TY - GEN
T1 - Design of a 1-to-4 subarray element for wireless subharmonic injection in the THz band
AU - Zhang, Meng
AU - Wang, Peng Yuan
AU - Rennings, Andreas
AU - Clochiatti, Simone
AU - Prost, Werner
AU - Weimann, Nils
AU - Erni, Daniel
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/7/5
Y1 - 2021/7/5
N2 - This paper presents an on-chip 1 to 4 subarray element for wireless subharmonic injection (WSI) in the context of antenna-in-antenna THz oscillators. The proposed antenna receives the third-order subharmonic injection signal (SIS) at 100 GHz from one side and radiates the 300 GHz fundamental oscillation signal (FOS) to the opposite side, which performs like a subharmonic transmitarray. Each element is consisted of a single SIS receiving antenna (Receiver antenna, RA) connected with a 2×2 FOS array (Transmitter antenna, TA). By positioning more FOS antenna around the single SIS antenna, the element spacing at 300 GHz is shorted within one wavelength which inhibits the grating lobe. Through tuning the distance of the FOS array element, the surface wave in the thick indium phosphide (InP) substrate is also reduced to some degree. The simulation results show that the maximum radiation efficiency of the designed chip antenna structure is better than 50% in both the 100 GHz and the 300 GHz band. The conjugate impedance matching in the dual-band is achieved according to the active element requirement. Utilizing the antenna proposed in this work, a low injection loss is verified in the periodical boundary based WSI simulation.
AB - This paper presents an on-chip 1 to 4 subarray element for wireless subharmonic injection (WSI) in the context of antenna-in-antenna THz oscillators. The proposed antenna receives the third-order subharmonic injection signal (SIS) at 100 GHz from one side and radiates the 300 GHz fundamental oscillation signal (FOS) to the opposite side, which performs like a subharmonic transmitarray. Each element is consisted of a single SIS receiving antenna (Receiver antenna, RA) connected with a 2×2 FOS array (Transmitter antenna, TA). By positioning more FOS antenna around the single SIS antenna, the element spacing at 300 GHz is shorted within one wavelength which inhibits the grating lobe. Through tuning the distance of the FOS array element, the surface wave in the thick indium phosphide (InP) substrate is also reduced to some degree. The simulation results show that the maximum radiation efficiency of the designed chip antenna structure is better than 50% in both the 100 GHz and the 300 GHz band. The conjugate impedance matching in the dual-band is achieved according to the active element requirement. Utilizing the antenna proposed in this work, a low injection loss is verified in the periodical boundary based WSI simulation.
KW - Antenna-in-antenna oscillator
KW - Power combination
KW - Subharmonic transmitarray
KW - THz
KW - Wireless subharmonic injection
UR - https://www.scopus.com/pages/publications/85112643609
U2 - 10.1109/IWMTS51331.2021.9486781
DO - 10.1109/IWMTS51331.2021.9486781
M3 - Conference contribution
AN - SCOPUS:85112643609
T3 - 2021 4th International Workshop on Mobile Terahertz Systems, IWMTS 2021
BT - 2021 4th International Workshop on Mobile Terahertz Systems, IWMTS 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 4th International Workshop on Mobile Terahertz Systems, IWMTS 2021
Y2 - 5 July 2021 through 6 July 2021
ER -