Precision Engineered Microwave

Model SX-14000 Experiments

Study of reflex Klystron tube

Frequency and guide wavelength Measurement

VSWR Measurement

Impedance Measurement

Model SX-14001 Experiments

Study of Gunn oscillator

Frequency and guide wavelength Measurement

VSWR Measurement

Impedance Measurement Model SX-14002 (Waveguide Antenna Trainer Kit) Experiments

• Measurement of gain and radiation pattern of E -sectorial Horn
• Measurement of gain and radiation pattern of H -sectorial Horn
• Measurement of gain and radiation pattern of Pyramidal Horn
• Measurement of gain and radiation pattern of Parabolic Disc Horn
• Measurement of gain and radiation pattern of Dielectric Antenna
• Measurement of gain and radiation pattern of Slotted antenna broad wall
• Measurement of gain and radiation pattern of Slotted antenna narrow wall
• Measurement of gain and radiation pattern of Pick up Horn

Model SX-14003 Experiments

Dielectric constant measurement of solid dielectric material

Dielectric measurement of liquid dielectric material

Measurement of Phases Shift

Measurement of 'Q' of cavity Model SX-14004 Experiments

To study magic tee, directional coupler, isolators & circulators

To measure characteristic of detector diode

To study attenuation measurements

To study the return loss measurements

For perfect matching sometimes it is required that the microwave power in a waveguide be absorbed completely without any reflection and also insensitive to frequency. For this attenuators are used. Attenuators are commonly used for measuring power gain or loss in dBs for providing isolation between instruments, for reducing the power input to a particular stage to prevent overloading. Scientific Microwave offers fixed and variable attenuator-s to its customers. Variable Attenuators These attenuators provide continuous attenuation of power upto 20 dB.

Model	Band	Freq. Range (GHz)	Waveguide	Attenuation (dB)	VSWR	Accuracy
SA-101	S	2.60-3.95	WR-284	0-20	1.1	+/-0.5dB
CA-101	C	3.95-5.85	WR-229	0-20	1.1	+/-0.5dB
JA-101	J	5.85-8.20	WR-137	0-20	1.1	+/-0.5dB
XA-101	X	8.20-12.40	WR-90	0-20	1.1	+/-0.5dB
KuA-101	Ku	12.40-18.00	WR-62	0-20	1.1	+/-0.5dB
KA-101	K	18.00-26.50	WR-42	0-20	1.1	+/-0.5dB

This is an economical source of microwave power in which Gunn diode is used which work on negative resistance produced by application of DC bias. Precision micrometer fitted with the plungers is used to change the frequency of the oscillations.

Model	Bias voltage (Max)	Output Connector	Waveguide
XG-130	10 volts	BNC (F)	WR-90

This system consists of a transmission line (waveguide), a traveling probe carriage and facility for attaching/detecting instruments. The slot made in the center of the broad face do not radiate for any power of dominant mode. Slotted section is basically used to measure standing wave ratio (VSWR). The precision built probe carriage having centimeters scale with a vernier reading of 0.1 mm least count is used to note the position of the probe. Additionally slotted section can be used to measure impedance, reflection coefficient and the return loss.

Model	Band	Freq. Range (GHz)	Waveguide	VSWR	Slope (dB)
SSS-148	S	2.60-3.95	WR-284	1.02	+/-0.2
CSS-148	C	3.95-5.85	WR-229	1.02	+/-0.2
JSS-148	J	5.85-8.20	WR-137	WR-137	+/-0.2
XSS-148	X	8.20-12.40	WR-90	1.02	+/-0.2
KuSS-148	Ku	12.40-18.00	WR-62	1.02	+/-0.2
KSS-148	K	18.00-26.50	WR-42	1.02	+/-0.2

A tunable probe helps in detecting the low frequency square wave modulated microwave signal. It is made by the use of crystal diode mounted in the transmission line. The probe is connected to the crystal detector so that the output from the detector is proportional to the square of the input voltage at the position of the probe. As the position of the probe is moved along the waveguide slot it gives output proportional to the standing wave pattern inside the waveguide.

Waveguide	Band	Freq. Range (GHz)	Waveguide	Crystal detector	Output Connectors
STP-153	S	2.60-3.95	WR-284	IN-21	BNC (F)
CTP-153	C	3.95-5.85	WR-229	IN-21	BNC (F)
JTP-153	J	5.85-8.20	WR-137	IN-23	BNC (F)
XTP-153	X	8.20-12.40	WR-90	IN-23	BNC (F)
KuTP-153	Ku	12.40-18.00	WR-62	IN-23	BNC (F)
KTP-153	K	18.00-26.50	WR-42	IN-23	BNC (F)

through wide range of frequencies. These modulators utilize PIN diode which are mounted across the waveguide line with a R.F. isolated DC bias lead passing to an external TNC (F) connectors.

Model	Bias voltage (Max)	Output Connector	Waveguide
XPM-141	10 volts	TNC (F)	WR-90