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A Method to Detect Narrowband Antenna Impairment on Handheld device

IP.com Disclosure Number: IPCOM000249767D
Publication Date: 2017-Mar-31
Document File: 2 page(s) / 119K

Publishing Venue

The IP.com Prior Art Database

Abstract

Such degradation may be unseen by customers and may cause customers to incorrectly interpret that the whole terminal is inoperative, rather than just the antenna. The customer may then ship a working terminal back to a service depot, resulting in increased downtime and increase maintenance or warranty cost. This problem can also more broadly apply to any radio with an antenna. This invention solves this problem by notifying the radio user about the malfunctioning status of the antenna and provides an alternative solution if the radio is a multi-antenna device.

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A Method to Detect Narrowband Antenna Impairment on Handheld device

For handheld devices that incorporate narrowband radio modules, an external “stubby” UHF antenna is

used. Since such an antenna is externally connected to the body of the terminal, it may be subjected to

physical degradation, e.g. terminal being dropped, antenna damaged internally, or connectors wearing.

Alternatively a user’s hand or body part can inadvertently be placed near an internal antenna; this can

cause the antenna performance to be degraded. This may occur in a cellular device.

Such degradation may be unseen by customers and may cause customers to incorrectly interpret that the

whole terminal is inoperative, rather than just the antenna. The customer may then ship a working

terminal back to a service depot, resulting in increased downtime and increase maintenance or warranty

cost. This problem can also more broadly apply to any radio with an antenna.

This invention solves this problem by notifying the radio user about the malfunctioning status of the

antenna and provides an alternative solution if the radio is a multi-antenna device.

This method comprises:

1. Monitoring received signal strength indication (i.e. RSSI) level;

2. Sensing RF ambient noise generated by the terminal itself and forming a minimum RSSI level;

3. Notifying users if minimum RSSI level is reached and thus indicating the occurrence of

degradation of antenna performance;

4. Sending information about degradation of antenna performance to a processor that controls the

radio and allows for power to be diverted to a secondary antenna in multi-antenna device.

The RSSI level is constantly monitored once the radio starts up but is not in active communication with a

base station. Alternatively, RSSI can...