Telecommunications – Transmitter – Measuring – testing – or monitoring of transmitter
Patent
1997-06-02
2000-02-15
Eisenzopf, Reinhard J.
Telecommunications
Transmitter
Measuring, testing, or monitoring of transmitter
455127, 330284, H04B 104
Patent
active
060262842
ABSTRACT:
An output control unit of a mobile communication system includes a transmit up-converter board having first and second mixers responsive to first and second oscillation frequency signals, respectively, for up-converting the frequency of a transmission signal, an attenuator installed between the transmit up-converter board and a final output terminal for controlling output of the up-converted transmission signal order to eliminate unwanted signal characteristic irrespective of amplification and attenuation when the transmission signal is up-converted for transmission and a transceiver slave control unit responsive to the second oscillation frequency signal for generating a control signal for controlling the attenuator, wherein the transceiver slave control unit utilizes an interface unit controlled to produce phase locked loop control data for controlling a local oscillator to generate the second local oscillation frequency of a designated channel, wherein the local oscillator informs the interface unit that it is locked at the designated channel's frequency; a main processor unit for detecting that the local oscillator is tuned to the designated channel in response to an output from the interface unit indicating that the local oscillator is locked at the designated channel's frequency; a control memory for storing a control voltage conversion table of digital-to-analog conversion step values, wherein the main processor unit searches for an output attenuation value of the designated channel in a channel conversion table and accesses the control version conversion table to determine a digital-to-analog conversion step value corresponding to the output attenuation value of the designated channel; and a digital-to-analog converter for converting the digital-to-analog conversion step value transmitted from the main processor unit into the control signal for controlling the attenuator.
REFERENCES:
patent: 3638122 (1972-01-01), Gibson
patent: 3732496 (1973-05-01), Boyer
patent: 4665560 (1987-05-01), Lange
patent: 4691173 (1987-09-01), Mollett et al.
patent: 4852123 (1989-07-01), Bickley et al.
patent: 5193223 (1993-03-01), Walczak et al.
patent: 5287555 (1994-02-01), Wilson et al.
patent: 5301364 (1994-04-01), Arens et al.
patent: 5321847 (1994-06-01), Johnson, Jr.
patent: 5321849 (1994-06-01), Lemson
patent: 5507022 (1996-04-01), Uomoto
patent: 5524285 (1996-06-01), Wray et al.
patent: 5630220 (1997-05-01), Yano
patent: 5732334 (1998-03-01), Miyake
Bushnell Esq. Robert E.
Eisenzopf Reinhard J.
Kincaid Lester G.
Samsung Electronics Co,. Ltd.
LandOfFree
Output control unit of mobile communication system and its contr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Output control unit of mobile communication system and its contr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Output control unit of mobile communication system and its contr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1913432