
P. C. Electronics 2522 Paxson Lane Arcadia ... 1-626-447-4565
... Diamond F718x antennas with >20 ft separation is also used. A simple starter antenna for home or portable is the ground plane you can make yourself - see our application notes web page. For every 6 dB of increase between two fixed points, you will gain one P unit or double the distance to a farther ...
... Diamond F718x antennas with >20 ft separation is also used. A simple starter antenna for home or portable is the ground plane you can make yourself - see our application notes web page. For every 6 dB of increase between two fixed points, you will gain one P unit or double the distance to a farther ...
An improved method to measure the antenna resistance and
... the calculation, the transmission line was divided from the output of the matching system till the end of the vacuum feedthrough line into short sections with a maximum length of 0.1 m. The different characteristics of the lines like conductivity and diameters of inner and outer conductor were used ...
... the calculation, the transmission line was divided from the output of the matching system till the end of the vacuum feedthrough line into short sections with a maximum length of 0.1 m. The different characteristics of the lines like conductivity and diameters of inner and outer conductor were used ...
tech 00025-2011 diagnosing ais transponder alarms
... 3V3 alarm The internal 3V power supply is outside of the allowable range. Possible causes are: 12V power supply is outside of allowable range: Internal failure ...
... 3V3 alarm The internal 3V power supply is outside of the allowable range. Possible causes are: 12V power supply is outside of allowable range: Internal failure ...
Dipoles For Dummies, Part 1 -- Basic
... Note, that even in the case of the monopole no “ground” is needed to operate. Referring to our clapping analogy again, consider the case where you are asked to clap with one hand in your pocket. You take your free hand and find something to clap against such as your desk, a table, or wall, that’s ex ...
... Note, that even in the case of the monopole no “ground” is needed to operate. Referring to our clapping analogy again, consider the case where you are asked to clap with one hand in your pocket. You take your free hand and find something to clap against such as your desk, a table, or wall, that’s ex ...
Senior Project Proposal - University of New Hampshire
... a pole at a set height. The antennas will be rotated on azimuth to asses the two dimensional radiation pattern. For the purpose of this design the radiation pattern in the vertical plane will not be considered as it is expected to have little effect on the results. Because this device is being built ...
... a pole at a set height. The antennas will be rotated on azimuth to asses the two dimensional radiation pattern. For the purpose of this design the radiation pattern in the vertical plane will not be considered as it is expected to have little effect on the results. Because this device is being built ...
antennas - N8PR-Pete Rimmel`s Homepage
... trapped antennas. They cover the 10-15-20 Meter Bands but not the WARC bands 12 & 17 M. The reason that there are so many is that they have been around much longer, since they were designed before the WARC bands were created. Also, they are in demand by contesters where only the non-WARC bands are u ...
... trapped antennas. They cover the 10-15-20 Meter Bands but not the WARC bands 12 & 17 M. The reason that there are so many is that they have been around much longer, since they were designed before the WARC bands were created. Also, they are in demand by contesters where only the non-WARC bands are u ...
System Elements
... 6B Hub Transceiver Outdoor, weather proof, mast mounted enclosure DC Power and remote communications are diplexed on to the IF cable, single cable between ODU and IDU. Requires a Bias “T” with indoor transceiver power supply. 2 frequency bands, 2.5 and 3.5 GHz Can use 2 antennas which impro ...
... 6B Hub Transceiver Outdoor, weather proof, mast mounted enclosure DC Power and remote communications are diplexed on to the IF cable, single cable between ODU and IDU. Requires a Bias “T” with indoor transceiver power supply. 2 frequency bands, 2.5 and 3.5 GHz Can use 2 antennas which impro ...
UNIT 1
... trapped antennas. They cover the 10-15-20 Meter Bands but not the WARC bands 12 & 17 M. The reason that there are so many is that they have been around much longer, since they were designed before the WARC bands were created. Also, they are in demand by contesters where only the non-WARC bands are u ...
... trapped antennas. They cover the 10-15-20 Meter Bands but not the WARC bands 12 & 17 M. The reason that there are so many is that they have been around much longer, since they were designed before the WARC bands were created. Also, they are in demand by contesters where only the non-WARC bands are u ...
RF in the SHACK and OTHER GROUNDING MYTHS
... safety needed when doing this test BEFORE you attempt it. If the toaster time is too far off then drink a quart of liquid, wait an hour or so, and then wee on the ground rod and make sure you wee about ¾ of the quart out (do not have the toaster connected or operational). Wait 1 hour and re‐test w ...
... safety needed when doing this test BEFORE you attempt it. If the toaster time is too far off then drink a quart of liquid, wait an hour or so, and then wee on the ground rod and make sure you wee about ¾ of the quart out (do not have the toaster connected or operational). Wait 1 hour and re‐test w ...
Design of a passive RFID based Sensor System
... communication ranges, but also the highest production and development costs. The benefit of passive RFID sensor systems is the possibility of a completely wireless measurement. It is possible to measure system states in separate areas as behind walls. The data may be captured without a local power s ...
... communication ranges, but also the highest production and development costs. The benefit of passive RFID sensor systems is the possibility of a completely wireless measurement. It is possible to measure system states in separate areas as behind walls. The data may be captured without a local power s ...
POLARIZATION
... The geometric figure traced by the sum of the electric field vectors over time is, in general, an ellipse as shown in Figure 2. Under certain conditions the ellipse may collapse into a straight line, in which case the polarization is called linear. In the other extreme, when the two components are o ...
