TDD Merits Transmitters are turned off during reception, so the two paths don’t interfere. TDD allows direct peer-to-peer communication between two transceivers hence no need for the system between them. Only one band is allocated so we don’t need to …
Frequency Division Duplexing In Frequency Division Duplexing is a full-duplex model of transceiver where different bands of frequencies are utilized for Tx and Rx and the data is transmitted and received at the same time. Bandpass filters are used to …
Time Division Duplexing (TDD) In the previous blog, we discussed about the basic structure of the transceiver and the duplexer block. Duplexer acts as a decision block like a switch between the transmitter and receiver part. There are different types …
What is a Transceiver? A transceiver is a combination of transmitter and receiver, hence the name transceiver. The transmitter and receiver share the circuitry. It can both transmit and receive radio waves to communicate with another device. Transceivers are widely …
In the previous blog, we discussed about the first drawback of the Heterodyne transmitter which is DC offset. The second drawback is Mixing Spurs, which will be discussed in this blog. What is Mixing Spurs? In simple language, if there …
Heterodyne Transmitter Heterodyne Transmitter is a two-step upconversion, just like heterodyne receiver which is a two-step downconversion. Read about the heterodyne receiver. This structure involves two steps of mixing and there is no oscillator pulling problem, however, just like other …
In the previous blog, we discussed about what is Oscillator Pulling. Oscillator Pulling can be explained from another point of view. If a sinusoid at the frequency of w1=wLO+∆w is injected into the oscillator operating at the frequency of wLO …
What is oscillator pulling and how is it generated? One of the problems faced while designing a transmitter is Oscillator Pulling or sometimes called Injection Pulling. The output power of a power amplifier is very high which we already know, …
What is linearity? Linearity is the property of a mathematical relationship or function, which can be graphically represented as a straight line. Linearity can be graphically represented as a straight line. We always expect to have this kind of outputs …
This blog talks about the carrier leakage within the transmitter. The analog base circuitry producing the quadrature signals in a transmitter exhibits DC offset. What is DC offset? DC offset is coming from local oscillator leakage. The local oscillator leakage …