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104 Threads found on Matching Networks
I am doing research on sonar image.where i can get real time sonar image at free of cost What are the new image matching techniques over past techniques
This is well outside my core expertise but I think you may find examples in some of the less classical matching networks like impedance-transforming ones used for Class E PAs and so on in low voltage CMOS; the load is all that matters and the driver port has two states only one of which could be matched at all (the low-Z one). But maybe this is
Hi all, I have designed an amplifier and stabilised the FET unconditionally and checked the K factor across wide band using AWR microwave office and PA was stable across the band. However, when I extracted the EM structures of the matching networks and checked the K factor again, I found out that K factor is below zero at som
I am doing calculations on negative feedback oscillator. Here is some confusing part. If oscillation condition is met either at input or output port, then circuit is oscillating. I understand that. But when i calculate reflection coefficients for both cases, i get different matching networks. I thought that formula of Gout and Gin for both cases w
Hi, How does the S22 of a device impact the figures of merit of the rf power amplifier? I would guess O/P matching networks, but I'd appreciate some details. Additionally, I have a kink in my measured S22, how would it impact the performance of my amplifier? Thanks.
There are numerous plausible explanations for gain compression for a device without matching networks, with the most likely one being that the conduction angle is decreasing. To get optimal performance, expect to do load and source pull simulations, possible with harmonic load pull.
If the circuit of the cascaded RF power amplifier is already done would be hard to interconnect couplers for interstage power measurements. I think the best is to start doing tuning of the matching networks (input, interstage, output), starting from the input to the output. Tune initially stage one and two for maximum PA gain, and at the end, tune
Your S11 is also too bad.. But your circuit has no impedance matching network ? How it will be improved ?? Check the intrinsic input and output impedances of the CasCode only first then apply proper matching networks to match to source and load.
Hello, Did someone experience with simulation of RF PCBs (e.g. GPS). The signal propagation chain looks like this: Antenna GPS --> --> LNA --> SW filter --> GPS module (e.g. from u-blox) All modules in such chain (except matching networks and antenna) have either Spice models either S-parameters. Mat
You need completely different matching networks and different antennas. Probably the best way to do it is to use two CC1120.
I am designing LNA at 2.4GHz using ATF541432a. I have designed matching circuitary on input and output side. Now i am left with Bias Circuit design. How can i calculate values of L(for RF block) and C(to block DC)? And if i do voltage divider circuitary then will it affect noise performance of LNA? ..... Thanks & Regards
Friends, I am working on matching networks for a power amplifier. In ADS using LSSP and optimization of the matching network help to match at a single frequency, but I want to match over a frequency band. Consider S-Parameters in small signal, it can match input and output matching network over a frequency band, but LSSP (...)
Dear all. Recently I have started designing a radio frequency amplifier based on dual-gate MOSFET BF998. I have simulated it in HSPICE simulation software, designed input and output matching networks. Unfortunately, This is a four-parameter problem which is suitable to be solved by optimization technique. I need to optimize three inductors and one
matching networks use generally low voltage, tight tolerance C0G type temperature compansated type capacitors. For inductors, tight tolerance is preferred. But we don't know your componenets' values and operating voltages,currents etc. Therefore I speak in general. There might be some special applications such as high voltage,high current, etc.
Hi Friends, Can anybody send me the code for TRL Deembedding in MATLAB because i developed matching networks in ADS so i need to deembed that i have all s parameter files i will be very greatfull if anybody send the code
Input and output matching networks plays important role for the stability of the amplifier. Using high-pass topology for the input network, and low-pass for the output network helps to avoid low frequency (or very high frequency) instabilities.
Hi. I am wondering about coupling capacitor value. What are criteria in choosing input/output coupling capacitors for LNA at 1.5GHz? They are parts of input and output matching networks. However, I think to design the input/output matching network we need to determine the values of these capacitors first.
I'm really interested in RF harvesting and I would like to ask the edaboard members if they can suggest some good BOOKS and reference papers that give detailed information on "Rectennas", its matching networks and its mathematical formulas to calculate the output voltage and conversion efficiency. Awaiting positive reply, Regards
The datashseet shows suggested matching networks for different frequency bands together with s-parameter magnitudes, which can be read as an implicite impedance specification. It should be also considered that s-parameter specifications of power amplifiers are of limited worth because the impedances are actually level dependant. As in any real R
In addition to reidintransit's reply, CPW facilitates the integration of lump-element matching networks.