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With the delivery to the Army Technological Center (CTEx) of the first prototypes of the radiofrequency (RF) and power supply modules of the Defense Software-Defined Radio Project (RDS-Defense), an important stage of this project was completed - which consisted of the construction of the radio developed for the Ministry of Defense, through a partnership between CPqD, AEL Sistemas and CTEx itself. The delivery took place in December and was made by AEL, a company that operates in the areas of defense, space and public security.
 
The first versions of the RF modules were released, in the HF and V/UHF bands, and power supply, which are now undergoing acceptance tests at the CTEx (preliminary tests indicated that the prototypes delivered meet the specifications provided for this phase of the project). “The development of the prototypes of these modules was the main focus of this stage of the RDS-Defense project, in which the CPqD has participated since 2013, and which aims to promote interoperability in radio communications in the Armed Forces of Brazil”, says Rafael Moreno , Wireless Connectivity Solutions Manager at CPqD.
 
The Software Defined Radio concept allows generic equipment, with more flexible RF interfaces, to operate in different frequency bands and according to a variety of existing communication protocol standards. For this, the components of the radio communication system (modulators/demodulators, mixers, filters, amplifiers, etc.), usually in hardware form, are implemented by software in computers or embedded systems. This makes the radio system programmable, safe and easy to operate.
 
In the case of RDS-Defense, the requirements specified by CTEx include, among others, the guarantee of interoperability in the HF, VHF and UHF bands and waveform portability. CPqD was responsible for developing the prototype of the module in the V/UHF band (as a subcontracting scope to AEL). “Given the criticality of the RF and power modules for the RDS-Defense, this was a challenging project in terms of deadlines and expectations of results, but which further reinforced our partnership with AEL and, mainly, with CTEx” , emphasizes Moreno.
 
According to CTEx, the delivery of the prototypes is an important milestone of the project, since both modules are functional, which will allow the execution of the integration phase with the other modules of the RDS-Defense, throughout 2019.
 
RDS-Defesa is a broad national research and development program, under the responsibility of CTEx, whose objective is to carry out the development of radios for the tactical communications of the Armed Forces of Brazil. It has the support of the Ministries of Defense (MD) and of Science, Technology, Innovations and Communications (MCTIC) – the latter, through the Financier of Studies and Projects (FINEP).

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