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.
A low phase noise substrate integrated waveguide (SIW) oscillator based on complex quality factor (Qsc) is presented. The oscillator employing a fourth-degree cross-coupled bandpass SIW filter is designed at the oscillation frequency for the feedback loop as a frequency stabilization element. In this paper, the peak frequency of the complex quality factor (Qsc) is adopted for oscillator design instead...
Achieving the foreseeable high bandwidth and high data rate required for over 100 billion estimated data hungry devices in 2020 and beyond is the major goal of 5G technology. The synergy between millimeter-wave and massive MIMO technology in mobile communication will enhance the actualization of 5G systems. However, Channel behavior is not well understood for wireless multiple-access communications...
A novel single-edge explicit pulsed JKL flip-flop (S-JKL) and dual-edge explicit pulsed JKL flip-flop (D-JKL) are designed with Carbon Nanotube Field Effect Transistor (CNFET). Firstly, a single-edge pulsed generator (S-PG) is designed. Then combined with a ternary JKL latch, a S-JKL is obtained; D-JKL is designed by replacing S-PG with double-edge pulsed generator (D-PG). The circuits possess the...
This paper presents a radar simulation system based on the path files. The geocentric coordinate system was converted to the earth-rectangular coordinate system. We can obtain the information of the target's position and velocity by complex radar signal processing. The simulation results are consistent with the actual value.
A 10-bit, 100MS/s digital-to-analog converter (DAC) is designed in a standard 0.18μm CMOS process, where a segmented current-steering technique is employed. Through elaborative comparison among different decoding strategies, a “6+4” segmented architecture is used to obtain a balance between area cost and performance. In order for excellent performance, an array of current sources based on a regulated...
This paper proposes a data Cache optimization method for coarse grain reconfigurable architecture for multimedia applications to improve the data flow of the reconfigurable system with low on-chip memory cost, including the novel data Cache structure and the related Cache management strategy, especially the updating method for the data Cache. The proposed data cache structure has been adopted in a...
In this paper, a high gain receiver front-end is proposed. The full-wave analysis method is used to simulate the PCB with box. Combined with electromagnetic field simulation, the front-end circuit electrical specifications are analyzed by ADS. According to the simulation, the receiver front-end is fabricated and tested. The test results are agreed with the simulation. The working bandwidth is about...
Compressed sensing (CS) is an emerging technology that can be applied to impulse radio ultra-wideband (IR-UWB) receivers. CS represents an attractive solution for its capability of recovering a signal from a small number of measurements using sub-Nyquist sampling rate analog to digital converters (ADC). In this paper we investigate practical design parameters for low power CS based UWB system, including...
The radio frequency (RF) spectrum is a limited resource. Spectrum allotment disputes stem from this scarcity as many radio devices are confined to a fixed frequency or frequency sequence. One alternative is to incorporate cognition within a reconfigurable radio platform, therefore enabling the radio to adapt to dynamic RF spectrum environments. In this way, the radio is able to actively observe the...
A large quantity of disorders that occur in the gastrointestinal tract have always been challenging to be diagnosed in a complex environment inside the human body, but with the invention and development of wireless capsule endoscope. Many patients that experienced traditional treatment will perceive stupendous convenience. Such wireless capsule endoscope requires a highly accurate localization system...
This paper proposes an improved two-step weighted least squares (TSWLS) algorithm for target location using time difference of arrival (TDOA) with sensor position errors. The performance of the TSWLS method is improved in a simple way through re-selecting reference sensor and rotating co-ordinate system, and the improved TSWLS(I-TSWLS) algorithm remains to be closed-form and approximately efficient...
In this paper, a multichannel energy detection (MED) receiver based on nonlinear square law (SL) technology is proposed for ultra-wideband (UWB) system. By using a group of band-pass filters, the received signal processed by SL device is separated into multiple channels, and then the channel with serious narrow band interference (NBI) will be omitted to improve the NBI mitigation ability of the receiver...
PCM/FM is a kind of system used in telemetry. In order to meet the needs of the future high-speed telemetry program, this paper studies the design of the 10K to 10M rate universal telemetry system. As the digital technology is more stable and flexible than the analog technology, this paper uses the full digital frequency synthesis technology to achieve PCM/FM modulation. In the digital implementation...
Aiming at the blind detection of the air quality monitoring system, based on cluster processing of Wireless Sensor Network, combined with WSN blind detection internal model in literature, this paper proposes self-regulating mutation differential evolution to restore signals of reference sensor, then uses newly-constructed model to experiment on the system. Simulation demonstrates that compared with...
This paper presents a 1–6GHz ultra broadband multiple-channel integrated receiver. The total dimension of the receiver with 7 channels is 200×220×26mm3. The noise figure of the receiver is less than 2.5dB, the harmonics suppression is greater than 47dBc, the amplitude consistency of the channels is better than 1dB, and the phase consistency of the channels is less than ±5°.
An ultra-wideband (UWB) millimeter-wave (mm-Wave) dipole antenna array for fifth generation (5G) communications is presented in this paper. The proposed antenna is working in the frequency range of 23–33 GHz (10 GHz bandwidth with more than 35% FBW). Ten compact UWB dipole antenna elements designed on a Rogers RT5880 substrate have been deployed along the edge region of the cell phone PCB. The feature...
The kill probability of missile to target can be effectively improved by adaptive burst delay control technique. In this paper, a typical air target was taken as an example. The simulation of the Monte Carlo statistical test was carried out by Coordination of Fuze and Worhead (CFAW) software. Genetic Simulated Annealing (GSA) hybrid algorithm was used to fit the statistical experimental results. The...
Smart homes, cars, offices and schools can significantly improve the quality of our life. The traditional networks are not sufficient to provide the service needed for these future smart management systems due to their lack of flexibility. This paper proposes an application-aware service that can select and set an alternative forwarding path based on the measurement of the Quality of Service of paths...
In order to effectively solve the instable problem of wireless signal transmission in modern architecture, the scheme of using coaxial cable to transmit 2.4GHz wireless signal is proposed. Firstly, the feasibility of wireless signal which transmit in coaxial cable is analyzed and measured. Next, the former result is compared with the typical values of propagation attenuation of wireless signal spreading...
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.