV-based Phased Array System Design in BTSs for 5G/IoT Applications

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