Fully Embedded High Q Passives and Band Pass Filters for Low Cost Organic RF SOP (System on Package) Applications

2007 ◽  
Author(s):  
Seung J. Lee ◽  
Hwan H. Lee ◽  
Jae Y. Park
Keyword(s):  
Low Cost ◽  
High Q ◽  
Band Pass

Graded-lattice AAO photonic crystal heterostructure for high Q refractive index sensing

RSC Advances ◽  
2015 ◽  
Vol 5 (88) ◽  
pp. 71770-71777 ◽  
Author(s):  
Jungmin Lee ◽  
Kyuyoung Bae ◽  
Gumin Kang ◽  
Minjung Choi ◽  
Seunghwa Baek ◽  
...  
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Anodic Aluminum Oxide ◽  
Low Cost ◽  
Refractive Index Sensor ◽  
High Q ◽  
Refractive Index Sensing ◽  
Anodic Aluminum ◽  
Graded Lattice ◽  
Photonic Crystal Heterostructure

We present a low-cost and versatile high Q colorimetric refractive index sensor based on anodic aluminum oxide (AAO) graded-lattice photonic crystal heterostructure (PCH) template controlled by voltage pulse and electrolyte temperature.

scholarly journals A comparative analysis of two gain- and offset-compensated switched-capacitor integrators

2002 ◽  
Vol 15 (2) ◽  
pp. 295-305
Author(s):  
Nikolay Radev ◽  
Kantcho Ivanov
Keyword(s):  
High Performance ◽  
Building Blocks ◽  
Switched Capacitor ◽  
Central Frequency ◽  
High Q ◽  
Offset Voltage ◽  
Dc Gain ◽  
Band Pass ◽  
Analytical Expressions ◽  
The Ideal

Two high-performance switched-capacitor (SC) integrators which use different approaches for the compensation of the operational amplifier finite dc gain and offset voltage are considered. Analytical expressions for the gain, phase and offset voltage errors of the Baschirotto-90 integrator are derived and compared with the corresponding errors of the Shafeeu-91 integrator. Both the integrators are used as building blocks of a high-Q band pass SC biquad. The resultant filters are compared in terms of the percent deviations from the ideal case of the central frequency and the quality factor. Subsequently, the slight shift in the frequency response of the biquad with Shafeeu-91 integrator is eliminated by modifying the values of two capacitors .

scholarly journals Implementation of RC Oscillator with High-Q Frequency Selection using CCCII.

2019 ◽  
Vol 8 (12) ◽  
pp. 4470-4477
Keyword(s):  
Second Generation ◽  
Current Mode ◽  
Cmos Technology ◽  
Current Conveyor ◽  
Band Pass Filter ◽  
Phase Oscillators ◽  
Pass Filter ◽  
High Q ◽  
Voltage Mode ◽  
Band Pass

This article given a second generation current controlled current conveyor positive (CCCII+), second generation current controlled current conveyor negative (CCCII-), Quadrature oscillator with high-Q frequency choosing network and implementing completely different phase oscillators by employing (CCCII+) positive and (CCCII-) negative, and high band pass filter network, the approach is predicted on the CMOS technology . The root of this concept is, considering a customary voltage mode oscillator which consists of band pass filter with prime quality issue (high-Q) and voltage mode amplifier is transfigure into current mode oscillator by replacing tans-conductance amplifier. Because the loop of the oscillator is has lavish selectivity, the oscillator process less distortion. In addition 3dB bandwidth, oscillating condition, oscillation frequency of the oscillator could linearly, independently and electronically be tuned by adjusting the bias current of the (CCCII±)[1], lastly different simulations have been carried out to verify the linearity between output and input ports, range of frequency operations. These results can justify that the designed circuits are workable.

scholarly journals Antiresonant Reflecting Guidance and Mach-Zender Interference in Cascaded Hollow-Core Fibers for Multi-Parameter Sensing

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4140
Author(s):  
Maoxiang Hou ◽  
Jun He ◽  
Xizhen Xu ◽  
Ziliang Li ◽  
Zhe Zhang ◽  
...  
Keyword(s):  
Transmission Loss ◽  
Low Cost ◽  
Gas Pressure ◽  
Band Pass Filter ◽  
Hollow Core ◽  
Pass Filter ◽  
Multiple Parameters ◽  
Linear Relationships ◽  
Band Pass ◽  
Spectral Ranges

We propose and demonstrate a cascaded hollow-core fiber (HCF) device for multi-parameter sensing based on the combination of antiresonant reflecting guidance (ARRG) and Mach-Zender interference (MZI). The device was fabricated by splicing two sections of HCF together. Two sets of fringes, which have different free spectral ranges, were generated from ARRG and MZI, respectively, and were aliasing in the transmission spectrum. The two sets of fringes were then separated using a band pass filter and a Gaussian fitting technique. The wavelengths at two transmission loss dips formed by ARRG and MZI exhibit a temperature sensitivity of 14.1 and 28.5 pm/°C, and a strain sensitivity of 0.4 and −0.8 pm/με, respectively. By using a crossing matrix with differences sensitivities, the cross-sensitivity between temperature and strain can be solved. The gas pressure response of the cascaded HCF device was also tested up to 300 °C, and linear relationships between the gas pressure sensitivities and temperature were found, which can be used in gas pressure application in various temperatures. Moreover, the proposed cascaded HCF sensor is compact, low cost, and simple for fabrication, and hence offers a promising way for the simultaneous measurement of multiple parameters, such as temperature, strain, and gas pressure.

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