Exhibits 1 & DDWQ

5695-EX-PL-1997 Text Documents

EMS TECHNOLOGIES, INC.

1999-08-02ELS_12572

. EMS Wireless, A Division of EMS Technologies, Inc. EXHIBIT 1 General Information The antenna test range for which this Experimental License application is being submitted is intended to test antenna designs for cellular, PCS and similar communications applications in the following frequency ranges: 800 MHz — 1000 MHz 1400 MHz — 1600 MHz 1700 MHz — 2000 MHz The design, development and verification requires radiation pattern and gain meéasurements using horizontal, vertical and slant 45 degree polarizations. EMS Wireless will further the radio art through the development of various antennas which offer unique solutions to the cellular, PCS and similar communication services. EMS Wireless antennas address design issues such as pattern shaping (null fill and reduction of upper sidelobes}, polarization diversity techniques (reducing the number of antennas required per cell site} and reduction in passive intermodulation products while providing significant cost, size, weight, installation and zoning advantages. Description of Antenna Test Range The physical configuration of the antenna test range is shown in Figure 1 of this exhibit. A Scientific Atlanta mode! tower mounted on an azimuth over elevation positioner rotates the antenna—under—test (AUT}. The AUT is used as the receive antenna during pattern and gain measurements. The antenna positioner is physically located on the roof of the EMS Technologies building at 660 Engineering Drive in Norcross, Georgia. The combined height of the building, positioner and model tower is 18.3 meters above ground level. The transmitting antenna is 2.4 meters above ground level and located 49.4 meters from the AUT as indicated in Figure 1. The transmit antenna is pointed at an elevation angle of 16.5 degrees. Standard Gain Horns having maximum azimuth and elevation half—power beamwidths of 39 degrees are used for transmitting antennas. A diffraction fence (4.9 meters high by 11 meters long), constructed of metal hardware cloth stretched over a metal frame, is placed at the specular point to prevent undesired ground reflections and to prevent horizontal radiation of energy. The electrical block diagram of the antenna range is given in Figure 2 of this exhibit. The rf source is a Hewlett Packard HP—8341A synthesized sweep generator. An HP— 8510B Network Analyzer is used to control the rf source and process the received signal from the AUT. The unmodulated rf signal from the HP—8341A is fed into a Mini—Circuits 3 dB power splitter. Output port 1 of the power splitter is connected to the reference channel of the HP—8510B while port 2 is connected to the input port of the Amplifier Research model 18164 amplifier through a 153 meter length of EXHIBIT 1, FCC Form 442

. EMS Wireless, A Division of EMS Technologies, Inc. Times LMR—600 coaxial cable. The output port of this amplifier is connected to the Standard Gain Horn transmit antenna. Amplitude and phase data representing the measured antenna pattern(s) is collected from the HP—8510B via the IEEE Bus to the computer for storage and manipulation. Radiation patterns are typically measured at multiple frequencies across the band of interest in order to fully characterize the AUT. The complete frequency sweep is accomplished in approximately 10 milliseconds thus reducing the probability of interference to other services operating on or near the same frequencies. EXHIBIT 1, FCC Form 442

EXHIBIT 1 Maximum Height of Antenna Figure 1 A Antenna Range Physical Layout Scientific Atlanta Note: Drawing not to scale Model Tower \ Antenna Under T Test 18.3M Scientific Atlanta —» Antenna Positioner Transmit Antenna 660 Engineering Dr Building c ¥ Ground Level ~\/Z + /

Hewlett Packard ——4 Antenna Under Test To Computer HP—85108B IEEE BUS Network Analyzer Hewlett Packard Input Reference In HP—85 14A Port S—Parameter Test Set Hewlett Packard HP—8341A Synthesized Sweep Transmit Antenna Generator {Source) RF Out Mini—Circuits 153 meters RF in Amplifier Research RF Out Power Splitter Times LMR—600 Coaxial Cable 15164 Power Amplifier

EXHIBIT 2 Vertical Profile Antenna Test Range <——— Existing Trees Note: Drawing not to scale Maximum Height of Antenna A Existing Trees ————————» * Antenna Under Test 660 Engineering Dr Building =p=L— (Existing Building) v C v¥ w Ground K _al


Document Created: 2001-08-20 21:56:49
Document Modified: 2001-08-20 21:56:49
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