Title :
A 239–281 GHz CMOS Receiver With On-Chip Circular-Polarized Substrate Integrated Waveguide Antenna for Sub-Terahertz Imaging
Author :
Yang Shang ; Hao Yu ; Haipeng Fu ; Wei Meng Lim
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
A 239-281 GHz sub-THz imager with circular- polarize d substrate-integrated-waveguide (SIW) antenna is demonstrated in CMOS 65 nm process with high spectrum resolution and high sensitivity for sub-THz spectroscopy imaging system with consideration of depolarization effects. The sub-THz imager is a receiver that consists of a circular polarized substrate integrated waveguide (SIW) antenna, down-conversion mixer and power gain amplifier (PGA). The proposed receiver is measured with -2 dBi conversion gain over 42 GHz bandwidth, -54.4 dBm sensitivity at 100 MHz detection resolution bandwidth, 6.6 mW power consumption and 0.99 mm2 chip area. Moreover, frequency dependent sub-THz images are demonstrated by the proposed receiver.
Keywords :
CMOS integrated circuits; power amplifiers; power consumption; terahertz wave imaging; waveguide antennas; 2 dBi conversion gain; CMOS receiver; PGA; bandwidth 100 MHz; circular polarized substrate integrated waveguide antenna; dBm sensitivity; depolarization effects; detection resolution bandwidth; down-conversion mixer; frequency dependent subTHz imaging; high spectrum resolution; on-chip circular-polarized substrate integrated waveguide antenna; power 6.6 mW; power gain amplifier; subTHz spectroscopy imaging system; subterahertz imaging; CMOS integrated circuits; Imaging; Integrated optics; Mixers; Receivers; System-on-chip; CMOS 65 nm; high detection resolution; sub-THz imager; substrate integrated waveguide;
Journal_Title :
Terahertz Science and Technology, IEEE Transactions on
DOI :
10.1109/TTHZ.2014.2352040
