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snyderelectronics@sbcglobal.net 626.794.7139 New Product Information: June 1, 2007 
ULTRA-MINIATURIZED UHF ANTENNA FOR 915 MHz BAND Snyder Antenna Systems is introducing its mini-size antenna for use in the UHF (902-928) band, with part number ANT-UHF-4x4-CP. The antenna was designed primarily for use in RFID applications where size and ruggedness are important factors. It has specifications equivalent to available antennas which are typically 10”x10” or 8”x20” and 2” thick, for example, but in a package which is 4”x4” by 0.6” thick. The antenna is circularly polarized and is specified with gain of 6dBic. Excellent return loss of 20 dB minimum is achieved across the band. Typical applications are for portable RFID readers or for applications where a very small, unobtrusive antenna is needed. The extreme miniaturization is achieved by fabricating the unit from a high dielectric constant, ceramic loaded organic microwave material. A low loss quadrature coupler is laminated behind the ground plane of the antenna providing excellent circularity of the pattern. The pattern shape is similar to the patch antennas which are commonly used for these applications. The antenna housing is a tough ABS plastic. Damage is unlikely even when dropped on concrete, and the sealed housing makes possible use in exposed outdoor environments. The standard connector provided is an SMA jack, but reverse polarity SMA is available if specified. Mounting is by four studs on the ground plane side.
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Snyder Antenna Systems
Voice: 626.794.7139 Fax: 626.794.8844 e-mail: snyderelectronics@sbcglobal.net
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