ECE LAB - VII (Microwave Laboratory)

lab

Objective of the Laboratory

  • To understand the basic concepts of microwave and wireless communication
  • To demonstrate the electromagnetic propagation using microwave sources and antennas at S and X bands frequencies.
  • To provide the state-of-art softwares for the design and development of various microwave circuits and antennas.

 

Major Equipments

Sr. No. Name of Equipment Equipment Description

1

Attenuator variable S Band

Variable Attenuator is used for adjusting the microwave power level.

2

Slotted line section with probe

Is designed for measurement of VSWR & impedance of unknown load.

3

Wave guide shorts S Band

Used for providing almost unified reflation co-efficient with adjustable phase.

4

Antenna Tunable with Base

 

5

Wave guide Matched Termination S Band

Matched Terminations are useful for VSWR measurement of various waveguide components.

6

S Band Wave guide stand B.T.S

Used to sport microwave banches.

7

S Band Tunable probe for S Band

These are meant for exploring the energy of the EF in a suitably fabricated section of wave guide.

8

X Bond Horn 10dB Gain

Wave guide horns are used as feed horns as radiators for reflectors and lenses and as a pickup antenna for receiving microwave power.

9

Gunn power supply

Gunn Power supply comprises of an regulated DC power supply and a square wave generator, designed to operate Gun-Oscillator.

10

Chok flanges X band

They are used with x-band wave guide.

11

Rectangular Wave guide 3”

Wave guides are manufactured to the highest mechanical and electrical standards and mechanical tolerances.

12

Circulator (X band)

Circulators are matched three port devices and these are meant for allowing Microwave energy to flow in clockwise direction with negligible loss but almost no transmission in the anti-clockwise direction.

13

Gunn oscillator with pin modulator

Gunn Oscillators are solid state microwave energy generators. These consists of waveguide cavity flanged on one end and micrometer driven plunger fitted on the other end. Pin modulator consists of a pin diode mounted inside a section of Wave guide flanged on it’s both end.

14

Klystron cooling fan

Used for cooling of klystron tube.

15

Klystron and klystron mount

Klystron mounts are meant for mounting corresponding Klystrons such as 2K25, 723A/B, 726A or RK-5976 etc.

16

Tunable detector mount wave guide

Tunable Detector Mount is simple and easy to use instrument for detecting microwave power thro’s suitable detector.

17

Pin modulator

Pin modulator consists of a pin diode mounted inside a section of Wave guide flanged on it’s both end.

18

Ampere meter 0-50 Amp

To measure current flowing through any circuit

19

ASWR meter

The SWR meter or VSWR (voltage standing wave ratio) meter measures the standing wave ratio in a transmission line.

20

Gunn Oscillator

Gunn Oscillators are solid state microwave energy generators.

21

Japan CRO

The cathode-ray oscilloscope (CRO) is a common laboratory instrument that provided accurate time and aplitude measurements of voltage signals over a wide range of frequencies.

22

20MHZ digital CRO

The cathode-ray oscilloscope (CRO) is a common laboratory instrument that provides accurate time and aplitude measurements of voltage signals over a wide range of frequencies.

23

X-Y potter interface

X-Y plotter can draw for you. This simple two axis device can accurately moves a pen to draw out anything.

24

X band klystron with PS and fan

It produces Microwaves

25

S band klystron with mount

Klystron mounts are meant for mounting corresponding Klystrons such as 2K25, 723A/B, 726A or RK-5976 etc.

26

S band detector mount

Tunable Detector Mount is simple and easy to use instrument for detecting microwave power thor’s suitable detector.

27

Pin diode for X band

Pin modulators are designed to modulate the cw output of Gunn Oscillators. It is operated by the square pulses derived from the UHF(F) connector of the Gunn power supply. These consists of a pin diode mounted inside a section of Wave guide flanged on it’s both end.

28

Pin diode for S band

Pin modulators are designed to modulate the cw output of Gunn Oscillators. It is operated by the square pulses derived from the UHF(F) connector of the Gunn power supply. These consists of a pin diode mounted inside a section of Wave guide flanged on it’s both end.

29

Cross directional coupler

It consists of two rectangular waveguides (called main waveguide and branch waveguide) crossing at a certain angle and sharing a common broad wall.

30

Band pass filter band 1

A band-pass filter is a device that passes frequencies within a certain range and rejects attenuates frequencies outside that range.

31

Band pass filter band 11

A band-pass filter is a device that passes frequencies within a certain range and rejects attenuates frequencies outside that range.

32

Frequency meter X band, Direct reading

It measures frequencies over the X band range with good sensitivity.

33

Frequency meter S band, (micrometer)

It measures frequencies over the X band range with good sensitivity.

34

X band slotted section with probe

It is the basic microwave equipment for study of VSWR Attenuation, Phase, Impedance, etc. It consists of a waveguide section in which a small longitudinal cut has been made and a carriage is affixed, which can be moved along the cut by a vernier arrangement. When a tunable detector probe is affixed on the carriage, its tip projects into the waveguide and picks up energy from the guide.

35

X band tunable probe for slotted line

It is the basic microwave equipment for study of VSWR Attenuation, Phase, Impedance, etc. It consists of a waveguide section in which a small longitudinal cut has been made and a carriage is affixed, which can be moved along the cut by a vernier arrangement. When a tunable detector probe is affixed on the carriage, its tip projects into the waveguide and picks up energy from the guide.

36

S band tunable probe

Tunable probe is designed for use with slotted sections. These are meant for exploring the energy of the EF in a suitably fabricated section of wave guide.

37

T Type circulator X band

Circulators are matched three port devices and these are meant for allowing Microwave energy to flow in clockwise direction with negligible loss but almost no transmission in the anti-clockwise direction.

38

T Type circulator S band

Circulators are matched three port devices and these are meant for allowing Microwave energy to flow in clockwise direction with negligible loss but almost no transmission in the anti-clockwise direction.

39

Gunn Oscillator with pin modulator

Tunable probe is designed for use with model slotted sections. These are meant for exploring the energy of the EF in a suitably fabricated section of waveguide.

40

Silvaco TCAD

Software for design of diodes, transistors, terahertz detectors, photo detectors, solar cells, memory devices, nano electronic devices etc.

41

Hyperlynx 3DEM

For the design of microstrip antennas, MMIC circuits, Microwave Filters, etc.

42

Workstations with Xeon processors

For computer simulations of microwave diodes, transistors, terahertz detectors, antennas, MMIC circuits etc. using Silvaco TCAD and Hyperlynx 3DEM, respectively.

43

Source Measure Unit (SMU)

For the measurement of IV characteristics of microwave devices including diodes and transistors.

44

Digital Storage Oscilloscope (DSO)

For the characterization of microwave devices including diodes and transistors.

45

Bench Top (6.5 digit) digital Multi-meter

For the characterization of microwave devices including diodes and transistors.

 

Name of Officials handling the Laboratory

  • Dr. Arun Kumar Singh (O/I)
  • Mrs. Amita Chawla (Sr. Technician)