Telecommunications – Receiver or analog modulated signal frequency converter – Measuring or testing of receiver
Reexamination Certificate
2011-01-18
2011-01-18
Le, Nhan (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Measuring or testing of receiver
C455S063100, C455S425000
Reexamination Certificate
active
07873339
ABSTRACT:
A test method is for determining total isotropic sensitivity (TIS) of a mobile wireless communications device using an RF source controllable to a plurality of source values having a relatively small uncertainty associated therewith. The mobile wireless communications device may includes an antenna and a RF receiver coupled to the antenna and outputting an RSSI value having a relatively large uncertainty associated therewith. The method may include measuring a sensitivity of the RF receiver, and measuring an antenna gain pattern for the antenna based upon controlling the RF source to respective source values causing the RE receiver to generate a same target RSSI value as the RF source and wireless communications device are angularly moved relative to one another to thereby reduce the relatively large uncertainty of the RSSI value. The TIS may be determined based upon the measured sensitivity of the RF receiver and the measured antenna gain pattern.
REFERENCES:
patent: 6308065 (2001-10-01), Molinari et al.
patent: 6587671 (2003-07-01), Kanago et al.
patent: 6839657 (2005-01-01), Verbeyst et al.
patent: 7369858 (2008-05-01), Backes et al.
patent: 7519329 (2009-04-01), Qi et al.
patent: 7555294 (2009-06-01), Qi et al.
patent: 7773964 (2010-08-01), Ozaki et al.
patent: 2001/0026150 (2001-10-01), Klenner
patent: 2005/0176375 (2005-08-01), Bednasz et al.
patent: 2578310 (2006-03-01), None
patent: WO2006047677 (2006-05-01), None
patent: WO2008031112 (2008-03-01), None
Foegelle,Antenna Pattern Measurement: Theory and Equations, Compliance Engineering 2002 Reference Guide, available at www.ce-mag.com/archive/02/Spring/fogelle2.html.
Wiles,CTIA test requirements cover over-the-air performance, OTA Tests, wireless Europe, Oct./Nov. 2004.
CTIA Certification,Method of Measurement for Radiated RF Power and Receiver Performance, Test Plan for Mobile Station Over the Air Performance, Mar. 2005.
CTIA Certification Program,Cellular Communications&Internet Association Method of Measurement for Radiated RF Power and Receiver Performance, Test Plan for Mobile Station Over the Air Performance, Mar. 2003.
Universal Radio Communication Tester R&S CMU200, Rohde & Schwarz, 2004, available at www.rohde-schwarz.com.
Circadiant Tech Brief,Sensitivity Measurement Algorithms, Jan. 2003.
GSM RF Performance Evaluation (Antenna Testing) Pocket Guide, Cetecom, Apr. 16, 2004.
Raadt et al.,Cryptography in OpenBSD: An Overview, In Proc. of the 1999 USENIX Annual Technical Conference, Freenix Track, pp. 93-101, Jun. 1999.
Certain Michael
Jarmuszewski Perry
Qi Yihong
Zhou Qingmai
Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
Le Nhan
Research In Motion Limited
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