This application note describes characteristics and design challenges of metal-oxide-metal (MOM) interdigitated capacitors and circuits containing MOMs. It also explains how the MOM capacitor design can be facilitated using F3D – a parasitic extraction tool based on a random walk method. I. MOM capacitor characteristics and design challenges 1. What is a MOM capacitor? Analog integrated circuit...

developing a rapid, nondestructive and reliable method to measure moisture content of date fruit is of interest in pre- and post-harvest processes of this valuable product. throughout this research, by putting date palm fruits (cv. mazafati) in a parallel plate capacitor, the sinusoidal alternative voltage in the frequency range of 1 to 100 mhz was exerted to the dates and the response of the c...

Significant progress has been made in building large-scale superconducting quantum processors based on flip-chip technology. In this work, we use technology to realize a modified transmon qubit, denoted as the “flipmon,” whose large shunt capacitor is replaced by vacuum-gap parallel plate capacitor. We place one of qubit pads and single Josephson junction bottom chip other pad top chip, which g...

A microactuating structure with vertical polyimide hinges has been designed, fabricated and tested. Unlike traditional microactuators, which are located on the substrate surface, this new actuation mechanism is capable of producing linear motion at a point far from the substrate. This advantage can make it possible to drive other out-of-plane folded structures for on-wafer or out-of-wafer appli...

Sensors & Transducers Journal (ISSN 1726-5479) is a peer review international journal published monthly online by International Frequency Sensor Association (IFSA). Available in electronic and CD-ROM. Abstract: A novel structure with electro-mechanically tunable capacitor for RF application is presented. The suspended electrodes are designed in such a way that both are electrostaticaly displace...

Biefeld-Brown effect (B-B for short) refers to the phenomenon that when a high voltage is applied an asymmetric capacitor, capacitor generates additional force. In order explore influencing factors and series characteristics of B-B wire-plate capacitors in atmospheric pressure, set experimental devices with adjustable parameters was designed. Based on this device, effects different lengths, pow...

Electrostatic actuation of motion is commonly used in resonant MEMS. Drive signal feed-through is undesirable as it masks the detection signal. This paper reports analysis and demonstration of a resonant motion excitation scheme, which uses a combination of a DC bias with a sinusoidal AC voltage, frequency of which is twice of the mechanical resonant frequency. This configuration is experimenta...