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Communications and data transmission antennas, manufacturing and development of communications antennas for Wireless LAN, ISM band, and small cell applications

Contact our engineers with your antennas needs has an antenna for every application. We will design the system based on your technical specs. sales@oksolar.com

 

Antennas – A Brief Tutorial
 

Antennas are simply lengths of conductive metal that radiate radio signals into the air. Most common antennas are designed to be one-quarter, sometimes one-half, the wavelength of the radio signal they are to transmit/receive. Wavelength is calculated with the formula: Wavelength (meters) = 300/frequency (MHz).

For example, Phoenix Contact wireless modules use frequencies ranging from 902-928MHz, so based on this formula, the wavelength of our radio signals are approximately one-third of a meter, or one-foot.

Keeping in mind then that antennas are generally one-quarter wavelength of the radio signal, our basic antennas for the 900MHz are typically no more than 3 inches in height.

ANTENNA TYPES
There are wide varieties of antennas used for the transmission of radio signals in the world today. The basic antenna is known as an “omni-directional.” Omni antennas radiate their RF energy in all directions, essentially outwards in a three-dimensional spherical pattern. Omni antennas usually resemble vertical rods but can come in other shapes as well. Some have horizontal rods of the same length placed at their base to increase their performance/distance. These are called “ground planes.”

Other antenna types include the “dipole”, where a section of wire, one-half the wavelength, is positioned either horizontally or vertically in the air to transmit signals. Dipoles emit their signals in more of a two dimensional semi-circular or “doughnut” pattern, the key being both the transmitter and receiver’s antennas must be aligned the same (horizontally or vertically). Dipoles do not require a ground-plane are considered “bi-directional,” in that their signals travel in two opposite directions, depending on how the antenna is oriented.

The more focused (uni-directional) type of antenna is called a “Yagi.” A Yagi antenna is basically a standard one-half wavelength antenna, but with additional “elements” placed in front of it to focus the
energy for transmission in one direction. The “reflector” and “director” elements are just similar-sized resonators spaced appropriately to increase the strength and narrow the direction of the signal prior to
transmission. Again, the key to successfully using Yagi antennas is the correct orientation and alignment of the transmitting/receiving antennas.

ANTENNA GAIN
Antenna "gain" is a word that seems to strike fear in the hearts and minds of uninitiated radio users everywhere. It is often the word used to refer to some sort of mysterious signal amplifier, yet never really
understood. However, one antenna with a “higher” gain does not amplify the signal more than another with "less" gain, as most people think. An antenna with greater gain simply focuses the energy of the signal differently.
 

To get a handle on "gain," let's talk about it in terms using a megaphone. When you want to get your message across a noisy stadium you can do two things with that megaphone to get the result: 1) you can shout into it as loudly as possible, and 2) you can direct the focused end of the megaphone toward the listener. The same two actions can be applied to sending a radio signal farther. First you can increase the transmit power (to a limit of 1 Watt for spread spectrum radios, FCC Part 15), and second you can "aim" the power that's radiating from the antenna toward the receiver. Aiming the power is the "gain." Taking this one step further, if someone in the stadium also had a megaphone and really wanted to hear what you had to say they could put their megaphone to their ear and aim the open end toward you, thereby focusing in on what's being transmitted from your location. Likewise, a receiving radio gets "gain" by focusing the direction of the "listening" antenna toward the source. In other words, gain is simply how you focus the radiated energy at the transmitter and how you focus the ear of the receiver.

Now, how does gain apply to the two types of antennas (omni and yagi) most commonly used in spread spectrum industrial radio installations? In very simple terms, omni antennas radiate transmit power (the signal) in all directions (360 degrees) and listen for incoming messages from all directions. Yagi (directional) antennas focus their radiated transmit power in one direction and also listen for incoming signals with a more focused ear. Yagi antennas, therefore, tend to send a signal farther than omni antennas with the same gain. Yagis are the megaphones in the antenna world.

For the majority of MCR-RAD applications, the standard 1/4 wave whip unity-gain antennas purchased along with the equipment work just fine. However, sometimes you need to send the signal further and to do so, you must play within the rules laid out by the FCC in Part 15 of their guidelines. The two rules of most interest to the spread spectrum radio user are: 1) the maximum transmit power of the spread spectrum radio is 1 Watt, and 2) the maximum gain of a spread spectrum system must not exceed 6dB.


