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Questions tagged [resonator]

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Transmision and coupling coefficient in waveguide and ring resonator

A simple ring resonator with a bus waveguide is described by: \begin{equation} \begin{pmatrix} B \\ C \end{pmatrix} = \begin{pmatrix} t & \kappa \\ -\kappa^* & t^* \end{pmatrix} \begin{pmatrix}...
Sajadi's user avatar
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1 answer
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Making disconnectable quartz resonator on STM32: disconnect one or both wires?

I am making STM32 development board and I want to make disconnectable quartz resonator on OSC32 pins that can be used for other purposes, for example, as GPIO pins. I am connecting resonator using ...
t1m013y's user avatar
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1 answer
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I'm trying to connect an AS3933 chip to a CAS143-47

So basically AS3933 has 3 pins (LF1P, LF2P, LF3P) which need to be connected to pins of 3d antenna (CAS143-47 in this case) and to common ground LFN. My CAS143-47 antenna has 8 pins with 3 pairs of ...
Angela 's user avatar
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3 answers
171 views

What happens to output of a crystal oscillator if the input it's given is an AC waveform instead of stable DC?

Some things I've read say the crystal acts as a filter and you still get its resonant frequency as the output and something else I read says feeding the crystal oscillator with a sine wave of the ...
Deoxal's user avatar
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How to capture a damped sine wave with an oscilloscope?

Basically what I'm doing is feeding a resonator with a sine wave at roughly 1 MHz coming from a signal generator for a certain time T. After that, I'm switching off the signal generator and what I ...
Adrian's user avatar
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1 answer
100 views

MEMS Oscillator Simulation in LTSPICE

The MEMS oscillator topology i simulate is below fig1: Oscillator schematic Source: A Tunable-Gain Transimpedance Amplifier for CMOS-MEMS Resonators Characterization Below is mine, the resonator i am ...
Jack Huang's user avatar
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1 answer
70 views

Resonance frequency of microstrip resonator

An open circuit microstrip resonator was simulated as shown below. As we can see from the smith chart, the resonator we get the input impedance purely resonant at f0 = 4.33GHz. The length of the ...
lub2354's user avatar
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1 answer
51 views

Mode responsible for phenomena in disk resonator

As you can see below there is resonance because the transmission line is the circumference of the ring. in the solution they set the phase such that it has integer number of wavelength which is the ...
lub2354's user avatar
  • 373
0 votes
1 answer
36 views

Visualizing three index cylindrical modes logic

From rectangular waveguide I know that nml means we have half wave behavior in each direction. How do I imagine the shape of a nml mode in cylindrical resonator by its indexes? Are there any visual ...
lub2354's user avatar
  • 373
5 votes
2 answers
793 views

Why is only the minimum value given for crystal drive level?

In this device, I'm using this 26MHz crystal. The datasheet only specifies the minimum crystal drive level as 500 μW. The above shown crystal has a maximum drive level of 300 μW. I understand that ...
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3 votes
1 answer
195 views

Crystal resonator characterization in frequency and time domain

I want to measure a 32.768 kHz crystal resonator (not oscillator) in the frequency and the time domain using a ZURICH HF2LI instrument, which is a network analyzer and oscilloscope in one unit. The ...
Jack Huang's user avatar
1 vote
1 answer
128 views

Purpose of diode D1 in this circuit

These MOSFETs drive an LC resonator circuit. I'm wondering what the purpose of the diode D1 is.
Vernon's user avatar
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Calculating the current through a time-varying RLC series resonant circuit

As shown in the circuit below, an admittance \$Y\$ consists of a series resonant circuit \$Y_m\$ and an additional capacitance \$C_0\$ in parallel. \$Y\$ is given by \$Y = j \omega C_0 + Y_m = j \...
Charly's user avatar
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3 answers
1k views

Can I get a clock signal from a 4-pin crystal oscillator circuit by applying 5V to the input pin?

I have a 4-pin crystal oscillator/resonator - pins 2 & 4 are ground - do I simply apply 5V at pin 1 in order to generate a square 16MHz wave at the output pin (4)? I have searched and searched the ...
Hektor's user avatar
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-5 votes
1 answer
783 views

What is the role of L1 and L2 in the following ASK transmitter circuit?

I know almost nothing about how oscillators work. Please explain about the operation of the circuit below (ASK transmitter module), especially the inductors. Is it possible to replace these two ...
Mahdi Masoodi's user avatar
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1 answer
79 views

Using resonators to phase-in a PWM

I'd like to have a constant PWM signals, much like this: Wherein the blue trace have centered it's hi at the 0 of the fully rectified AC & the red have centered ...
Tempus Nomen's user avatar
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2 answers
142 views

How to find an equivalent LC circuit from a combination LC circuit [closed]

I have a circuit containing a number of L and C, both in parallel and series. How can I find the equivalent LC circuit (with a single L and C) for such a circuit? Kirchhoff or Thevenin can give me the ...
Achintya Paradkar's user avatar
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0 answers
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How to do a comparative analysis of electrical characteristics of two 134kHz RFID circuits?

