Our Energy Storage Solutions
Discover our range of innovative energy storage products designed to meet diverse needs and applications.
- All
- Energy Cabinet
- Communication site
- Outdoor site
A Programmable Capacitance-to-Voltage Converter for MEMS …
A Programmable Capacitance-to-voltage converter for MEMS capacitive sensors is proposed. The main circuit consists of balance capacitor arrays, capacitance transimpedance amplifier, sample/hold, low pass filter, and output buffer. Capacitance-to-voltage converter detects the change in capacitance between two capacitors and …
Design, fabrication and characterization of compact 4-bit RF …
This paper reports on the design and fabrication of a 4-bit switched capacitor bank designed to operate over the frequency range of 3-10 GHz with a tuning range of up to 10:1. An …
Tunable RF MEMS Filters: A Review | SpringerLink
RF MEMS capacitor banks mounted on a combline cavity resonator resulted in Q u of 1,300–374 at 2.50–2.39 GHz []. ... MEMS components have slower tuning speed compared to other switch technologies, limiting …
Design of MEMS capacitive comb accelerometer with perforated proof mass for seismic applications …
Capacitive accelerometers with comb-drives i.e., interdigitated electrodes are used in a variety of MEMS sensors for inertial applications (Scudero et al., 2018). MEMS accelerometers do not need a fixed reference for the measurement, they are used for the measurement of linear motion, and vibration ( Varanis et al., 2018 ).
Radio-frequency microelectromechanical system
Fig. 1: (a) A capacitive fixed-fixed beam RF MEMS switch, connected in shunt to a CPW line.(b) An ohmic cantilever RF MEMS switch, connected in series to a microstrip line. A radio-frequency microelectromechanical system (RF MEMS) is a microelectromechanical system with electronic components comprising moving sub …
Tunable MEMS Capacitor Tutorial Model
Tunable MEMS Capacitor. Application ID: 123. The electrostatically tunable parallel plate capacitor in this example is a typical component in various MEMS devices for radio frequencies that range between 300 MHz and 300 GHz. You can modify the distance between the two plates, as the applied voltage changes, through a spring attached to one …
Design and Test of a High-Sensitivity MEMS Capacitive …
Abstract: This paper presents the design, fabrication, and test of a high-sensitivity micro-electrical-mechanical system (MEMS) capacitive resonator specifically designed for …
One-Chip Integration of RF MEMS Switched Capacitor and …
This study presents a single-chip integrated reconfigurable 180-nm complementary metal–oxide–semiconductor (CMOS) power amplifier (PA) with a radio frequency micro-electro-mechanical system (RF MEMS) switched capacitor, which is highly useful for advanced wireless mobile communication systems. The proposed …
Analytical design of MEMS variable capacitors based on shaped …
A variable capacitor is one of the widely used components in radio frequency (RF) circuits. Variable capacitors can benefit from the microelectromechanical systems (MEMS) technology, to be equipped with attractive characteristics such as high quality factor and wide tuning range. One of the design goals for MEMS varactors has …
Step‐controllable RF MEMS tunable capacitor with ultra‐wide …
Step-controllable RF MEMS tunable capacitor with ultra-wide tuning range using netted metal membrane H. Cho, J. Kim and J.Y. Park In this Letter, step-controllable radio frequency (RF) micro-electro-mechanical systems (MEMS) tunable capacitor with ultra-wide
Design and simulation of a wide-range variable MEMS capacitor …
In this paper, we present a new structure of a micromachined tunable capacitor using a combination of piezoelectric and electrostatic parallel-plate actuators. Electrostatic parallel-plate capacitors have a low capacitive tuning ratio due to the "pull-in" instability. Therefore, to increase the capacitive tuning ratio, an electrostatic parallel-plate …
RF-MEMS capacitive switches: enabling transition towards 5G/B5G applications
This paper presents design and analysis of radio frequency microelectromechanical (RF-MEMS) shunt capacitive switch for millimeter wave (mmWave) frequencies. The device performance is tuned at high frequencies to meet the criteria of 5G and beyond, the pillar of all current technology paradigms. The research investigation …
Design and simulation of a variable MEMS capacitor …
The variable MEMS capacitor is the best alternative to the solid-state varactors. The MEMS tunable capacitor has the advantage of lower loss, lower parasitic, low-voltage operation and potentially larger …
Design analysis and simulation of a digital RF MEMS varactor with high capacitive …
This work presents a variable RF MEMS capacitor based on five cantilever shunt switches for the first time. Conceptually, the proposed varactor design comprises five identical cantilever shunt switches, which allow the creation of 32 discrete capacitance values ranging from 0.091 to 6.04 pF. The latter translates to a tuning range …
3D HfO2 Thin Film MEMS Capacitor with Superior Energy …
Moreover, the 3D capacitor exhibits excellent temperature stability (up to 150 °C) and charge-discharge endurance (10 7 cycles). The results indicate that the 3D HfO 2 thin film MEMS capacitor has enormous potential in energy storage applications in harsh environments, such as pulsed discharge and power conditioning electronics.
Design analysis and simulation of a digital RF MEMS varactor …
2 Design of the RF MEMS capacitor. The proposed MEMS varactor consists of five fixed parallel-plate capacitors and operates as a MEMS capacitive shunt …
Tunable MEMS Capacitor for RF Applications
Tunable MEMS Capacitor for RF Applications Shriram H S1, Tushar Nimje1, Dhruv Vakharia1 1BITS Pilani, Rajasthan, India Abstract Introduction: Radio Frequency (RF) MEMS devices have emerged to overcome the problem of high losses associated with semiconductors at high frequencies. There are various RF MEMS devices
MEMS Pressure Sensors | The Design Engineer''s Guide | Avnet …
MEMS Pressure Sensors | The Design Engineer''s Guide
A Review of MEMS Capacitive Microphones
This review collates around 100 papers that developed micro-electro-mechanical system (MEMS) capacitive microphones. As far as we know, this is the first comprehensive archive from academia on this versatile device from 1989 to 2019. These works are tabulated in term of intended application, fabrica …
MEMS capacitive accelerometer: A review
MEMS capacitive accelerometers are the most widely used sensor type among MEMS accelerometer ... Application of MEMS accelerometer to geophysics. International Journal of the JCRM, 4, 33 ...
MEMS capacitive accelerometer: dynamic sensitivity analysis based on analytical squeeze film damping and mechanical thermoelasticity approaches ...
In this work, we adopt a semi-analytical model to study a capacitive MEMS accelerometer based in silicon (Si). Such model takes into account the thermoelastic stiffness and linear expansion coefficients of anisotropic bulk Si. In addition, an analytical damping model, derived from the Reynolds equation, is incorporated in the model, in …
A Capacitance-To-Digital Converter for MEMS …
The use of MEMS sensors has been increasing in recent years. To cover all the applications, many different readout circuits are needed. To reduce the cost and time to market, a generic capacitance-to-digital converter (CDC) …
Tuneable RF MEMS capacitors based on electrostatically …
MEMS technology has demonstrated to be able to pro-vide potentially high quality components for complex passive RF and microwave devices such as capacitors and inductors [1, 7–9]. Tuneable RF MEMS find applications in components such as VCOs