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Ensuring Smart Passive Keyless Entry Transponder Is Reliable
By: by Youbok Lee and James B. Nolan Microchip Technology Inc.
The challenging task for a passive keyless entry system design engineer is reliably detecting the base station command in any possible operating condition while still maintaining all other design parameters, such as battery power usage and the physical size of the antenna. ...
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RKE - Opening More than Doors
By: by Tom Tang Lear Corporation
The history of remote keyless entry products has been characterized by the increase of range performance from a few meters back in the 1980s to a few hundred meters today. The key milestones of RKE product history can be summarized as follows: radio frequency technology replacing the infrared technology, VHF/UHF band replacing the 27 MHz civil band, and the superheterodyne receiver replacing the super-regenerative receiver. Now, RKE engineers face a new challenge, namely to overcome the range limitation of today's RKE technology. Is it possible to achieve more than 500 meters of range as contrasted to today's technology?...
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