Weaver Receiver Architecture In this blog, we will discuss about Weaver Architecture. This structure is used for image rejection. Previously we discussed about Image rejection using Hartley Architecture. Weaver architecture is similar to Hartley Receiver, this structure uses quadrature down …
Quadrature Down Conversion – High Injection Previously we discussed about methods for implementing a 90˚ phase shift. Read about the methods to implement a 90-degree phase shift in a receiver. The first method is the RC-CR network, and the second …
How is the 90˚ phase shift implemented? There are two methods that we will discuss here to implement a 90-degree phase shift inside a receiver. The first method is the RC-CR network and the second method is Quadrature downconversion. In …
90 degree Phase Shift – Quadrature Down Conversion When a signal becomes its own image it corrupts the desired channel and the solution to this problem is Quadrature Down Conversion. Read more about the Image problem. The below plot shows …
What is the drawback of quadrature down conversion? In this blog, we will be looking into the IQ mismatch and how it affects our signal. Refreshing the memory from a previous blog on Quadrature down conversion. Looking at the below …
Quadrature down conversion The quadrature signals are used in order to solve the image problem that we faced in the zero-IF receiver. In quarter down conversion, we create two versions of the down converter signal with a phase difference of …
If we have FM modulation, the channel is not symmetric around the center frequency. The signal is asymmetric and carries different information on both sides. Our signal shape will totally change after down-conversion, and the data will be corrupted, which …