WHAT DOES “dB” STAND FOR?
Here’s the technical definition. “dBm” (often referred to simply as “dB”) is the Power Ratio of the radio relative to 1mW. For example, a 1mW power level is referred to as 0dB. Likewise, a 1000mW, or 1W, power level can be referred to as 30dB. A 1/1000mW power level is –30dB, and the threshold sensitivity of an MCR-RAD, which exceeds 1/10000000000mW, can be more easily expressed as –110dB. As you can see, a MCR-RAD receiver doesn’t need to capture very much energy from its transmitter in order to maintain a solid lock and secure data.

Now let’s make this easier.
Since many folks who use the MCR-RADs are unfamiliar with radio theory and are simply looking for an easy-to-use cable and conduit replacement, we reassure them it is simply sufficient to know that 6dB of antenna gain (remember that "gain" has to do with focusing the energy radiated from the antenna) more or less doubles the distance a signal will travel with no obstructions. For example, if a "no gain" (0dB) 1/4 wave omni antenna sends a 1 Watt MCR-wireless device signal 4 miles in perfect line-of-sight conditions, a 6dB gain antenna should send the signal 8 miles. In other words, we say "Don't worry about the specifics of dB measurement, it's not necessary to be a radio expert."

How do antennas increase the distance like that? Simply put, omni antennas that radiate energy in a sphere with no gain "squish the sphere into a donut shape" as the gain is increased. The more you “squish the sphere,” the larger the radius of the donut becomes. Less energy sent vertically means more energy sent out in a horizontal direction. In a similar fashion, a directional yagi antenna takes the energy about to be radiated and focuses it in one direction. Using an analogy, the higher the gain a yagi antenna has the more narrowly its energy is focused, so that its "beam" changes from a street lamp to a lighthouse to a laser as the gain is increased. You can see why aiming becomes important with a high gain yagi.

dB LOSES AND CABLING
Now, back to the FCC rules. At first glance, it may appear that if you were using a 1 Watt MCR-wireless devices you would never need an antenna that exceeds a 6dB rating, but this isn't quite true. The 6dB applies to the system and the system includes cables and connectors as well as the antenna. But what do the cables and connectors have to do with it? Cables and connectors have a "dB loss" rating. For example, RG58 cable loses 16dB per 100', RG213 loses 7.6dB per 100' and LMR400 cable loses 3.9dB per 100'.

Connectors also have loss ratings, although they are minimal. So if you have an application where you need to add quite a bit of cable in order to get out of a building, or up a tower, these losses have to be taken into account.

Here's an example. Let's say you have an MCR-RAD at a water tank, nine miles away from your control room. You know you'll need to get as much gain as possible to send the signal so you decide on a 6dB directional yagi antenna, thinking this is the maximum antenna gain you’re allowed. But let's say you've decided to put the yagi antenna near the top of a tower close to the tank so that you can clear a stand of trees and a few houses. The antenna will be 60 feet in the air and the rest of the cable run adds another 40 feet. You decide on LMR400 cable with a few connectors. Based on the cable losses quoted above, this means that the total system loss will be approximately -4dB. Add this to the antenna gain of +6dB and your system now has a total gain of only 2dB. Will this get the signal nine miles? Probably not. So in this case, you would need to purchase a 10dB directional yagi so that once all the losses (-4dB) are factored in you still end up with the maximum gain allowed (6dB) and required.
 

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Communications and data transmission antennas, manufacturing and development of communications antennas for Wireless LAN, ISM band, and small cell applications
Communications and data transmission antennas, manufacturing and development of communications antennas for Wireless LAN, ISM band, and small cell applications

Communications and data transmission antennas, manufacturing and development of communications antennas for Wireless LAN, ISM band, and small cell applications


ORiNOCO OR (Outdoor Router) Antennas & Accessories

ORiNOCO OR antennas provide for good transmission distances between two or more buildings. Available for directional configurations (point-to-point), omni-directional configurations (point-to-multipoint) and mobile outdoor roaming configurations (for mobility within a cell).

 

 

UPS and Backup power systems? automatically detects the power failure and instantly becomes a quality power source utilizing true sine wave technology that better than utility grade. All this, without interruption.

 Backup power generation for critical infrastructure such as: Airport Lighting, Communicatins infrastructure, Gas Stations, Hospital EMS, Traffic intersections control system, Rail Roadssiganling, etc.

OkSolar Solar Energy, manufactures the highest performance solar Powered products in the world.

Based on advanced NASA & Department of Energy Technologies, OkSolar's products are lightweight, portable, & rugged enabling new & innovative commercial consumer, military, & industrial applications.

