Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-12-20
2005-12-20
Barnie, Rexford (Department: 2643)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S009000, C455S010000, C455S504000
Reexamination Certificate
active
06978131
ABSTRACT:
An apparatus for testing a cellular phone comprising an RF signal generator (122) for transmitting an RF signal (RF10) to said cellular phone, said RF signal generator receiving an input digital signal (DSIG10) which determines the characteristics of the RF signal, means (112, 116) for providing said input digital signal comprising means for receiving a digital signal (DSIG4, DSIG5), and at least one set of digital means, each set (A, B, C) of digital means comprising:a first digital means (200, 201, 202) to provide a first digital signal element relating to a first characteristic of said RF signal, anda second digital means (MA, MB, MC) to provide a second digital signal element relating to a second characteristic of said RF signal, anda means (203) to combine said digital signal elements to provide said input signal to said RF signal generator, said first, second and third characteristics comprise phase, amplitude and delay respectively. Thus the signal processing is carried out in the digital phase which is more easily controlled.
REFERENCES:
patent: 4658436 (1987-04-01), Hill
patent: 4669091 (1987-05-01), Nossen
patent: 5875216 (1999-02-01), Martin
patent: 6687500 (2004-02-01), Causey
Kall J: “The GSM System Simulator” Proceedings of the European Conference on Electrotechnics. (Eurocon), US, New York, IEEE, vol. CONF.8, 1988, pp. 478-481, XP000010527, p. 478, column 1, paragraph 1 -p. 479, column 2, paragraph 1 p. 480; figures 1-3.
Anritsu Limited
Barnie Rexford
Fliesler & Meyer LLP
LandOfFree
Testing mobile phones does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Testing mobile phones, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Testing mobile phones will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3465825