A 345μW 1GHz Process and Temperature Invariant Constant Slope-and-Swing Ramp-based 7-bit Phase Interpolator for True-Time-Delay Spatial Signal Processors

被引：2

作者：

Mohapatra, Soumen ^{[1
]}

Lin, Chung-Ching ^{[1
]}

Chahardori, Mohammad ^{[1
]}

Ghaderi, Erfan ^{[1
]}

Hoque, Md Aminul ^{[1
]}

Gupta, Subhanshu ^{[1
]}

Heo, Deukhyoun ^{[1
]}

机构：

[1] Washington State Univ, Sch Elect Engn & Comp Sci, Pullman, WA 99164 USA

来源：

2022 IEEE RADIO FREQUENCY INTEGRATED CIRCUITS SYMPOSIUM (RFIC) | 2022年

关键词：

Ramp-rate tracking; constant slope-and-swing; phase interpolator; ramp-based; baseband time delay; CONVERTER;

D O I：

10.1109/RFIC54546.2022.9863133

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In the baseband time delay (TD) elements used for delay compensation in discrete-time beamformers, phase interpolator (PI) plays a crucial role as the resolution of the PI defines the delay resolution of the TD. In this paper, we present a process and temperature invariant high-resolution and highly linear low-power PI. The proposed PI uses current integration which generates an adaptable constant slope-and-swing ramp signal to achieve low power. By switched-capacitor bias generation, the PI linearity is enhanced with 0.2 LSB DNL and 0.3 LSB INL, respectively. The 7-bit PI is realized in 65nm CMOS technology can generate the full range delay with a resolution of 8psec with the input of 1GHz. The PI consumes a power of 345 mu W and occupies an active area of 0.021mm(2).

引用

页码：147 / 150

页数：4