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A design of proximity coupled microstrip dipole antenna with enhanced bandwidth and gain is presented in this paper. Comparative study with coaxial fed design has been done. Also dual-frequency operation using proximity coupled microstrip dipole antenna is implemented with good bandwidth at both the frequencies.
We describe the design of a fifth order opamp-RC filter in a 65 nm digital CMOS process. Designed for a WLAN receiver chain, the baseband filter has a bandwidth of 9 MHz and features extensive use of digital hardware to correct for analog imperfections and thereby relaxing area and power requirements. Measurements show a 24 dB adjacent channel attenuation and an out-of-band IIP3 of 33 dBm. The complete...
We investigate the performance of IEEE 802.11e enhanced distributed channel access (EDCA) using real world hardware in a realistic indoor working environment. TCP streams of different priorities representing traffic types, such as FTP are tested over a wireless network test-bed. Quality of service (QoS) metrics such as throughput and delay are calculated directly from a passive capture of the channel...
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