Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Non-ohmic Devices00:51

Non-ohmic Devices

1.1K
In most substances, the current flow is proportional to the voltage applied to it. A simple relationship between the values of current, voltage, and resistance is known as Ohm's law. Nonohmic devices do not exhibit a linear relationship between voltage and current. One such device is the semiconducting circuit element known as a diode. A diode is a circuit device that allows current flow in only one direction.
Consider a simple circuit consisting of a battery, a diode, and a resistor. A...
1.1K
Impedance Combination01:21

Impedance Combination

459
Consider a string of christmas lights, each bulb symbolizing an impedance element. In this series configuration, the flow of electric current remains uniform across every component. This behavior aligns with Kirchhoff's Voltage Law (KVL), which asserts that the total impedance in such a setup equals the sum of individual impedances—akin to resistors in series. It follows that the voltage from the power source is distributed proportionally among these components, adhering to the...
459
Line Protection with Impedance Relays01:27

Line Protection with Impedance Relays

105
Coordinating time-delay overcurrent relays in complex radial systems and directional overcurrent relays in multi-source transmission loops can be challenging. Impedance relays address these issues by responding to the voltage-to-current ratio, specifically measuring the apparent impedance of a line. These relays become more sensitive during faults as current increases and voltage decreases, thereby reducing the apparent impedance.
Under normal conditions, low load currents keep the measured...
105
Energy Stored In A Coaxial Cable01:31

Energy Stored In A Coaxial Cable

1.6K
A coaxial cable consists of a central copper conductor used for transmitting signals, followed by an insulator shield, a metallic braided mesh that prevents signal interference, and a plastic layer that encases the entire assembly.
In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic...
1.6K
MOSFET Amplifiers01:17

MOSFET Amplifiers

186
The MOSFET, when operating in its active region, functions as a voltage-controlled current source. In this region, the gate-to-source voltage controls the drain current. This principle underlies the operation of the transconductance MOSFET amplifier. The output current is directed through a load resistor to convert this amplifier into a voltage amplifier. The output voltage is then obtained by subtracting the voltage drop across the load resistance from the supply voltage. This process results...
186
Bus Impedance Matrix01:24

Bus Impedance Matrix

149
Calculating subtransient fault currents for three-phase faults in an N-bus power system involves using the positive-sequence network. When a three-phase short circuit occurs at a specific bus, the analysis uses the superposition method to evaluate two separate circuits.
In the first circuit, all machine voltage sources are short-circuited, leaving only the prefault voltage source at the fault location. The positive-sequence bus impedance matrix can be determined by solving the nodal equations,...
149

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Diagnostic determinants of acid-fast bacilli culture positivity in miliary TB.

IJTLD open·2026
Same author

Lesion shrinkage and tooth preservation-based optimal timing for definitive surgery following marsupialization of cystic odontogenic jaw lesions.

Medicina oral, patologia oral y cirugia bucal·2026
Same author

Construction of CPW Pogo Pin Probes for RFIC Measurements.

Sensors (Basel, Switzerland)·2025
Same author

50 GHz Four-Port Coupling-Reduced Probe Card Utilizing Pogo Pins Housed in Custom Metallic Socket.

Sensors (Basel, Switzerland)·2024
Same author

Clinical and imaging features of drug-susceptible and multidrug-resistant TB in Korean adults.

The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease·2023
Same author

Intravenous iron isomaltoside (Monofer)-induced hypophosphataemia: a case report.

Hong Kong medical journal = Xianggang yi xue za zhi·2022
Same journal

RETRACTED: Zhang et al. A Novel Framework for Reconstruction and Imaging of Target Scattering Centers via Wide-Angle Incidence in Radar Networks. <i>Sensors</i> 2025, <i>25</i>, 6802.

Sensors (Basel, Switzerland)·2026
Same journal

Enhancing Unsupervised Multi-Source Domain Adaptation for Person Re-Identification via Mixture of Experts and Graph-Based Relation.

