NDLI: 4-channel/antenna multi-band RF transmitter operating from 525 MHz to 6 GHz

Content Provider	IEEE Xplore Digital Library
Author	Fikar, S. Bogenberger, R. Scholtz, A.L.
Copyright Year	2008
Description	Author affiliation: Vienna Univ. of Technol., Wien (Fikar, S.; Scholtz, A.L.) \|\| BMW Group Res. & Technol., Munich (Bogenberger, R.)
Abstract	A multi-band transmitter front-end featuring four channels in the range from 525 MHz to 6 GHz is presented. This design is perfectly suited for convenient integration into software defined radio (SDR) applications . The transmitter features a shared selectable low phase-noise local oscillator (LO) for carrier frequency generation and 4 direct conversion I/Q-modulators that meet the specifications for spread spectrum (e.g. CDMA2000, UMTS) and OFDM(A) (e.g. WiMAX) systems. The four I/Q channel inputs are designed to be controlled by A/Dconverters. So the channels can be used for different subchannels, operated as MIMO/diversity transmitter, used for digital beam-forming or for a combination of these possibilities. The loosely packed prototype circuit has been designed on a sixlayer PCB that measures less than 40 times 80 mm without baseband connectors but including powerful voltage regulators and is thus smaller than an actual mobile handset. For phase or error vector magnitude (EVM) critical systems (especially) in the upper bands, the four transmit paths have been designed for precisely matched delays and transmit powers.
Starting Page	182
Ending Page	185
File Size	342804
Page Count	4
File Format	PDF
ISBN	9782874870088
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-27
Publisher Place	Netherlands
Access Restriction	Subscribed
Rights Holder	EUROPEAN MICROWAVE ASSOCI
Subject Keyword	Radio frequency Local oscillators Transmitting antennas Radio transmitters 3G mobile communication Spread spectrum communication WiMAX Frequency conversion Application software Software radio
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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