In the figure below there are two antenna circuits, both are circuits used in RFID at 134kHz, which are external to the TMS3705 IC. Circuit number 1 is an old circuit, circuit number 2 is the circuit ...
Daniel's user avatar
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1 answer
298 views

Switching crystals circuit

This is for NES clock circuit. I need to find a way to switch the crystal between PAL and NTSC. I have used a normal switch to switch those with no problem. Same goes obviously with a relay, but I'm ...
Quezacotl's user avatar
1 vote
1 answer
1k views

How to identify this SMD crystal oscillator or resonator?

I need your help to identify this SMD crystal to fix a car ECU. It is marked AR and has 3 pins on the bottom. How can I find the frequency or specifications to order a new one or test this?
PIX ELS's user avatar
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1 vote
0 answers
161 views

1-port VNA quality factor measurement

I am using an Anritsu VNA (MS2034B) to obtain the LINEAR MAGNITUDE and PHASE of S11 via a calibrated 1-port measurement. The DUT is an inductively coupled RLC resonator (schematic below). However, I ...
D. Zambrano's user avatar
1 vote
1 answer
528 views

How to make an oscillator using 3 legged ceramic resonator and transistor?

I need an oscillator which can provide 4 MHz (which does not need to be very precise) so I have bought a 3 legged 4 MHz ceramic resonator which looks like this. I tried wiring up this ceramic like ...
Subha Jeet Sikdar's user avatar
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0 answers
197 views

How to design a complementary split ring resonator (CSRR)?

I've been looking for references that could help me to design a CSRR with no success. Basically, given a desired resonance frenquency, I want do design/calculate a CSRR that meet the needs ...
Gabriel Godoi's user avatar
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1 answer
233 views

Using PLL as resonance tracker

Edit: Re-re-formulated :) I'm developing a resonant circuit with its resonant frequency around 3 GHz. I am constantly tuning this resonance frequency by an unknown amount. How can I read out the ...
Radiofreak1041's user avatar
1 vote
0 answers
82 views

What is the difference between a cavity resonator and a faraday cage?

In my internet research, I found that several people believed microwave ovens act as faraday cages and some said they act as cavity resonators.  I know that Faraday cages block incoming electric ...
Prerna 's user avatar
0 votes
1 answer
866 views

SAW resonator oscillator operating principle

I can't for the life of me figure out how the following SAW oscillator works. I can't see how the oscillation would be maintained since it doesn't use a feedback mechanism I'm familiar with. This post ...
s3c's user avatar
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1 vote
0 answers
17 views

Split loop cavity or Loop gap cavity

I want to make a code for the power vs wavelength for the split loop cavity resonator. Can someone help me with the python code for the same?
Abhinna Sundar's user avatar
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0 answers
54 views

How to provide gap between two separate structure or microstrip lines in ADS(Advanced design systems)?

I want to provide gap between two resonators. Here is an image. How do I provide those gap M12 and M23.
sajib sn's user avatar
3 votes
1 answer
233 views

Ceramic resonator instead of LC tank in a quadrature demodulator

I'm new to analog circuits. I have a simple question. Can I use a 455khz ceramic/crystal resonator instead of LC tank on a quadrature demodulator input of MC3357? Thanks.
Flávio N. Lima's user avatar
0 votes
1 answer
2k views

16MHz ceramic resonator 3pin vs 2 pin

i want to make this project: https://www.instructables.com/DIY-Bare-Minimum-Arduino-Mega-2560/ but i found one of the parts is 16MHz ceramic resonator with 3pin. i want to know : 1- what is the ...
yeganehhp's user avatar
  • 377
3 votes
1 answer
253 views

Incorrect resonator/crystal PCB layout?

Hobbyist developing first PCB. Only caught this on my PCB/Schematic design after I had received them, was too focused on functionality of other components. Resonator designed like crystal, resonator ...
Luke Buono's user avatar
1 vote
2 answers
492 views

transient analysis not matching ac analysis for RLC circuit

I am modeling a simple impedance-matched RLC series resonator. I get a nice resonance at around ~48.5MHz when I do an ac analysis. However, when I try to do the corresponding transient analysis at the ...
D. Zambrano's user avatar
0 votes
1 answer
623 views

Can I use ceramic resonator for ATmega328p?

https://lcsc.com/product-detail/Ceramic-Resonators_ABRACON_AWSCR-16-00CV-T_16MHz-0-5-22pF_C179647.html I have been developing a project that includes ATmega328p-AU, So I have studied many circuits ...
Ravikiran's user avatar
  • 225
1 vote
2 answers
312 views

DIY Pierce Oscillator not working

I'm building a simple pierce oscillator for fun and trying to read the frequency using an arduino uno and the freqcount.h library (I don't have an oscilloscope). However, I'm consistently getting a ...
omzrs's user avatar
  • 113
1 vote
1 answer
88 views

What's the usage of a "Cavity resonator" in a power supply circuit of a CD player?

To diagnose a CD player I'm currently learning its schematics, yet I don't understand this part. In the schematic, what could be the usage of PS401? Thank you!
Nevaeh's user avatar
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0 answers
53 views

Compensation for dielectric losses in a coil?

Recently I built a helical resonator. It took me a good while to adjust it since I had to trim my coils much shorter than calculated. The calculation said 7.2 turns but it ended up being more like 6.5 ...
hjf's user avatar
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