MAMATHA KANMATHAREDDY

• Developed loyal and highly satisfied customer base through regular consultations with customers and hands-on assistance and maintaining knowledge base of customer preferences, proactive project management and achieving KPIs, compliance to process and adhering to budget.
• Strengthened functional expertise in team as mentor for 6 associates and driven excellence through regular engagement with team at work and offering trouble shooting.
• Developed scope of work for various projects by designing specifications for block and schematic diagrams, matching filters for various band frequencies, preparing and executing test cases, drafting and verifying inventory counts remained within tolerance levels and compliance with budget.
• Some projects listed but not limited to are as below:

1. Wide Band Synthesizer
Description:
The Wide Band Synthesizer covers the frequency of 5-20GHz. This consists a FPGA based card used for controlling the synthesizer. Synthesized LO receives input from the DAC and this signal is passed through a Band Pass filter and Multipliers. The DAC provides outputs in the range of 1.2 to 1.8 GHz, and used various interfaces like RS-422, RS-232 are also implemented. This signal is multiplied with the multipliers to get the final output of 5-20GHz with Low Phase Noise and fast switching speed.
Responsibilities:

• Verified and correlated the SI simulated results with the Lab results.
• Administered Schematic Design in accordance with functional team requirements.
• Debugging hardware related issues at electrical bring up platform.
• Testing and integration of the Unit.
• Conducting ATP and ATR.

2. Noise Generation Module
Description:
Noise Generation module generates the Video signal of frequencies 1MHz-10MHz from DAC AD9739. The RF module provides video signals, the processing of these signals is done in Noise Generation unit and gives the final video output. This module consists of Digital and Analog sections. The FPGA is provided with interfaces like LAN, RS232, RS422, JTAG and parallel as per requirement. The clock to DAC and board requirement is provided from a synthesizer generating 1.6GHz.

Responsibilities:

• Administered Schematic Design in accordance with functional team requirements.
• Preparing the PDR, ATP & user manual documents.
• Testing and integration of the Unit.
• Conducting ATP and ATR to the customer.

3. Beam Controller Unit (1025-1095MHz)
Description:
The Beam Controller Unit (BCU) is for beam-forming and scanning. The 4-way unequal power divider is implemented unequal Power coefficient. It comprises of 6-bit digital phase shifter to provide the progressive phase shift to each antenna elements in azimuth plane for electronic scanning. A two-way equal power divider is used at the output of Phase Shifters for connecting respective two elements.
Responsibilities:

• Component selection & preparing the BOM.
• Hardware Designing of Digital PCB & Preparing schematics.
• Testing and integration of the Unit.
• Conducting ATP and ATR to the customer.
• Conducting ESS tests according to standards.

4. Super Heterodyne Receiver.
Description:
Super heterodyne Receiver (0.5-18 GHz) is a frequency conversion module which down-converts frequency range to 160±20MHz and 1±0.25GHz. LO required for the conversion is provided internally. LO receives input from the DAC and this signal is passed through a Band Pass filter and Multipliers. The DAC provides outputs in the range of 1.2 to 1.8 GHz. This signal is multiplied with the multipliers to get the final output of 5-20GHz with Low Phase Noise and fast switching speed.
Responsibilities:

• Verified and correlated the SI simulated results with the Lab results.
• Administered Schematic Design in accordance with functional team requirements.
• Debugging hardware related issues at electrical bring up platform.
• Testing and integration of the Unit.
• Conducting ATP and ATR.

5. FEA-FER (0.5-40GHz)
Description:
FEA-FER is a wide band RF Subsystem for amplifying the received RF signals. It consists of low band amplification and high band down conversion- amplification sections. The subsystem operates over the frequency of 0.5-40GHz in two sub bands viz., Low band: 0.5-18GHz and high band: 18-40GHz. In the subsystem, high band signals are down converted to 0.5-18GHz with the help of in built fixed LO signals and then amplified to the required level whereas received low band signals are straight away amplified to the required level. The FEA-FERs are placed near antenna to have better sensitivity by providing necessary gain and low noise figure. The module also incorporates a CAL source in 0.5-18 GHz band and an External BITE facility in 18-40 GHz for monitoring the health of the system.

6. Dual Front End Amplifier (1-18GHz)
Description:
In the receiver system, Low Noise Amplifiers are used near the antenna to compensate the RF Cable assembly insertion losses and to improve the system sensitivity by providing necessary gain and low noise figure. The DFEA is designed to operate over the frequency range of 1-18GHz with high gain and low noise figure. In DFEA design, broadband CAL/NOISE sources are used to check the health of the system. To protect the receiver system from high power signals, limiters are also used in the antenna paths of the RF channels.

• Supported nearly 6 projects by supporting in design, development, testing and debugging
• Balanced functional responsibility and budget parameters in selection of production materials.
• Interacted with project leaders and stakeholders to define requirements and generate and maintain design development documents.
• Created CAD drawings using AutoCAD to convey R&D and production configurations.

• Conducted research to test and analyze feasibility, design, operation and performance of equipment, components and systems.
• Reviewed and checked technical drawings by architectural technicians, CAD technicians and drafters.
• Oversaw layout, routing and integration of technical and electrical components.
• Developed multiple work plans for various personnel roles, designing to suit required competencies and technical goals of ongoing efforts.
• Drafted and captured technical schematics for use in project planning and execution.

• Prepared technical white papers, proposals and customer presentations, delivering presentations to senior management and customer community to explain technology implementations.
• Conducted research, design and testing of radio frequency hardware, circuit design and sub-system integration for designated products or customer applications.
• Worked with software radar systems and digital and communications systems engineers to collaborate on RF solutions development.
• Assessed problem severity to determine corrective action, recommending resolutions to technical problems through fault isolation techniques.
• Directed design to accomplish cost, size and manufacturability objectives, optimizing overall performance according to priority of functional parameters.