... The geometric figure traced by the sum of the electric field vectors over time is, in general, an ellipse as shown in Figure 2. Under certain conditions the ellipse may collapse into a straight line, in which case the polarization is called linear. In the other extreme, when the two components are o ...
Magnetic Field Probes: What it is and how to make it (if you don`t
... Object with high current, low voltage: Magnetic field Object with high voltage, low current: Electric field Note that there is no such thing as purely electric or purely magnetic field. Since the ratio of E and H are not constant (like in far field) we consider the E and H field separately ...
... Object with high current, low voltage: Magnetic field Object with high voltage, low current: Electric field Note that there is no such thing as purely electric or purely magnetic field. Since the ratio of E and H are not constant (like in far field) we consider the E and H field separately ...
Hanyang University
... b. Wire is curved, bent, discontinuous, terminated or truncated it makes radiation. - 3. Charge is oscillating It radiates even if wire is straight. ...
... b. Wire is curved, bent, discontinuous, terminated or truncated it makes radiation. - 3. Charge is oscillating It radiates even if wire is straight. ...
Analysis of Radiation Patterns of Log-Periodic Dipole
... input impedance, VSWR and radiation pattern should be very similar to the values from the previous period. Equation for σ is related to the spacing between adjacent elements. This space shrinks when frequency increases. One way to make each cycle as similar as the preceding one is to make design par ...
... input impedance, VSWR and radiation pattern should be very similar to the values from the previous period. Equation for σ is related to the spacing between adjacent elements. This space shrinks when frequency increases. One way to make each cycle as similar as the preceding one is to make design par ...
Amateur Radio Technician Class Element 2 Course Presentation
... A. Lower frequency RF fields have more energy than higher frequency fields B. Lower frequency RF fields do not penetrate the human body C. Higher frequency RF fields are transient in nature D. The human body absorbs more RF energy at some frequencies than at others ...
... A. Lower frequency RF fields have more energy than higher frequency fields B. Lower frequency RF fields do not penetrate the human body C. Higher frequency RF fields are transient in nature D. The human body absorbs more RF energy at some frequencies than at others ...
A Beginner`s Tutorial for 4NEC, a NEC2 Distribution Written and
... one line and another. The number of segments a line is broken into defines how accurate the simulation is. At the same time, the more segments there are, the more time it will take the program to run. As a rule of thumb, each segment should be between Lambda/10 and Lambda/100. (For example, a half w ...
... one line and another. The number of segments a line is broken into defines how accurate the simulation is. At the same time, the more segments there are, the more time it will take the program to run. As a rule of thumb, each segment should be between Lambda/10 and Lambda/100. (For example, a half w ...
Pin Description
... The antenna ‘hot end’ should be kept clear of any objects, especially any metal as this can severely restrict the efficiency of the antenna to receive power. Any earth planes restricting the radiation path to the antenna will also have the same effect. Best range is achieved with either a straight p ...
... The antenna ‘hot end’ should be kept clear of any objects, especially any metal as this can severely restrict the efficiency of the antenna to receive power. Any earth planes restricting the radiation path to the antenna will also have the same effect. Best range is achieved with either a straight p ...
Aalborg Universitet Compact dipole nanoantenna coupler to plasmonic slot waveguide Andrei
... power leakage to gold-silica surface plasmon polaritons and radiation modes [16]. The excitation source (port 1) was placed in vacuum 300 nm above the silica surface. The excitation spot had a Gaussian profile with the effective diameter (at the 1∕e2 intensity level) of 2.5 μm, which corresponds to ...
... power leakage to gold-silica surface plasmon polaritons and radiation modes [16]. The excitation source (port 1) was placed in vacuum 300 nm above the silica surface. The excitation spot had a Gaussian profile with the effective diameter (at the 1∕e2 intensity level) of 2.5 μm, which corresponds to ...
Applications of Integrated Near-field Antennas for Diagnosis of
... also to be considered. The main future challenge of the global EM-Matrix project is to achieve the complete embedded acquisition system. Coupled to a signal processor, it should be a convenient system for both real time calibration and control of the chips under the module, so to optimize the switch ...
... also to be considered. The main future challenge of the global EM-Matrix project is to achieve the complete embedded acquisition system. Coupled to a signal processor, it should be a convenient system for both real time calibration and control of the chips under the module, so to optimize the switch ...
RECTENNA: INSET-FED AND EDGE-FED
... Special thanks go to the Departments of Electrical Engineering, Technology, and Space Studies at the University of North Dakota for participating in this project and providing the equipment necessary for manufacturing and testing. We also would like to thank the following individuals: Dr. Hossein Sa ...
... Special thanks go to the Departments of Electrical Engineering, Technology, and Space Studies at the University of North Dakota for participating in this project and providing the equipment necessary for manufacturing and testing. We also would like to thank the following individuals: Dr. Hossein Sa ...
Near and far field
The near field (or near-field) and far field (or far-field) are regions of the electromagnetic field around an object, such as a transmitting antenna, or the result of radiation scattering off an object. Non-radiative 'near-field' behaviors of electromagnetic fields dominate close to the antenna or scattering object, while electromagnetic radiation 'far-field' behaviors dominate at greater distances. Far-field E and B field strength decreases inversely with distance from the source, resulting in an inverse-square law for the radiated power intensity of electromagnetic radiation. By contrast, near-field E and B strength decrease more rapidly with distance (with inverse-distance squared or cubed), resulting in relative lack of near-field effects within a few wavelengths of the radiator.