Our vision is to bring energy to each and every facet of lifeTurnkey energy systems that offers Solar PV-to-Hydrogen-to-Fuel Cell optional Wind and Gas Electricity.


 

Oil and Gas, Security, Monitoring and Control Communications, Telecom Networks, Traffic Safety

Oil and Gas: solar power systems, solar for oil and gas, well site automation, cathodic protection, remote power, photovoltaic systems, SCADA power systems, telecom power supply, remote monitoring, wireless, security power systems


Security: outdoor power for security equipment, solar power systems, power for CCTV, remote power, security cameras, data collection power systems, intrusion alarms, remote monitoring, power for access controls, security lighting, security power systems.


Control and Data Acquisition (SCADA) networks used to monitor and control industrial applications such as:

Water and wastewater facilities, Industrial process control, Electrical substations, Large scale renewable energy generation, Automation and, Communications Networks, Workforce and automation and communications networks

Railroad, Construction, First responder secure networks, Millitary, logistics management of critical assets, Remote video monitoring and surveillance, WAN and LAN using WiFi and WiMax

power systems for monitoring and control, solar power systems, power for SCADA networks, water and wastewater facilities power, remote site power, video monitoring power, surveillance power systems, WiFi and WiMAx power systems, repeater power systems, industrial process control.

Outdoor power for telecom networks, solar power systems, power for microwave relays, BTS power, remote site power, power for microwave repeaters, telecommunication power systems, telecom switches, power for fiber optics, repeater power systems

Solar Power Systems for the Traffic industry:
solar power systems, solar for ITS, outdoor traffic safety equipment, traffic message boards, traffic counters, solar emergency call boxes, CCTV power, power for intelligent transportation systems, remote power, SCADA power systems, remote monitoring, wireless power systems


OkSolar.com Affiliate


BBS Battery backup system (BBs) that provide battery power to traffic intersections.


Traffic Lights Backup

 


Fully integrated power supplies designed for site loads requiring 12, 24, 36 or 48 volts DC. Each system provides safe and reliable power generation without the need and expense of installing utility power.
Power your electrical & electronics projects and applications with Solar Energy products from OkSolar.com. Our engineers can design the energy system to meet your demands. From 0.5 Watt to 100KWatts; DC or AC; and up to three-phase systems.

The SPDC/AC unit was designed to be easily expanded: power units can range from 2,000 Watts to 10,000 Watts. Its flexible platform design allows it to be easily customized for use with area lighting, remote communications, security systems, and surveillance equipment, to name a few applications. Charge power alone can be doubled or tripled with the addition of simple, cost-effective photovoltaic capture equipment. Pre-assembled & Factory Tested.

We offer Power Management with USB Biometric Passwordrd Manager provide users a convenient and secure way to manage and access multiple security phrases and codes. This product biometrically identifies users and gives them convenient access to password protected applications and web sites.

The SPDC/AC unit was designed to be easily expanded: power units can range from 2,000 Watts to 10,000 Watts. Its flexible platform design allows it to be easily customized for use with area lighting, remote communications, security systems, and surveillance equipment, to name a few applications. Charge power alone can be doubled or tripled with the addition of simple, cost-effective photovoltaic capture equipment. Pre-assembled & Factory Tested.

We offer Power Management with USB Biometric Passwordrd Manager provide users a convenient and secure way to manage and access multiple security phrases and codes. This product biometrically identifies users and gives them convenient access to password protected applications and web sites.

 -SPDC:
IQ Solar trees will Power the Future click here for more information or contact us! Free parking spaces are generally far too narrow and also very rare. From this point of view, the idea of using such parking spaces for solar trees appears quite illogical. However, at the front corners, where most cars are rounded, there is enough space to install them. With an average power of 400 Wp, the individual units are admittedly not particularly powerful, but there are many free corners, which add up to a lot of electricity. UPS systems by IQUPS.

-SPDC Determining the Correct System:
To determine if IQUPS Power system will meet your solar power requirements, first choose what DC voltage your system will operate on, then calculate the Total Equipment Load in Amp-hours per Day. Next, looking at the map of the U.S., determine your Solar Resource. Then, using the selection matrix on the page, choose the appropriate system.

Traffic Lights Backup


IQUPS Remote control around the world!

Check the status of your Power Plant – from your home, your office or anywhere you may be. A PC with an internet browser is all that is needed to access the system.Communications provides complete plant monitoring, remote diagnosis, data storage and display. It features an integrated HTTP web interface that allows you to access plant information via a PC, regardless of operating system or browser type.