Sensors (Basel, Switzerland)·2026
Same journal

Development of an Instrumented Glove for Palmar Pressure Assessment in Kayakers.

Sensors (Basel, Switzerland)·2026
Same journal

Development and Experimental Validation of an Autonomous IoT-Based Monitoring System for Real-Time Water Quality Assessment in the Amazon River.

Sensors (Basel, Switzerland)·2026
Same journal

Semi-Supervised Adversarial Learning Framework for Controller Area Network Bus Intrusion Detection.

Sensors (Basel, Switzerland)·2026
Same journal

Smart Optimization Method for Safety Signs in Innovative Manufacturing Environments Integrating Industrial Field IoT Sensors and Knowledge Graphs.

Sensors (Basel, Switzerland)·2026
See all related articles

Related Experiment Video

Updated: Jul 24, 2025

Scanning-probe Single-electron Capacitance Spectroscopy
10:53

Scanning-probe Single-electron Capacitance Spectroscopy

Published on: July 30, 2013

13.1K

Low-Loss Pogo Pin Probe Card with a Coupling Isolation Structure up to 50 GHz.

K M Lee1, S Ahn2, E Park2

  • 1School of Electrical Engineering, Korea University, Seoul 02841, Republic of Korea.

Sensors (Basel, Switzerland)
|July 8, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces a novel millimeter wave RF probe card design that effectively eliminates resonance and signal loss. Optimized ground surface and signal pin placement ensure reliable high-frequency signal transmission for chip testing.

Keywords:
PCB circuit designRF probe cardsmm wave RF testingresonance removal technique

More Related Videos

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
05:57

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

8.1K
Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics
10:39

Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics

Published on: August 5, 2020

6.9K

Related Experiment Videos

Last Updated: Jul 24, 2025

Scanning-probe Single-electron Capacitance Spectroscopy
10:53

Scanning-probe Single-electron Capacitance Spectroscopy

Published on: July 30, 2013

13.1K
Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
05:57

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

8.1K
Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics
10:39

Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics

Published on: August 5, 2020

6.9K

Area of Science:

  • Electrical Engineering
  • Radio Frequency (RF) Engineering
  • Materials Science

Background:

  • Millimeter wave (mmWave) frequencies present unique challenges in RF probe card design due to resonance and signal loss.
  • Dielectric sockets and pogo pins can act as resonators at mmWave frequencies, particularly when their height matches half wavelengths.
  • Signal integrity issues arise from impedance mismatches and electromagnetic interference at these frequencies.

Purpose of the Study:

  • To propose and validate a novel millimeter wave RF probe card design that mitigates resonance and signal loss.
  • To optimize the placement of ground surfaces and signal pogo pins for improved high-frequency performance.
  • To enhance signal transmission reliability for system-on-chip (SoC) testing.

Main Methods:

  • A new probe card design incorporating optimized ground plane shielding and precise signal pin positioning was developed.
  • Electromagnetic resonance was addressed by strategically positioning the ground surface and signal pogo pins.
  • The impact of signal pin location on signal discontinuity was investigated through measurements.
  • A prototype probe card was fabricated and tested for insertion loss and resonance elimination.

Main Results:

  • The proposed probe card design successfully eliminated resonance issues common in mmWave applications.
  • Insertion loss performance of -8 dB was achieved up to 50 GHz.
  • Signal transmission to a system-on-chip with an insertion loss of -3.1 dB was demonstrated in practical chip tests.
  • The ground plane acted as an effective shielding structure, minimizing resonance and radiation loss.

Conclusions:

  • The novel RF probe card design effectively resolves resonance and signal loss problems at millimeter wave frequencies.
  • Optimized component placement and ground plane shielding are critical for achieving high-frequency signal integrity.
  • The developed probe card enables reliable and efficient testing of system-on-chip devices at mmWave frequencies.