In this paper, a compact ultra-wideband microstrip-fed annular ring antenna with band notch characteristics for wireless local area network (WLAN) and dedicated short-range communication (DSRC) is proposed. The proposed antenna comprises an annular ring patch and a partial ground plane with a rectangular slot. The notched frequency band is achieved by etching a partial annular slot in the lower...

Ultra wideband (UWB) radio communication is capable of a high data rate with low radiated power. A key issue for UWB design is LNA input/output matching over a wide bandwidth: 3 to 5GHz for the lower band and 3 to 10GHz for the entire band. Several UWB LNAs have been proposed in recent years. The UWB CMOS LNA presented in [1] employs a Chebyshev filter for input matching and a source follower f...

This paper demonstrates optimum receiver performance in terms of bit error rate (BER) for time hopping pulse position modulation (TH-PPM) ultra wideband (UWB) system in multiple user interference environment for indoor radio communication. Equal gain combining and selective gain combining have been demonstrated in terms of ideal RAKE (ARAKE), selective RAKE (SRAKE) and partial RAKE (PRAKE) rece...

In this paper, different 2×1 and 2×2 multiple input output (MIMO) antennas were investigated with changing substrate shapes the placing of patches on substrate, all based FR-4 are characterized by , loss a partial ground. The original antenna covered 3.4 to 13.5 GHz. best simulation results proposed MIMO received for inverted high ultra-wideband (UWB) bandwidth up 40 GHz, maximum gain was 6.51 ...

<span>In this article, a planar monopole two-element multiple input output (MIMO) array has been designed and characterized with the intention of ultra-wideband (UWB) applications. The voltage standing wave ratio (VSWR) working bandwidth (BW) 13.258 GHz between 3.394-16.652 GHz, fractional BW (FBW) 132.28% respect to center frequency 10.023 GHz. two elements MIMO are 900 polarizations mis...

Previously reported wideband CMOS low-noise amplifiers (LNAs) have difficulty in achieving both wideband input impedance matching and low noise performance at low power consumption and low supply voltage. We present a transformer noise-canceling wideband CMOS LNA based on a common-gate topology. The transformer, composed of the input and shunt-peaking inductors, partly cancels the noise origina...

This paper proposes two rectangular ring planar monopole antennas for wideband and ultra-wideband applications. Simple planar rectangular rings are used to design the planar antennas. These rectangular rings are designed in a way to achieve the wideband operations. The operating frequency band ranges from 1.85GHz to 4.95GHz and 3.12GHz to 14.15GHz. The gain varies from 1.83 dBi to 2.89 dBi for ...

This work is an exploration of the impact of interferers on an ultrawideband (UWB) transmitterreceiver link. Both narrowband and wideband (specifically, UWB) interference is considered. Two physical layer models are built and simulated. The performance metric is the link’s bit error rate (BER). For both the narrowband and UWB interferer models, the dependence of the BER on the power of the inte...

An ultra-wideband (UWB), geometrically simple, compact, and high-gain antenna with a WLAN notch band is presented for future wireless devices. The printed on the top side of Rogers RT/Duroid 5880 substrate has small dimension 10 mm × 15 0.254 mm. primary radiator proposed coplanar waveguide-fed monopole comprised rectangular-shaped structure initially modified using slot, its bandwidth further ...

The demands for broadband services by wireless communication systems are rapidly growing. An ultra wideband radio technology has become an important topic for microwave communication because of its low cost and low power consumption. The ultra wideband technology is specified the frequencies ranging from 3.1 GHz to 10.6 GHz by Federal Communication Commission (FCC), which has a bandwidth ratio ...