研究目的
To present a mm-wave fully differential coplanar waveguide (CPW) vertically-coupled lines coupler and a reflection type phase shifter (RTPS) based on the proposed coupler, designed and fabricated in 45nm CMOS SOI technology, aiming for compact size and high-resolution phase shifting properties.
研究成果
The designed coupler and RTPS demonstrate compact size and efficient area utilization with a phase tuning range of 115 degrees and insertion loss of 6 dB ± 2 dB. The differential CPW coupler based RTPS outperforms other state-of-the-art designs in terms of area.
研究不足
High variation in insertion loss (IL) of RTPS due to the response of switchable capacitance because of lower Q-value, which could be mitigated by using varactors at the cost of lower tuning ratio (TR).
1：Experimental Design and Method Selection:
The design involves a fully differential CPW-based vertically-coupled line coupler and an RTPS operating at 40 GHz centre frequency. The coupler is designed using 45nm CMOS SOI process technology, utilizing differential coplanar waveguide (CPW) lines for shielding and minimizing unwanted coupling.
2：Sample Selection and Data Sources:
The coupler and RTPS are fabricated in 45nm CMOS SOI technology. Measurements include insertion loss and phase tuning range using differential probes and Keysight 67 GHz PNA.
3：List of Experimental Equipment and Materials:
Keysight 67 GHz PNA for measurements, 45nm CMOS SOI process for fabrication, and differential probes.
4：Experimental Procedures and Operational Workflow:
The coupler and RTPS are measured with differential probes after calibration up to the probe tips from frequencies 200MHz to 52 GHz. The phase shifter's performance is evaluated based on phase tuning range and insertion loss variation.
5：Data Analysis Methods:
Simulated values of even and odd-mode impedances are compared with specifications. Measured results are compared with simulations to evaluate performance.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