IQUPS Remote Control the link between the PV plant and its owner. It combines computing power, storage capacity, and versatile communications interfaces in a compact enclosure. The data-logger offers up-to-date display and control options on the internet.

Data transfer and plant configuration via the internet is handled either by Ethernet connection or telephone modem. Data transfer is automatic – all you have to do is set the desired intervals. IQUPS View communicates PV system status from the IQUPS.com controller over a broadband or wireless internet connection to a website for 24/7 access. The website displays real- time and historic data as well as advance alerts of any potential system problems. All of the hardware and software is included to enable a simple plug and play installation. By avoiding expensive site visits, the IQUPS Web View will reduce the life cycle costs of off-grid PV systems. Battery Bank.
Solar power systems for hazardous locations are certified Class l Div ll and as such are approved for use the United States. Systems are engineered to meet the new International Standard IEC-E60079-15:02 - Electrical apparatus for explosive gas atmospheres-Part 15:Type of protection n requirements for solar/battery powered installations.

 


Traffic Application:

-Keeping Traffic Moving When The Power Goes Out Item#1608450 Portable Solar Powered 120 volts 60Hz. or 230 Volts 50 Hz, Portable Solar Powered 220 Volts 50 Hz, Portable Solar Powered 230V 50Hz, Portable Solar Powered 220Volts 50Hz pedestrian signals, A 120 or 240 V, 100 amp, single-phase IQUPS.com transfer panel is used to activate the generator at the loss of power. According to IQUPS, the generator assumes the full load in seven seconds. When utility power is restored, the generator shuts off and signal operation is automatically returned to the normal power source. "The IQUPS1800 will completely run the intersection stoplights," said general manager for the DOT. "Other backup systems will put the lights to flashing red. When the generator kicks in on the IQUPS1800, the lights will fully function for 25 to 40 hours, depending on the load at the intersection. When power is restored, the system returns to utility power and the traffic signals do not need to be reset." Battery Backups Prevent Accidents at Critical Traffic Signals Additional Applications Being Taken for More Intersections Keeping Traffic Moving When The Power Goes Out Portable Solar Power 120 Volts 60 Hz or 230 Volts 50Hz, Traffic Portable Solar Power 120 Volts 60 Hz Thanks to new IQTraffiControl.com energy-efficiency technology, different Cities, towns and counties will keep their traffic signals safely operating even if the electricity goes out, and other local governments. Intersections have been converted to new LED signal lights utilizing more efficient, LED (light emitting diode) lamps. The new lamps cut the amount of electricity used by each light from as much as 150 watts to between 10 to 25 watts. Because LEDs use so much less electricity, it is now technically possible to provide battery backup power to alike. We also Have Fuel Cells Traffic Backups.

IQ UPS Traffic Back-up Standby Power Generation.

- Battery backup systems for LED traffic Signs -

IQUPS Battery Backups Prevent Accidents at Critical Traffic Signals
Increase the public safety and reduced traffic congestion by allowing traffic lights to function even during a power failure. A typical traffic signal intersection experiences eight to ten local power outages annually. With battery backup 3 power, some or all the traffic control signals can continue to operate. This seamless switchover to battery power increases public safety and eliminates the need to dispatch police or other service personnel to direct traffic. If all traffic signals were converted to LEDs, the battery backup system would allow full operation of the traffic signals during a power outage, thus alleviating traffic congestion.

Traffic Lights Backup

-Application:
Enhancing all types of roadway signs (stop, yield, wildlife, dangerous corners, etc.)
Marking temporary and permanent road barricade marking
Flashing flagger
Enhancing safety at construction and detour zones
Indicating bridge and tunnel entrances
Marking hazards and infrastructure at industrial sites

-BENEFITS

-Quick installation - no external wiring, cable trenching.
-Flexible design enables any configuration of bi-directional or dual flasher solution.
-Pays for itself within the first year of operation in the form of reduced installation, maintenance and servicing costs
-Self-powering capability means it can be installed anywhere
-Reliable operation 365 days per year at nearly any location on earth
-IQ Engineered for up to five (+) years of maintenance-free operation


Optional
Wireless Communications Oksolar.com also provides remote-control and paging equipment to control flashing systems from a central office or computer network, with custom design and field engineering services available to support our nationwide dealer network.

