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In passive remote sensing, the modified Stokes parameters (watt/m2) are defined in terms of electric fields (V/m) at a specific frequency, which is related to the brightness temperatures. However, brightness temperatures are defined by multiplying the specific intensity watt/m2/Hz/sr) by λ2/κ. In this work, the inconsistency of units in brightness temperatures are resolved by comparing a time-harmonic...
A novel co-planner multiple-input-multiple-output (MIMO) antenna system combined with decoupling structure for enhancing the port isolation between two antennas at penta Long-Term Evolution (LTE) bands 700MHz, 900MHz, 1800MHz, 2300MHz and 2600MHz operation in this paper. For compact single antenna, the design is used to building a single multi-band antenna with 75×18×1.6 . In the decoupling work,...
We proposed to place an RF circuit and an antenna on each side of a silicon RF chip in the 60 GHz band, respectively, and to connect between them with low loss by a coaxial-line structure using a hole opening in the chip. We fabricated a 2×2 circularly polarized patch array in an area of 5mm square on a silicon chip and had coaxial-line connection with a separated quadrature oscillator chip. However...
We proposed a low profile surface wave antenna with directional beam using micro strip element. Proposed antenna can design at the desired resonance frequency by changing microstrip length L and width W. In addition, we proposed process of design the desired resonance frequency by using some formulas. Also, we designed the antenna having the resonance frequency of 10 GHz by using proposed method ...
In this paper, a folded C-shaped monopole for WLAN/WiMAX USB dongle is proposed. The antenna is fabricated on FR4 substrate; the overall dimensions are 35 mm × 10 mm × 1.6 mm. The antenna portion is occupied by 10 mm × 10 mm, and the size of system ground is 25 mm × 10 mm. The C-shaped monopole consists of the left arm with longest length and the left arm. The left arm of the folded C-shaped generates...
In this paper, a novel compact high isolation Wireless local area network (WLAN) multiple-input-multiple-output (MIMO) antenna based on composite right-/left-handed (CRLH) is proposed. The antenna performance and field distribution are studied through simulation. The results prove that this new method can realize high isolation between antenna elements with nearly no influence on its radiation performance...
A design of MIMO antennas using two monopole structures adding a neutral line connected to ground plane for achieving better isolation is proposed and examined. The antenna uses curved C-shaped arm to resonance the bands of IEEE802.11b/g/n; another arm extended on the feed achieves the bands of IEEE 802.11a application. The overall size of the design is 45×25×1.6mm3; the occupied area of the antenna...
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