In what radio stage is the image frequency...

Question 1 / 27070CLpAzjnN3UUkjGzbJpZh

Question 1 of 27070CLpAzjnN3UUkjGzbJpZh

In what radio stage is the image frequency normally rejected?

Back

Question 1 of 27070

Q

In what radio stage is the image frequency normally rejected?

🔍 Key Concepts

• Superheterodyne receivers and how they convert RF (radio frequency) signals to an IF (intermediate frequency) • What an image frequency is and how it relates to the local oscillator (LO) frequency • Where selectivity and filtering are mainly handled in a receiver chain

💭 Think About

• Think about which stage in a superheterodyne receiver provides most of the selectivity using fixed, narrow-band filters • Ask yourself: at what point (RF, IF, LO, or detector) can we practically build sharp filters that distinguish between the desired frequency and its image? • Consider how the local oscillator mixing process creates both the desired IF and an image IF — which stage actually removes the unwanted one?

✅ Before You Answer

• Verify where fixed-tuned filters with high selectivity are usually placed in a superheterodyne design • Confirm which stage (RF, IF, LO, detector) is best suited for narrow-band, high-Q filters to reject nearby unwanted signals like the image frequency • Make sure you understand that the LO creates both desired and image products, but another stage is responsible for rejecting the image

Question 1 of 27070

Q

In what radio stage is the image frequency normally rejected?

A

RF.

B

IF.

C

LO.

D

Detector.

Question 1 / 27070CLpAzjnN3UUkjGzbJpZh

Question 1 of 27070CLpAzjnN3UUkjGzbJpZh

In what radio stage is the image frequency normally rejected?

Back

Question 1 of 27070

Q

In what radio stage is the image frequency normally rejected?

🔍 Key Concepts

• Superheterodyne receivers and how they convert RF (radio frequency) signals to an IF (intermediate frequency) • What an image frequency is and how it relates to the local oscillator (LO) frequency • Where selectivity and filtering are mainly handled in a receiver chain

💭 Think About

• Think about which stage in a superheterodyne receiver provides most of the selectivity using fixed, narrow-band filters • Ask yourself: at what point (RF, IF, LO, or detector) can we practically build sharp filters that distinguish between the desired frequency and its image? • Consider how the local oscillator mixing process creates both the desired IF and an image IF — which stage actually removes the unwanted one?

✅ Before You Answer

• Verify where fixed-tuned filters with high selectivity are usually placed in a superheterodyne design • Confirm which stage (RF, IF, LO, detector) is best suited for narrow-band, high-Q filters to reject nearby unwanted signals like the image frequency • Make sure you understand that the LO creates both desired and image products, but another stage is responsible for rejecting the image