Traffic Lights Backup




IQ Solar trees will Power the Future click here for more information or contact us! Free parking spaces are generally far too narrow and also very rare. From this point of view, the idea of using such parking spaces for solar trees appears quite illogical. However, at the front corners, where most cars are rounded, there is enough space to install them. With an average power of 400 Wp, the individual units are admittedly not particularly powerful, but there are many free corners, which add up to a lot of electricity. UPS systems by IQUPS

 

IQ Solar Trees future power



 

UPS electrical systems

Systems are complete, fully integrated power supplies designed for site loads requiring 12, 24 or 48 volts DC. Each system provides safe and reliable power generation without the need and expense of installing utility power.

The sealed, maintenance free batteries are designed for deep cycle operation and extended life in solar applications.

The aluminum array support structures and battery enclosures are strong yet lightweight and corrosion resistant for harsh marine or severe weather locations. Because SPDC Systems are designed to withstand rugged transportation to remote sites, single-lift integral lifting lugs and/or forklift slots are provided.

Optional helicopter handling features are also available.

The system is fully assembled for factory testing before shipment. The pre-wired systems are typically shipped fully assembled with a protective cover over the array and are bolted to a skid. The solar array for larger systems is shipped in a separate plywood crate and the battery enclosure is mounted on a skid. In some cases, batteries are shipped separately.

Systems carry a one-year system warranty for materials and workmanship. A three-year performance warranty is available on pre-packaged systems. The solar modules have up to a 25-year warranty. Careful component selection results in a system with a lifetime exceeding 25 years with battery replacements every five to ten years.

High-efficiency, single crystalline solar modules deliver maximum power output and carry up to a 20–year warranty PV array shades battery box to minimize battery temperature extremes Insulated battery enclosure is available in a variety of materials and finishes Preassembled and pre-wired systems minimize field installation time NEC code compliant over-current protection and safety disconnect Universal anti-theft mounting hardware available for outdoor Corrosion resistant control/battery enclosure Solid state electronics display battery state-of-charge and controller status/errors Solar modules are fully encapsulated to resist harsh weather conditions.


Technical Information:

HOW TO:
Determine your daily equipment load requirement in Amp/hrs/day at the specified voltage. Note: For loads with a duty cycle please estimate hours per day for transmit, receive and standby. For variable loads please estimate hours/week, divide by 7 = hours/day column.

Endless possibilities and configurations Different designs and styles to accommodate your site needs you can request different components. Overall Dimensions and Weight will be based on the components.

Features:
-Heavy Duty NEMA 3R or NEMA 4 Cabinet - Powder Coated Aluminum or Steel.
-Large electronics compartment  houses PV charge controller and DIN RAIL mounted circuit protection for load, array and batteries.
-Battery compartment holds one, two or four sealed
batteries
-Vented or insulated battery cabinet design is suitable for installation in hot or cold climate conditions.
-High efficiency solar panels
-Maintenance free, sealed gel cell non-spill able batteries
-Low voltage load protection and temperature compensated charging
-Din-Rail mounted circuit breakers for easy access
-Load, array and battery disconnects
-Durable, lockable, powder-coated white aluminum battery control enclosure
-Heavy-duty mounting structure
-Extra room for your equipment - each system package has roughly 12 cu/in of extra space in the electronics compartment. -There is plenty of room for you to add your own SCADA, radio, GPS or VSAT equipment
-Stainless steel hardware
-Color-coded, pre-cut wiring harness for fast installation
-Simple installation / operations manual and complete system schematics
-Up to 25-year warranty on solar modules and a full 12-months on the complete system
-Approved Class I, Div. II hazardous location safety rating available ou on request (UL Pending)
-Solar modules are fully encapsulated to resist harsh weather conditions
-Stand-alone or hybrid systems
-Self-supporting, ballasted design requires no foundation
-NEC code compliant overcurrent protection and safety disconnect
-Adjustable array maximizes power output
-Corrosion resistant control/battery enclosure
-Installation, operation & maintenance documentation
-Pre-assembled and factory tested for easy installation
-Clean, renewable energy provides low environmental impact
-Factory testing for quality assurance
-Low maintenance and operating costs
-Complete systems reduce specifying and buying time
-Quality components assure long system life
-Reliable, continuous power


OkSolar.com Serving The Industry Since 1988.
All rights reserved. All trademarks or product names mentioned herein are the property and responsibility of their respective owners.
Credit Pictures provided by PIX along with DOE/NREL


 


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  All rights reserved. All trademarks or product names mentioned herein are the property and responsibility  of their respective owners. 
Credit Pictures provided by PIX along with DOE/NREL 

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