A 1.2V Low-Power Multi-Band Mixing Frequency Synthesizer for FDD System

Yixing Lu1; Zhangcai Liu1; Ruiyong Xiang1; Kun Gao1; Yupeng Chen2; Haigang Feng1

10.1109/IWS58240.2023.10222414

2023

979-8-3503-3654-2

2023 IEEE MTT-S International Wireless Symposium (IWS)

1-4

14-17 May 2023

Qingdao, China

This article presents a novel low-power multi-band mixing frequency synthesizer for FDD System. The synthesizer can provide local oscillation signals for both TX and RX simultaneously with only one phase-locked loop (PLL). By selecting the spacing frequency between the uplink and downlink as its reference, plus a notch filter removing strong spur component, this PLL achieves lower power consumption and smaller die area. The mixing frequency synthesizer is fabricated in 65 nm CMOS process with an area of 0.571 mm2, The test results show that the proposed synthesizer achieves a 3.3-3.66 GHz frequency tuning range with the out-of-band PN of -114.9 dBc/Hz at 1 MHz offset from a 3.42 GHz carrier. And the reference spur is measured to be -50.16 dBc at 180 MHz offset. The entire mixing frequency synthesizer consumes 7.2 mW at the 1.2 V supply voltage with 4.15 mW associated with VCO.

FDD low power mixing frequency synthesizer notch filter mixer phase-locked loop (PLL)

其他

EI

20233814749619

Frequency division multiplexing ; Frequency synthesizers ; Mixing ; Notch filters

Electric Filters:703.2 ; Oscillators:713.2 ; Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers:713.5 ; Chemical Operations:802.3

IEEE

1.SIGS, Tsinghua University, China
2.School of Microelectronics, Southern University of Science and Technology, China

Yixing Lu,Zhangcai Liu,Ruiyong Xiang,et al. A 1.2V Low-Power Multi-Band Mixing Frequency Synthesizer for FDD System[C],2023:1-4.