Noise equivalent temperature of Wilkinson coupler having a gain of 1/2L is given as:

Related MCQs

• For a Wilkinson power divider of insertion loss L and the coupler is matched to the external circuitry, and then the gain of the coupler in terms of insertion loss is:
• The equivalent noise temperature of a network given the noise figure of the network or system is:
• Noise equivalent temperature of a 2 stage cascade network is given by:
•                      is defined as the ratio of input signal to noise ratio to the output signal to noise ratio.
• Expression for noise of a two port network considering the noise due to transmission line and other lossy components is:
• The noise temperature of an antenna is given by the expression:
• In conventional amplifiers, a flat gain response is achieved at the cost of reduced gain. But this drawback can be overcome by using:
• 1 MICROWAVE PASSIVE COMPONENTS: DIRECTIONAL COUPLER, POWER DIVIDER, MAGIC TEE ATTENUATOR, RESONATOR
• Bandwidth of balanced amplifier can be an octave or more, but is limited by the bandwidth of the coupler.
• Coupler that is mostly used in balanced amplifiers to achieve the required performance is: