Electronically Tunable Allpass Filter Using Voltage Variable Inductor and Linear VCO Design

2021 ◽  
pp. 1-6
Author(s):  
Koushick Mathur ◽  
Rabindranath Nandi
Keyword(s):  
Variable Inductor ◽  
Electronically Tunable ◽  
Allpass Filter

scholarly journals Electronically tunable allpass filter: linear VCO design

2016 ◽  
Vol 13 (6) ◽  
pp. 20160059-20160059 ◽  
Author(s):  
Rabindranath Nandi ◽  
Koushick Mathur ◽  
Sandhya Pattanayak
Keyword(s):  
Electronically Tunable ◽  
Allpass Filter

scholarly journals A Study on the Variable Inductor Design by Switching the Main Paths and the Coupling Coils

Electronics ◽  
2021 ◽  
Vol 10 (15) ◽  
pp. 1856
Author(s):  
Yen-Chung Chiang ◽  
Juo-Chen Chen ◽  
Yu-Hsin Chang
Keyword(s):  
Design Method ◽  
The Other ◽  
Cmos Process ◽  
Mos Transistors ◽  
Quality Factors ◽  
Process Technology ◽  
Variation Versus ◽  
Variable Inductor ◽  
Metal Layers ◽  
Coupled Coils

In a radio frequency (RF) system, it is possible to use variable inductors for providing tunable or selective frequency range. Variable inductors can be implemented by the microelectromechanical system (MEMS) process or by using transistors as switches to change the routing of coils or coupling quantities. In this paper, we investigated the design method of a variable inductor by using MOS transistors to switch the main coil paths and the secondary coupled coils. We observed the effects of different metal layers, turn numbers, and layout arrangements for secondary-coupled coils and compared their characteristics on the inductances and quality factors. We implemented two chips in the 0.18 m CMOS process technology for each kind of arrangement for verification. One inductor can achieve inductance values from about 300 pH to 550 pH, and the other is between 300 pH and 575 pH, corresponding to 59.3% and 62.5%, respectively, inductance variation range at 4 GHz frequency. Additionally, their fine step sizes of the switched inductances are from 0.5% to 6% for one design, and 1% to 12.5% for the other. We found that both designs achieved a large inductance tuning range and moderate inductance step sizes with a slight difference behavior on the inductance variation versus frequency.

Electrolytes for Reversible Zinc Electrodeposition for Dynamic Windows

2021 ◽  
Author(s):  
Desmond C Madu ◽  
Shakirul M Islam ◽  
Hanqing Pan ◽  
Christopher Barile
Keyword(s):  
Aqueous Electrolytes ◽  
Zinc Electrodeposition ◽  
Metal Electrodeposition ◽  
Electronically Tunable

Reversible metal electrodeposition is a promising approach for the construction of dynamic windows with electronically tunable transmission. In this manuscript, we study a series of aqueous electrolytes that support reversible...

Sign in / Sign up

Export Citation Format

Share Document