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Results tagged with rf
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user 208400
Short for Radio Frequency, i.e. frequencies at which radiation (intentional or not) plays a role. Typically associated with wireless communications, but also relevant for high-speed PCB design.
3
votes
Accepted
Usage of non-linear phase filters in RF receivers
All analog filters used in RF receiver frontends are in the class of Analog Infinite Impulse Response filters and, therefore, they can’t have stability and linear-phase properties at the same time. …
- 1,101
1
vote
Accepted
How would I use a Smith Chart and L-network to set input admittance of a circuit network?
Your initial effort in calculating \$ Z_c \$ is correct. Next, you must recognize that parallel stubs contribute to the imaginary part of the admittance or impedance, through:
$$
Z_{stub} = Z_0 \frac{ …
- 1,101
8
votes
Why take the antenna output from the inductor tap in this simple FM transmitter circuit?
This is a common-base Colpitts oscillator modulated from the base of TR1. If connected directly to the collector node, the (typically 50 or 75 Ohm) antenna would de-Q the circuit and hinder its self-o …
- 1,101