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Ray tracing is a useful tool to model the spatial and temporal propagation parameters of electromagnetic radiation. The model can normally improve by the channel sounding. However, discrepancies may arise between the channel sounding and ray-tracing model due to it needs a wide bandwidth to differentiate the incoming signals, also the antenna radiation pattern may change dramatically over this wide...
A simple two-element integrated array, capable of dual-mode operations, is investigated. With the feeding network unchanged, the integrated array is identical to a reflection-type retrodirective array in one band, but automatically reconfigures as a beam-switching array with mutually orthogonal sum and difference patterns in the other band. The core building block is a dual-mode coupler, which functions...
In this paper, the antennas performances for the 5.2 GHz 802.11n network are compared by three different access points with 3 antenna configurations based on the simulated throughput derived from measurements in a two-storey house. The aim here is to outline a methodology for access point performance taking account client orientation, MIMO data streams that can be supported and finally a total throughput...
In this paper, the antenna performance for the 5.2 GHz 802.11n network is compared for four different access points with 3 antenna configurations based on the simulated throughput derived from measurements and a ray-tracing model in a two-storey house. The aim here is not only outline a methodology for access point performance that taking account the user equipment orientation, MIMO data streams that...
In this letter, a new band-notched ultra wideband (UWB) antenna based on electromagnetic band gap (EBG) technology has been designed and analyzed. The EBG structure is applied in a UWB antenna to create a stop band and it is located between the microstrip feedline and the ground plane. EBG characteristics, such as the reflection phase and the transmission coefficient S21, are studied. At the end of...
Ray tracing is a technique often used to model indoor and outdoor environments. In order to improve the parameters used in ray tracing, measurements from channel sounding can be employed to test algorithms and build more accurate models of the channel. However, channel sounding can be limited as the antenna radiation pattern may change dramatically over a wide frequency span. As a consequence, discrepancies...
A novel circular slot antenna is proposed for wireless local area network (WLAN) applications. By applying a monopole on the opposite side of the circular slot etched on the ground plane, a resonant frequency band is excited at about 2.4 GHz, with impedance bandwidth (return loss > 10 dB) from about 2.3 to 2.8 GHz, which covers WLAN 2.4 GHz and worldwide interoperability for microwave access (WiMAX)...
Built in Bluetooth wireless transmission allows easy GPS sensitivity record on the go without the hassle of external USB connections and wire cable anytime, anywhere. The mobile phone under test of far-field range testing has been the plan at the Cellular Telecommunications & Internet Association (CTIA) certification program test requirements for performing receiver performance measurement.
A compact dual-band antenna with modified open U-shaped slot is proposed. The antenna is mainly composed of a patch with modified open U-shaped slot and a T-shaped feed line. The dual-band characteristic is obtained by folding the upper strips of the patch. The proposed antenna is fabricated and tested. The measured results show that the proposed antenna covers 2.38–2.52 GHz and 5.0–6.1 GHz with S11<−10...
A novel dual-band E-shaped monopole antenna is proposed for wireless applications in the 2.4/5.2GHz bands. To obtain the dual-band characteristic, two L-shaped stubs are added to a traditional monopole antenna. The proposed antenna is fed by coplanar waveguide. The antenna is simulated and measured. The measured results show that operating bands of the proposed antenna cover 2.3–2.7GHz and 5.0–5.4GHz...
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