Question:
Which of the following is not correct if the intermediate frequency is too high?
Which of the following is not correct if the intermediate frequency is too high?
Show Hint
High IF improves image rejection but worsens selectivity and tracking.
Updated On: Jun 25, 2026
- Poor selectivity
- Poor adjacent channel rejection
- Increase tracking difficulties
- Poor image frequency rejection
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Concept:
In a superheterodyne receiver, increasing IF has both advantages and disadvantages.
Step 1: Recall the effect of high IF.
A higher IF increases image frequency separation. Hence image rejection improves.
Step 2: Examine the options.
High IF generally causes:
• Poor selectivity
• Poor adjacent channel rejection
• Tracking difficulties However, \[ \text{Image frequency rejection improves} \] and does not become poor.
Step 3: Final Answer.
Thus the incorrect statement is \[ \boxed{\text{Poor image frequency rejection}} \] Hence, \[ \boxed{\text{Correct Option (D)}} \]
Step 1: Recall the effect of high IF.
A higher IF increases image frequency separation. Hence image rejection improves.
Step 2: Examine the options.
High IF generally causes:
• Poor selectivity
• Poor adjacent channel rejection
• Tracking difficulties However, \[ \text{Image frequency rejection improves} \] and does not become poor.
Step 3: Final Answer.
Thus the incorrect statement is \[ \boxed{\text{Poor image frequency rejection}} \] Hence, \[ \boxed{\text{Correct Option (D)}} \]
Was this answer helpful?
0
0
Top TS PGECET Electronics and Communication Engineering Questions
- Which of the following system is non-causal sytem? (Typo: "sytem" should be "system")
- The exponential Fourier series coefficient \( C_{-n} \) in terms of trigonometric Fourier coefficients is
- The amplitude and phase spectrum of exponential Fourier Series about vertical axis respectively, is
- Which of the following statement is not correct?
- The Fourier transform of the following signal is \[ x(t) = \begin{cases} 1+\cos \pi t & |t|<1 \\ 0 & |t|>1 \end{cases} \]
View More Questions
Top TS PGECET communication systems Questions
- Thermal noise is independent of
- The positive RF peaks of an AM voltage rise to maximum value of 12V and drop to a minimum value of 4V. Assuming single tone modulation, the modulation index is
- The plot of modulation index versus carrier amplitude yields a
- A DSB-SC signal can be demodulated using
- The image channel rejection in superheterodyne receiver comes from
View More Questions
Top TS PGECET Questions
- If \( P = \begin{pmatrix} 1 & 1 & 1 \\ 0 & 1 & 2 \\ 0 & 0 & 1 \end{pmatrix} \) is the modal matrix of \( A = \begin{pmatrix} 1 & 1 & 0 \\ 0 & 2 & 2 \\ 0 & 0 & 3 \end{pmatrix} \) then the sum of all the elements of \( P^{-1}AP \) is
- If the system of equations \( kx + y + z = k - 1 \), \( x + ky + z = k - 1 \), and \( x + y + kz = k - 1 \) has infinite solutions, then \( k \) is
- The value of the integral \( \int_C (2xy - x^2) \, dx + (x^2 + y^2) \, dy \) where \( C \) is the boundary of the region enclosed by \( y = x^2 \) and \( y^2 = x \), described in the positive sense, is
- Let \( f(x) = \log x \). The number \( C \) strictly between \( e^2 \) and \( e^3 \) such that its reciprocal is equal to \( \frac{f(e^3) - f(e^2)}{e^3 - e^2} \) is
- The solution of the differential equation \( (D^2 + 2)y = x^2 \) is
View More Questions