| Abstrakt: |
This paper presents a Ka-band variable gain phase shifter with a non-linear DAC comprising an IQ generator, a pair of vector generators with a 180° phase difference, and a vector summation circuit. Non-linear DACs are used to simplify the phase control DACs and reduce phase errors. Between 29 GHz and 33 GHz, the insertion loss and total root mean square phase error are less than 5.02 dB and 1.71°, respectively. The device, which measured 0.259 mm² in size including the DACs, was fabricated using the 65-nm RF CMOS process. [ABSTRACT FROM AUTHOR] |
