beehive 101A Near Field Probe


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101A Near Field Probe                                                        


Near Field Probe

Description

The beehive 101A Near Field Probe are designed for identifying and fixing EMC problems. The 100A, 100B, and 100C are loop probes, and are sensitive to magnetic fields. The 100D isa stub probe, and is sensitive to electric fields.The loop probes have integrated electrostatic shields, providing isolation from commonmode signals. As a result, these probes deliver excellent repeatability. The different loop sizes allow the user to select the optimum probe for a given frequency, providing the optimum sensitivity and spatial resolution.The 100D stub probe, with its narrow tip, offers the highest spatial resolution. It is ideally suited to tasks such as tracking EMC sources down to the individual pins of an IC. Because of the planar construction of the probes, even the large loops are only 0.11” thick, allowing the probe to be inserted into narrow seams and gaps.


beehive Near Field Probe
Features

• An integrated electrostatic shield in the loop probes eliminates common-mode pickup.
• Multiple loop sizes offer optimum sensitivity and spatial resolution at different frequencies.
• Probe dimensions optimized for access to tight spaces.
• Calibrated sensitivity up to 3 GHz, depending on model. Usable to beyond 6 GHz.
• Can be driven by a signal source to generate fields for electromagnetic susceptibility testing.

beehive Near Field Probe
Applications

• Finding sources of EMC emissions problems.
• Injecting fields into circuits to identify those which are EMC-susceptible.
• Noninvasive probing of RF circuits. The probes can be used to measure the signals present on an operational PC board. For example, using a preamplifier, the probes can measure the characteristics of an oscillator, such as frequency, side bands, and phase noise.


beehive Near Field Probe
Specifications

  • Dimensions:
        Length, excluding connector: 6.35”
        Probe tip thickness: 0.11”

 Model Number   Tip Diameter (in / cm)  Loop Diameter (in / cm)
 100C (large loop)  1.0 / 2.54  0.85 / 2.159
 100A (medium loop)  0.5 / 1.27  0.4 / 1.016
 100B (small loop)  0.25 / 0.635  0.15 / 0.381
 100D (stub)  0.08 / 0.2032  N/A

  • Sensitivity:
100 A/ 100B / 100C Loop Probes
    The probe output power into a 50 ohm load and the magnetic flux density are related by the following             equation:
    Pout = X + 20*log10(B) + 20*log10(F) , or alternatively,
    20*log10(B) = Pout – X - 20*log10(F)
    Where
    B is the magnetic flux density, in tesla
    F is the frequency of the received signal, in megahertz
    Pout is the probe output power into 50 ohms, in dBm
    X is a scale factor from the table below:

 Model Number   X  3 dB Frequency (MHz)  First Resonance (MHz)
 100C (large loop)     85.1     50 500 
 100A (medium loop) 65.2 1000 2600 
 100B (small loop) 42.2 3100 >6000 
 
100D Stub Probe
    The probe output power into a 50 ohm load and the electric field strength are related by the following equation:
    Pout = -113.2 + 20*log10(E) + 20*log10(F), or alternatively,
    20*log10(E) = Pout + 113.2 - 20*log10(F)
    Where
    E is the electric field strength, in volts/meter
    F is the frequency of the received signal, in Megahertz
    Pout is the probe output power into 50 ohms, in dBm

  
RF Connector
    SMB male, 50 ohms


        PLANAR 808/1  beehive 100 Series Near Field Probe 文件下載  


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