Design of Oscillator-Based Reconfigurable Modulator With High-Q FBAR Resonators Supporting Fast OOK/BFSK/ BPSK Modulation

被引：0
作者：
Liang, Dong [1 ,2 ]
Zhang, Hui [1 ,2 ]
Wang, Yetong [1 ,2 ]
Ma, Linhao [1 ,2 ]
Ma, Shiyue [1 ,2 ]
Zhou, Zhijun [3 ,4 ]
Meng, Fanyi [1 ,2 ]
Ma, Kaixue [1 ,2 ]
Wang, Keping [1 ,2 ]
机构：
[1] Tianjin Univ, Sch Microelect, Minist Educ, Tianjin 300072, Peoples R China
[2] Tianjin Univ, Key Lab Organ Integrated Circuit, Tianjin 300072, Peoples R China
[3] Southeast Univ, Inst RF & OE ICs, Sch Informat & Engn, Minist Educ, Nanjing 210096, Peoples R China
[4] Southeast Univ, Engn Res Ctr RF ICs & RF Syst, Nanjing 210096, Peoples R China
来源：
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS | 2025年 / 72卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Modulation; Oscillators; Film bulk acoustic resonators; Circuits; Transistors; Binary phase shift keying; Switching circuits; Phase modulation; Energy efficiency; Resonators; FBAR; oscillator-based modulator; BPSK; OOK; BFSK; polarity swap switch; adaptive fast switch; TRANSMITTER; INJECTION; TRANSCEIVER; PLL;
D O I：
10.1109/TCSI.2025.3559727
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：
An oscillator-based reconfigurable modulator is proposed to support multi-mode and fast modulation. A direct-modulation structure composed of the cross-coupled oscillator with the fast-switched film bulk acoustic resonator (FBAR) is used to enhance the frequency stability under fast OOK/BFSK modulation. To avoid extra phase-reversal circuitry, a polarity-swapped switching structure is employed in the differential branches of the modulator to achieve energy-efficient BPSK modulation, and this structure is also reused as a buffer stage for OOK/BFSK modulation to avoid the loading effect. In addition, an adaptive fast-switching technique is also proposed to improve OOK/BFSK modulation data rate and energy efficiency. The modulator is fabricated in a 180 nm CMOS technology. The free-running oscillation frequencies with two FBARs are 962 MHz and 990 MHz, and the measured phase noises are -137.3 dBc/Hz@1MHz and -137.1 dBc/Hz@1MHz, respectively. For OOK/BFSK/BPSK modulation, the proposed modulator demonstrated 280/325/67.6 pJ/bit energy efficiency and 5.63/4.20/5.55 % rms EVM with 10/10/50 Mbps data rates.
引用
收藏
页码：2543 / 2555
页数：13
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