The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents two novel designs of SIW H-plane horn antenna which are achieved by adding different double square loops as transition structure. The double square loop and its improvement rotated double square loop are adopted to improve the mismatch between the horn and free space. By optimizing the dimensions of the double square loop structure and rotation angle, the bandwidth performance...
This paper presents a quad-lane serial link that supports virtually all data center system-side and line-side communications standards from 8.5–13 Gbps, implemented in 28 nm CMOS. The Tx is series source terminated with a 4-tap FFE. Its swing ranges from 33 mV to 1 Vppd. The Rx has CTLE, 5-tap DFE and CDR with 2x-oversampling, and baud-rate timing recovery options. At 13 Gbps, the link can equalize...
Studies have shown emerging evidence that rupture of coronary plaque containing a lipid-rich core with subsequent thrombus formation is the most frequent mechanism by which atherosclerosis leads to the acute ischaemic syndromes of unstable angina, acute myocardial infarction, and often times, sudden cardiac death. However, since the lumen is not significantly blocked in these cases, such “vulnerable”...
The design and analysis of a wideband coupled-cavity Traveling-Wave Tube (TWT) operating at 35 GHz is presented. The interaction circuit employs a novel coupled-cavity circuit, which is based on the combination of a three-slot ladder coupled-cavity slow-wave structure and round electron beam. In this paper, the high frequency properties such as dispersion characteristics, beam-wave interaction impedance...
In this paper, radiation performance of a ground radiation antenna using magnetic coupling structure is compared with a conventional planar inverted-F antenna (PIFA) in terms of the impedance bandwidth and radiation efficiency. The size of the proposed ground radiation antenna is 5 × 10 mm2, reduced up to approximately 50% while the impedance bandwidth is obtained as 560 MHz (2174∼2734MHz), improved...
In this paper, the recent research progress on the V-band traveling-wave tube in our laboratory is presented. Several robust full-metal slow-wave structures, including two circular beam structures and two sheet-beam structures, are investigated and employed to design the V-band traveling-wave tube. The corresponding operating characteristics are predicted by using the particle-in-cell method.
A novel serpentine waveguide slow wave structure (SWSWS) with caps and posts is proposed. The HFSS simulation results show that the interaction impedance is enhanced and the phase velocity is reduced over the normal SWSWS. The novel SWSWS is suitable for as the high-frequency structure of compact, linear beam devices.
The V-band frequency range is a region of the millimeter-wave spectrum that has been developed for inter-satellite communications. A 100 W V-band coupled-cavity traveling-wave tube (CCTWT) is designed using High Frequency Structure Simulator (HFSS) and particle-in-cell (PIC) code in CST Particle Studio. Hot-test simulations show that the designed V-band CCTWT produces saturated output power over 100...
An induced current magnetic resonance electrical conductivity tomography (IC-MREIT) algorithm was developed to reconstruct the anisotropic electrical conductivity distribution of the human brain. The IC-MREIT J-substitution algorithm was adopted to reconstruct isotropic conductivity which was used as the initial information to reconstruct the anisotropic conductivity distribution iteratively. The...
This paper discussed the different simply approximate calculation methods in applying the model theory to the excitation function approach in calculation of the electrical field of radio interference. If assuming that the electromagnetic field generated by radio interference propagates in the homogeneous medium, the parameter matrix of impedance and admittance will have simply forms and the components...
In order to simulate the effects of lightning and switching transients on power lines, coupling and decoupling network (CDN) is necessary for performing surge tests on electrical and electronic equipment. This paper presents a particular analysis of the circuit of CDN and design details according to the requirement of the standard IEC 61000-4-5. The CDN circuit is simulated by electromagnetic transients...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.