(NASDAQ: NXPI) and Volkswagen have shared early glimpses into Ultra-Wideband (
UWB) technology and its future applications.
BlueCats uses a variety of edge technologies, including
UWB, BLE, global-positioning system (GPS) sensor data and RFID.
There are many reasons for
UWB, such as comparison with others, work stress, goal setting, and role conflict (Hershcovis & Barling, 2010; Schweitzer, Ordonez, & Douma, 2004).
Finally, the optimization of Antenna 4 has been conducted in CST based on the criteria that, the reflexion coefficient is close to -5 dB over the filtered bands, while it is less than -10 dB over the rest parts of
UWB spectrum.
The
UWB MIMO antenna in [18] could achieve a mutual coupling larger than 20 dB in the entire operating band by etching a T-shaped slot as well as a narrow slot on the ground plane.
Moreover, if the third notched band acts as a spurious resonance and is not desired, one can push it up away from the
UWB band to maintain the
UWB performance of the antenna by enlarging the ratio between W2 and W1.
Therefore the optimum value of 'Wr' chosen in order to reject the WIMAX band is 1.0mm on which the antenna operates from 2.76GHz to 11.78GHz covering the entire
UWB (3.1GHz to 10.6GHz) and rejecting from 3.20GHz to 3.96GHz which covers the undesired WIMAX band (3.3GHz to 3.8GHz).
On the other hand,
UWB is lightweight platform, hence detection and interception of
UWB signal (due to the low "[T.sub.x]" power) is relatively complex Figure 3.
Microstrip band passfilters for ultra-wideband (
UWB) wireless communication.
In
UWB systems, Rayleigh pulse and Gaussian monocycle [11] are generally used as the waveforms.