scholarly journals Switchable wide tuning range bandstop filters for frequency-agile radios

2011 ◽  
Author(s):  
Zhengzheng Wu ◽  
Yonghyun Shim ◽  
Mina Rais-Zadeh
Keyword(s):  
Tuning Range ◽  
Wide Tuning Range ◽  
Frequency Agile ◽  
Bandstop Filters

scholarly journals Low-Loss Wide-Tuning-Range Three-Pole Frequency-Agile Bandpass Diplexer With Identical Constant Absolute Bandwidth

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 149833-149845 ◽  
Author(s):  
Zhiyou Li ◽  
Xiaohong Tang ◽  
Di Lu ◽  
zongqi Cai ◽  
Yong Liu ◽  
...  
Keyword(s):  
Tuning Range ◽  
Low Loss ◽  
Wide Tuning Range ◽  
Frequency Agile

Novel Frequency-Agile Bandpass Filter With Wide Tuning Range and Spurious Suppression

2015 ◽  
Vol 62 (10) ◽  
pp. 6428-6435 ◽  
Author(s):  
Jian-Xin Chen ◽  
Yalin Ma ◽  
Jing Cai ◽  
Li-Heng Zhou ◽  
Zhi-Hua Bao ◽  
...  
Keyword(s):  
Tuning Range ◽  
Bandpass Filter ◽  
Wide Tuning Range ◽  
Frequency Agile ◽  
Spurious Suppression

scholarly journals A Novel Fast-Locking ADPLL Based on Bisection Method

Electronics ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1382
Author(s):  
Xiaoying Deng ◽  
Huazhang Li ◽  
Mingcheng Zhu
Keyword(s):  
High Performance ◽  
Tuning Range ◽  
Frequency Control ◽  
Control Word ◽  
Cmos Process ◽  
Bisection Method ◽  
Reference Frequency ◽  
Wide Tuning Range ◽  
Cascade Structure ◽  
And Control

Based on the idea of bisection method, a new structure of All-Digital Phased-Locked Loop (ADPLL) with fast-locking is proposed. The structure and locking method are different from the traditional ADPLLs. The Control Circuit consists of frequency compare module, mode-adjust module and control module, which is responsible for adjusting the frequency control word of digital-controlled-oscillator (DCO) by Bisection method according to the result of the frequency compare between reference clock and restructure clock. With a high frequency cascade structure, the DCO achieves wide tuning range and high resolution. The proposed ADPLL was designed in SMIC 180 nm CMOS process. The measured results show a lock range of 640-to-1920 MHz with a 40 MHz reference frequency. The ADPLL core occupies 0.04 mm2, and the power consumption is 29.48 mW, with a 1.8 V supply. The longest locking time is 23 reference cycles, 575 ns, at 1.92 GHz. When the ADPLL operates at 1.28 GHz–1.6 GHz, the locking time is the shortest, only 9 reference cycles, 225 ns. Compared with the recent high-performance ADPLLs, our design shows advantages of small area, short locking time, and wide tuning range.

Modelling and analysis of a hybrid CS-CMOS ring VCO with wide tuning range

2020 ◽  
Vol 98 ◽  
pp. 104752 ◽  
Author(s):  
M. Maiti ◽  
A. Majumder ◽  
S. Chakrabartty ◽  
H. Song ◽  
B.K. Bhattacharyya
Keyword(s):  
Tuning Range ◽  
Wide Tuning Range

Wide-tuning range Si bipolar VCOs based on three-dimensional MMIC technology

1997 ◽  
Vol 45 (12) ◽  
pp. 2436-2443 ◽  
Author(s):  
K. Kamogawa ◽  
K. Nishikawa ◽  
C. Yamaguchi ◽  
M. Hirano ◽  
I. Toyoda ◽  
...  
Keyword(s):  
Tuning Range ◽  
Three Dimensional ◽  
Wide Tuning Range
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