A Low Power LNA-Phase Shifter With Vector Sum Method for 60 GHz Beamforming Receiver

Song, In Sang; Lee, Joong Geun; Yoon, Giwan; Park, Chul Soon

doi:10.1109/lmwc.2015.2451365

Cited by 11 publications

(3 citation statements)

References 7 publications

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“…Active phase shifters are mainly based on the quadrature vector-summing technique, typically composed of an in-phase/quadrature-phase (I/Q) generator with cascaded variable-gain amplifiers (VGAs) [11]- [15]. Active phase shifters typically exhibit the characteristics of low insertion loss, small chip area, and high phase shift resolution at the expense of poor linearity and high power consumption [16]- [20].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of a 35-GHz Hybrid π-Network High-Gain Phase Shifter With 360° Continuous Phase Shifting

Wei

Ding

et al. 2021

IEEE Access

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This paper presents the analysis and design of a 35-GHz high-gain phase shifter with 360 • continuous phase shifting. To enhance the phase shift range, a hybrid π-network realized by combining the electrical tuning through capacitors and magnetic tuning through transformers is developed. The phase shift modules are inserted between the vertically stacking transistors to achieve the embedded phase shifting with the minimum loss. Furthermore, the Gm stages offer additional signal gain to suppress attenuation in the passive phase shifter. The capacitive neutralization technique is utilized to further increase the gain and enhance stability. This prototype, fabricated in a 28-nm CMOS process, demonstrates a 360 • continuous phase shift with a maximum gain of 25.6 dB and a minimum noise figure of 4.1 dB. It consumes 26-mW power with a supply voltage of 0.9 V and 1.25 mm × 0.75 mm chip area.

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Section: Introductionmentioning

confidence: 99%

Analysis and Design of a 35-GHz Hybrid π-Network High-Gain Phase Shifter With 360° Continuous Phase Shifting

Wei

Ding

et al. 2021

IEEE Access

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“…The idea of using a vector sum method for an all-pass phase shifter was presented for voltage gain amplifiers. (11) However, some power consumption is still required.…”

Section: Introductionmentioning

confidence: 99%

38 GHz All-pass Phase Shifter with Attenuator Using 0.15 µm GaAs Technology for Wireless Sensors

Tang¹

2020

Sensors and Materials

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A 38 GHz all-pass phase shifter designed using the pHEMT 0.15 μm GaAs process is presented. The phase shifter consists of two groups of a low-pass filter (LPF) with a 90° phase shift and attenuators. By tuning the bias voltage, the magnitude and phase of the signal are changed. At the end of the circuit, a power combiner is used to obtain a 360° all-pass output signal. The measurement results show that the phase shifter can achieve phase variation with an insertion loss of about 10 dB and an all-pass work function around a center frequency of 38 GHz. The chip area is about 1.12 mm 2. The phase shifter is suitable for sensing circuitry.

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“…A 4-bit reflective-type phase shifter with insertion loss of 7.4dB and phase tuning range of 180 • over 88-96GHz is proposed in [35]. Active vector-sum phase shifters are another approach to generate high-resolution phase shifting at millimeter wave [41], [42], [43], [44], [45], [46]. In addition, due to the variable gain amplifier (VGA) in vector-sum phase shifters, the insertion loss is relatively low.…”

mentioning

confidence: 99%

A W-Band 2 × 2 Phased-Array Transmitter With Digital Gain-Compensation Technique

Zhou,

Yang,

Shu

et al. 2024

IEEE Trans. Circuits Syst. I

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In this paper, a W-band 2 × 2 phased-array transmitter with digital gain compensation is proposed to minimize amplitude and angle errors of synthesized beams. The RF phase-shifting architecture is utilized for the phasedarray transmitter to reduce circuit blocks and lower system complexity. The high-resolution phase shifting is achieved by a vector-sum phase shifter, which is based on a quadrature-allpass filter (QAF) with compensation network and Gilbert-type variable gain amplifiers (VGAs) with digital-controlled current digital-to-analog converters (I-DACs). To lower the gain error introduced by the phase shifter in RF phase-shifting architecture, the variable-gain power amplifier (VGPA) is proposed. The gain of the VGPA is finely adjusted to compensate the gain variation of phase shifter in different phase states. Meanwhile, the phase variation of the VGPA under variable gain states is optimized to avoid the influence on phase errors. To verify the aforementioned mechanism, a W-band 2 × 2 phased-array transmitter is implemented and fabricated in a conventional 40nm CMOS technology. Based on the digital gain-compensation technique, the phased-array transmitter exhibits a less than 1.12dB RMS gain error and less than 1.82 • RMS phase error. In addition, the fabricated chip achieves 8.13dBm peak saturated output power and better than 9dB power gain with 135mW power consumption for each channel.

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A Low Power LNA-Phase Shifter With Vector Sum Method for 60 GHz Beamforming Receiver

Cited by 11 publications

References 7 publications

Analysis and Design of a 35-GHz Hybrid π-Network High-Gain Phase Shifter With 360° Continuous Phase Shifting

Analysis and Design of a 35-GHz Hybrid π-Network High-Gain Phase Shifter With 360° Continuous Phase Shifting

38 GHz All-pass Phase Shifter with Attenuator Using 0.15 µm GaAs Technology for Wireless Sensors

A W-Band 2 × 2 Phased-Array Transmitter With Digital Gain-Compensation Technique

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