scholarly journals An X-band Bi-Directional Transmit/Receive Module for a Phased Array System in 65-nm CMOS

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2569 ◽  
Author(s):  
Van-Viet Nguyen ◽  
Hyohyun Nam ◽  
Young Choe ◽  
Bok-Hyung Lee ◽  
Jung-Dong Park
Keyword(s):  
Phase Shifter ◽  
Phased Array ◽  
Cmos Technology ◽  
Step Size ◽  
Gain Compression ◽  
Chip Area ◽  
Phase Errors ◽  
Dc Power ◽  
X Band ◽  
Variable Attenuator

We present an X-band bi-directional transmit/receive module (TRM) for a phased array system utilized in radar-based sensor systems. The proposed module, comprising a 6-bit phase shifter, a 6-bit digital step attenuator, and bi-directional gain amplifiers, is fabricated using 65-nm CMOS technology. By constructing passive networks in the phase-shifter and the variable attenuator, the implemented TRM provides amplitude and phase control with 360° phase coverage and 5.625° as the minimum step size while the attenuation range varies from 0 to 31.5 dB with a step size of 0.5 dB. The fabricated T/R module in all of the phase shift states had RMS phase errors of less than 4° and an RMS amplitude error of less than 0.93 dB at 9–11 GHz. The output 1dB gain compression point (OP1dB) of the chip was 5.13 dBm at 10 GHz. The circuit occupies 3.92 × 2.44 mm2 of the chip area and consumes 170 mW of DC power.

scholarly journals An X-Band CMOS Digital Phased Array Radar from Hardware to Software

Sensors ◽  
2021 ◽  
Vol 21 (21) ◽  
pp. 7382
Author(s):  
Yue-Ming Wu ◽  
Hao-Chung Chou ◽  
Cheng-Yung Ke ◽  
Chien-Cheng Wang ◽  
Chien-Te Li ◽  
...  
Keyword(s):  
Phased Array ◽  
Beam Steering ◽  
Cmos Technology ◽  
Oxide Semiconductor ◽  
Injection Technique ◽  
Element Level ◽  
Digital Beamforming ◽  
Phased Array Radar ◽  
X Band ◽  
Compact Size

Phased array technology features rapid and directional scanning and has become a promising approach for remote sensing and wireless communication. In addition, element-level digitization has increased the feasibility of complicated signal processing and simultaneous multi-beamforming processes. However, the high cost and bulky characteristics of beam-steering systems have prevented their extensive application. In this paper, an X-band element-level digital phased array radar utilizing fully integrated complementary metal-oxide-semiconductor (CMOS) transceivers is proposed for achieving a low-cost and compact-size digital beamforming system. An 8–10 GHz transceiver system-on-chip (SoC) fabricated in 65 nm CMOS technology offers baseband filtering, frequency translation, and global clock synchronization through the proposed periodic pulse injection technique. A 16-element subarray module with an SoC integration, antenna-in-package, and tile array configuration achieves digital beamforming, back-end computing, and dc–dc conversion with a size of 317 ×149 × 74.6 mm3. A radar demonstrator with scalable subarray modules simultaneously realizes range sensing and azimuth recognition for pulsed radar configurations. Captured by the suggested software-defined pulsed radar, a complete range–azimuth figure with a 1 km maximum observation range can be displayed within 150 ms under the current implementation.

A 1.2 V 15–32 GHz low-power single-balanced gate mixer with a miniature rat-race hybrid

2012 ◽  
Vol 4 (4) ◽  
pp. 455-461
Author(s):  
Chung-Chun Chen ◽  
Chun-Hsien Lien ◽  
Hen-Wai Tsao ◽  
Huei Wang
Keyword(s):  
Power Consumption ◽  
Design Procedure ◽  
Local Oscillator ◽  
Cmos Technology ◽  
Conversion Gain ◽  
Conversion Loss ◽  
Power Budget ◽  
Digital Cmos ◽  
Chip Area ◽  
Dc Power

A 15–32 GHz miniature single-balanced gate mixer is proposed and analyzed. It achieves a smaller chip area with acceptable conversion gain and port-to-port isolation. In addition, the design procedure is described in detail. This mixer, fabricated in 90 nm digital CMOS technology, demonstrates a measured conversion loss of 1 dB and higher than 30 dB RF-to-LO port isolation from 17 to 32 GHz, at a local oscillator (LO) driver power of −4.3 dBm. The total dc power consumption is only 6 mW from a 1.2 V supply, including output buffer. The low dc power consumption and LO driver power reduce the power budget, and the proposed miniature rat-race hybrid facilitates integration in a receiver.

scholarly journals A Full X-Band Phased-Array Transmit/Receive Module Chip in 65-nm CMOS Technology

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 76182-76192
Author(s):  
Hyohyun Nam ◽  
Van-Viet Nguyen ◽  
Van-Son Trinh ◽  
Jeong-Moon Song ◽  
Bok-Hyung Lee ◽  
...  
Keyword(s):  
Phased Array ◽  
Cmos Technology ◽  
X Band

scholarly journals Inkjet printed BST thick-films for x-band phase shifter and phased array applications

2013 ◽  
Author(s):  
M. Nikfalazar ◽  
M. Sazegar ◽  
A. Friederich ◽  
C. Kohler ◽  
Y. Zheng ◽  
...  
Keyword(s):  
Phase Shifter ◽  
Phased Array ◽  
Thick Films ◽  
X Band
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