US Patent No. 9,288,697

WIRELESS COMMUNICATION CIRCUIT WITH A WIDEBAND RECEIVED SIGNAL STRENGTH INDICATOR


Patent No. 9,288,697
Issue Date March 15, 2016
Title Wireless Communication Circuit With A Wideband Received Signal Strength Indicator
Inventorship Peng-Sen Chen, Zhubei (TW)
Mei-Show Chen, Hsinchu (TW)
Jeng-Hong Chen, Temple City, CA (US)
Assignee MICROCHIP TECHNOLOGY INCORPORATED, Chandler, AZ (US)

Claim of US Patent No. 9,288,697

1. A wireless communication circuit with a wideband received signal strength indicator, comprising:
a front end signal processing unit, electrically connected to an antenna, configured to receive and process a wireless signal
from the antenna and to output a low frequency analog signal;

a filter unit, electrically connected to the front end signal processing unit, and configured to receive the low frequency
analog signal from the front end signal processing unit and to output a determined band signal;

a first analog-to-digital converter module, electrically connected to the filter unit, and configured to receive and transform
the determined band signal from the filter unit into a first digital signal;

a first demodulator, electrically connected to the first analog-to-digital converter module and the front end signal processing
unit, and configured to receive and demodulate the first digital signal from the first analog-to-digital converter module
and to output a first control signal;

a second analog-to-digital converter module, selectively electrically connected to the front end signal processing unit or
the filter unit, and configured to receive the low frequency analog signal from the front end signal processing unit or the
determined band signal from the filter unit, and to transform the low frequency analog signal from the front end signal processing
unit or the determined band signal from the filter unit into a second digital signal;

a second demodulator, electrically connected to the second analog-to-digital converter module, the first demodulator and the
front end signal processing unit, and configured to receive and demodulate the second digital signal from the second analog-to-digital
converter module and to output a second control signal;

a first switch, electrically connected between the front end signal processing unit and the second analog-to-digital converter
module;

a second switch, electrically connected between the filter unit and the second analog-to-digital converter module;
a third switch, electrically connected between the second demodulator and the front end signal processing unit;
a fourth switch, electrically connected between the first demodulator and the front end signal processing unit; and
a controller, electrically connected to the first switch, the second switch, the third switch and the fourth switch, and configured
to control a switching configuration of the first switch, the second switch, the third switch and the fourth switch to determine
a circuit operation of the wireless communication circuit.