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Design one-dimensional antenna array of eight-elements using composite materials for wireless imaging transmission system is proposed in this paper. Firstly, the single element is designed to resonate at Zeroth-order using a pair of Double positive (DPS) and Epsilon negative (ENG) materials meta-structured transmission line (MTL). Secondly, using seven of 1:2 T-Junction power dividers based on microstrip...
Radio-frequency identification (RFID) systems have been employed for managing items in the closed spaces of construction machinery. In this paper, two horizontal polarization antennas, including a loop antenna and monopole antenna, are employed in an RFID system to investigate the radio transmission characteristics in a closed space.
In order to obtain metal-insensitive antenna for closed-space wireless communications, the impedance characteristics of U-shaped folded monopole antenna is investigated in detail. The simulated and measured results show that the proposed higher impedance model has stronger metal-insensitiveness than the conventional middle impedance model. The simulated results show that the antenna gains of higher...
In this paper, a liquid metal based antenna for wearable applications is presented. The proposed solution can be used as the basis for flexible and stretchable antennas. The concept has been prototyped in a loop antenna, using silicon tubing of a diameter of 1.5mm in diameter, in which Liquid Metal is injected. The antenna operational frequency has been initially tuned to 868 MHz, however the antenna...
A dual-band printed antenna with metal back-cover for WBAN applications is proposed. A FR4 substrate with T-shaped coupled feed structure is placed under the metal back-cover. At first, a slot antenna operating at 2.45 GHz is designed on the metal back-cover. In order to enhance the bandwidth in 2.45 GHz ISM band, two parasitic elements connected to the ground is added nearby the feed structure. They...
A wideband on-chip antenna for the frequency range of 160GHz to 200 GHz has been developed and taped out in the IHP SG13 process. Simulation results show a maximum absolute gain of 2.2 dBi at 200 GHz. The antenna is designed for high-speed board-to-board communication.
This paper presents an on-chip bow-tie antenna that will be used for high-speed short-range communication between computer chips. The antenna design with a size of less than 1.5mm2 has been tailored for a SiGe technology and was successfully tapped-out. An investigation of the influence of the thickness of bulk-Si on the antenna's performance is presented.
In this study, High Impedance Surface (HIS) structures are used to reduce the interaction between a wireless antenna and its user. Especially, T-Slot HIS structure is designed for 1.8-GHz-band wireless products. The performance of HIS is investigated by the reflection phase method. The new test method is also proposed to verify the performance of HIS by using Arch method. In the experiment, the high...
In this paper, we propose a novel ultra-wideband planar inverse-F antenna (PIFA) using periodic metal patches ground plane. By applying the capacitive compensation for the input impedance of the PIFA in higher frequencies, the proposed PIFA has a working frequency band from 2.3 GHz to 9.0 GHz. The effect of geometric parameters of the periodic metal patches and antenna height on antenna performance...
A simulation-based feasibility study of an intra-chip wireless interconnect system is presented. The wireless interconnect system is modelled in a 250 nm standard complementary metal-oxide semiconductor (CMOS) technology operating at typical conditions. A finite element method (FEM) based 3-D full-wave solver is used to perform the electromagnetic field analysis. In the field analysis, the effects...
Bridging IEEE 1394 buses is becoming important since it can be used to provide wireless connectivity among 1394 devices. Unfortunately, existing bridge mechanisms, such as the IEEE 1394.1 bridge and the transparent bridge, have practical limitations. The former does not support interoperability with legacy 1394 devices and the latter requires a new hardware chipset for bridge implementation. We thus...
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