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Wi-sys Communications Inc.

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Wi-Sys Communications Inc. WS2801 802.11b/g Bi-Directional Amplifier Application: ♦ Increase the range and data rate of 802.11 b/g wireless network Features: ♦ ♦ ♦ ♦ ♦ ♦ 12 dB transmit gain 10dB receive gain Automatic 1 S Rx/Tx switching 20dBm max power out of amplifier Tx/Rx path bandpass filtering DC power supplied via coaxial cable The WS2801 is to be used in conjunction with an external antenna to extend the range of an 802.11b/g wireless network as well as increase the communications channel signal to noise ration to maximize your network data rates. The WS2801 Bi-Directional amplifier with 10dB net receive gain and 12dB transmit gain allows for greater cable lengths between your antenna and the host 802.11b/g device. The RF power sense automatically switches the amplifier between receive and transmit in under 1uS when levels greater than 0dBm are applied to the radio port. The amplifier’s automatic gain control limits the RF level delivered to the antenna to +20dBm. WS2801 dimensions (in inches) Wi-Sys Communications WS2801 Bi-Directional Amplifier RF level detector A RF level detector B Tx bandpass filter Coupler A combiner/ splitter PA Coupler B Transmit Path To 802.11 Hardware To A ntenna RF Switch Rx bandpass filter Recieve Path LNA Figure 1. Bi-Directional Amplifier Block Diagram Figure 2. Typical System. Note: The marketing, sale, and use of power amplification devices such as the WS2801 are subject to FCC Part 15 rules and regulations. These devices may only be used in complete certified systems consisting of an intentional radiator, an external radio power amplifier and an antenna such as the one shown in Figure 2. Technical Specifications Transmit Electrical ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ Transmit Gain: 12dB Max Output Power: +20dBm Min. RF level (radio port): 0dBm Max. RF level (radio port): 20dBm Rx/Tx switching time: 1uS Current: 250mA max (transmit) Supply Voltage: 5Vdc (via coaxial cable) Connectors: SMA female VSWR (50ohm): 1.5 max both ports Receive Mechanical ♦ ♦ ♦ ♦ ♦ Dimensions: 73mm x 39.5mm x 25.5mm (2.85” x 1.55” x 1.0”) ♦ Weight: 30g (2.4 oz) Receive Gain: 10dBm Max RF level (antenna port): -10dBm Noise Figure: < 2dB Tx/Rx switching time: 1uS WS2801 (Transmit Amplifier) 25 20 Pout (dB) 15 10 5 0 -5 -20 -15 -10 -5 0 5 10 15 20 Pin (dB) Figure 3. Transmit Amplifier: Power in vs. Power out Wi-Sys Communications Inc. 31B Richardson Side Road Ottawa, ON K2K 0A1 Canada Tel 613.254.7386 Fax 613.254.7388 [email protected] www.wi-sys.com 25