Advanced Microwave Laboratory is a research lab mainly for MTech and PhD students in a wide area of reconfigurable & multifunctional antennas, satellite/ground station antennas, metamaterial/ metasurface-inspired antennas, antennas for smart phone/cellular communications, radar antennas, wireless power transfer, and energy harvesting, etc. The lab provides testing facilities for the fabricated antennas using Vector Network Analyzer (VNA), Spectrum analyzers, as well as an anechoic chamber for measurement purposes.

Advanced Microwave Lab provides facilities such as:

• Vector Network Analyzer
  • Specifications: Agilent Technologies PNA Network Analyzer (N5224A)
  • Frequency: 10 MHz-43.5 GHz
• Spectrum Analyzer
  • Specifications: Agilent Technologies EXA Signal Analyzer (N9010A)
  • Frequency: 10 Hz-44 GHz
• Signal Generator
  • Specifications: Agilent Technologies PSG Analog Signal Generator (E8257D)
  • Frequency: 250 KHz-40 GHz
• Anechoic Chamber
  • Technical Specification: Pyramid absorbers - Polyurethane foam-based (foam density: 23 to 26 per cubic meter)
  • Frequency of operation: 0.8 to 40 GHz

Measurement Setup:

• RF Anechoic Chamber
• VNA Instrument
• Testing Cables
• Rotatory 1 Axis Transmitter Positioner System
• 3 Axis Receiver Positioner System
• Measurement Software - LabView-based
• Reference Broadband Horn Antenna
• Antenna under Test
• PC for Interfacing

An anechoic chamber is a shielded space designed and constructed to resist electromagnetic waves and suppress the emission of electromagnetic waves to the outside world. An anechoic chamber is shielded entirely with metal and has radio wave absorbers covering the surrounding walls, ceiling, and floor. The size of the anechoic chamber and type of radio wave absorber to be used are determined by the size and purpose of the electronic equipment, wireless devices, or communication system being evaluated. RF and Microwave Pyramidal Foam absorbers are made of carbon-impregnated low-density polyurethane foam and come in various sizes and colors. The tapered structure of the pyramids transitions the radio waves from the air to the lossy carbon employed in the pyramids with minimal wave reflection.

The following measurements can be made with the setup:

• 3D Pattern Measurement
• 2D Pattern Measurement
• Gain Measurement
• S-Parameter Measurement
• Axial Ratio Measurement