Telecommunications – Receiver or analog modulated signal frequency converter – Measuring or testing of receiver
Patent
1996-12-30
2000-04-18
Pham, Chi H.
Telecommunications
Receiver or analog modulated signal frequency converter
Measuring or testing of receiver
370252, H04B 1700
Patent
active
060525703
ABSTRACT:
A Received Signal Strength Indicator (RSSI) comparison circuit provides relatively error-free operation for radio communication systems using time division duplexing according to variations of received signals. The RSSI comparison circuit includes: a first comparator for receiving a received signal at a first terminal of a first comparator and for receiving a power supply voltage through first and second resistors at a second terminal thereof; a third resistor coupled between an output terminal of the first comparator and a source of the power supply voltage; a capacitor coupled between the output terminal of the first comparator and ground; a second comparator including a first terminal coupled to an output terminal of the first comparator and a second terminal for receiving the power supply voltage through fourth and fifth resistors; and a sixth resistor coupled between an output terminal of the second comparator and the source of the power supply voltage.
REFERENCES:
patent: 5450622 (1995-09-01), Vandegraaf
patent: 5617060 (1997-04-01), Wilson et al.
Pham Chi H.
Samsung Electronics Co,. Ltd.
Tran Maikhanh
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