Wideband mm-Wave CMOS Slow Wave Coupler
Research output: Contribution to journal › Article › Scientific › peer-review
|Number of pages||3|
|Journal||IEEE Microwave and Wireless Components Letters|
|Publication status||Published - 1 Mar 2019|
|MoE publication type||A1 Journal article-refereed|
In this letter, we have presented a design of on-chip millimeter-wave 3-dB quadrature coupler that utilizes the coupled slow wave coplanar waveguide. The designed CMOS coupler covers the whole E- and W-band and occupies a silicon area of only 0.0115 mm 2 , which is significantly smaller compared to the conventional microstrip-line-based Lange couplers. Measurement of the quadrature coupler shows a -3.5 dB through and a -4.4-dB coupling at 90 GHz. A less than ±1-dB amplitude and a ±4° phase errors from 55 to 110 GHz are recorded.
- 3 dB, CMOS, coupled line, coupled slow wave coplanar waveguide (CS-CPW), coupler, E-band, Lange coupler, millimeter-wave (mm-wave), quadrature, SiGe, slow wave, W-band