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R3-2 125 KHz Low Frequency Readers up to 3 feet - RFID, Inc.
125 KHz Low Frequency Readers
Our R32 line of 125 KHz RFID Readers continues to be by far the most advanced LF hardware on the market since its debut in 2002. Termed "Smart Antennas", these RFID Readers are designed for factory floor identification applications requiring Robust, Rugged, Rapid data capture (hence the R3). RFID Readers operate both...
Website:
http://rfidinc.com
Related topics : rfid lf 125 khz / rfid 125 khz antenna design / rfid 125 khz antenna / low frequency rfid reader / rfid reader antenna design
Designing an RFID antenna - Hackster.io
Designing an RFID antenna:
Basically I am motivated to replace the antenna on this RFID reader. The reader is really cheap, and fits my porpoise, its recognized as a USB keyboard.
My Idea is to build a new antenna that can be fitted into a PVC tube and have a usb "reading rod". Basically I want to make a new coil with copper cable which area is a rectangle instead of a square.
Hackaday has provided me with some information about this, but nothing useful about antenna modding.
Thanks a...
Website:
https://www.hackster.io
Related topics : 125khz rfid reader antenna design / rfid reader antenna design / rfid 125 khz antenna design / rfid tag antenna design / rfid antenna design
RFID Readers | TECTUS Professional RFID Sytem Components ...
Français
RFID Readers
Stationary and Portable RFID readers are available as Industrial- and also as EX certified versions. Desktop- Readers- and Programmers are suitable for safe industrial area. For integration of RFID in own hardware OEM Reader modules and OEM Reader boards are available.
The standard frequency ranges
LF 125 kHz / 134 kHz,
HF /NFC 13,56 MHz and
UHF 860 - 960 MHz
are...
Date: 2018-01-12 12:07:44
Website:
http://www.tec-tus.de
Diy rfid reader antenna TurkHub.net
GAO RFID's UHF 860-960 MHz 4 Port Long Range RFID Reader features a compact size, light weight and multi-regional flexibility. It has 4 antenna ports and is ...
Video
Playing with Radio Frequency Identification readers & writers Check out more of my Arduino & Electronics...
Website:
http://turkhub.net
Related topics : rfid uhf long range reader / rfid uhf long range antenna / long range passive rfid reader arduino / designing an uhf rfid reader antenna / uhf rfid reader antenna design
Mobile RFID Reader | TECTUS Professional RFID Sytem ...
MultiPen - 3 in 1 RFID Reader
The MultiPen is an innovative �Mobile RFID/NFC Reader, with capability of� reading UIDs of passive RFID TAGs with various� frequency combinations.�The MultiPen allows to transfer UID reads via Bluetooth to the host-computer (Tablet, Laptop or Smartphone). It is also possible to store the UIDs in the integrated data base of the MultiPen. After connecting via...
Date: 2018-01-12 06:45:56
Website:
http://www.tec-tus.de
RFID transceiver targets 125-kHz apps - Electronic Products
Operating in the 125-kHz frequency range, the MLX90109 RFID transceiver can be used in the design of car immobilizers, portable readers, access control, pet identification, and household appliances. Supply voltage...
Website:
electronicproducts.com
Related topics : rfid 125 khz antenna design / rfid 125 khz antenna / rfid transceiver chip
Low-Cost Solution for RFID Tags in Terms of Design and ...
Low-Cost Solution for RFID Tags in Terms of Design and Manufacture
Chi-Fang Huang1
[1] Institute of Communication Engineering, Tatung University, Taiwan
1. Introduction
Even invented and applied initially during the World War II, RFID (Radio Frequency IDentification) technologies [ 1 ] have attracted much attention recently. Precisely speaking, RFID technologies have been applied very widely in...
Website:
intechopen.com
Related topics : rfid tag antenna design and its em simulation based measurement method / low cost low power uhf rfid tag with on chip antenna / rfid tag production cost / hf rfid tag antenna / hf rfid tag antenna design
RFID Tags, RFID Labels | Express Corp
Radio frequency identification (RFID) tags are smart barcode tags that transmit data through radio frequencies. Radio waves transmit data from the RFID tag to RFID reader, which then transmits the data to an RFID computer program. Industrial RFID tags are used to track automobiles, machines, and inventory throughout harsh industrial environments.
Active vs. Passive RFID Tags
Active RFID tags are...
Website:
expresscorp.com
RFID frequency ranges - Centre National RFID
RFID frequency ranges
1. The RFID frequency spectrum
RFID is considered as a non specific short range device. It can use frequency bands without a license. Nevertheless, RFID has to be compliant with local regulations (ETSI, FCC etc.)
oLF : 125 kHz - 134,2 kHz : low frequencies,
oHF : 13.56 MHz : high frequencies,
oUHF : 860 MHz - 960 MHz : ultra high frequencies,
oSHF : 2.45 GHz : super high...
Website:
http://www.centrenational-rfid.com
Related topics : lf hf uhf rfid tags / passive rfid tag frequency range / difference between hf lf rfid tags / active rfid tag frequency range / hf rfid tag frequency
125 kHz RFID tag reader uses FSK to reduce collisions ...
The RFID (radio-frequency identification) system consists of an RFID tag, a reader, and a user-interface computer. The passive RFID tag contains a silicon chip and an LC antenna circuit. The passive tag is energized by an RF field that's transmitted by the reader (interrogation). Therefore, the tag doesn't require any batteries for its operation.
Passive RFID tags are used for animal tagging,...
Date: 2017-03-04 02:17:28
Website:
http://electronicdesign.com
Related topics : 125 khz rfid tag reader / passive rfid tag and reader / rfid active reader passive tag / passive rfid tag reader / rfid tag reader circuit diagram
125 kHz RFID tag reader uses FSK to reduce collisions ...
The RFID (radio-frequency identification) system consists of an RFID tag, a reader, and a user-interface computer. The passive RFID tag contains a silicon chip and an LC antenna circuit. The passive tag is energized by an RF field that's transmitted by the reader (interrogation). Therefore, the tag doesn't require any batteries for its operation.
Passive RFID tags are used for animal tagging,...
Date: 2019-04-10 21:52:41
Website:
electronicdesign.com
125 kHz RFID tag reader uses FSK to reduce collisions ...
Contributing Author | Oct 27, 1999
The RFID (radio-frequency identification) system consists of an RFID tag, a reader, and a user-interface computer. The passive RFID tag contains a silicon chip and an LC antenna circuit. The passive tag is energized by an RF field that's transmitted by the reader (interrogation). Therefore, the tag doesn't require any batteries for its operation.
Passive RFID...
Date: 2017-12-09 22:32:48
Website:
electronicdesign.com
NFC UHF Dual frequency EM4423 RFID hf rfid tags label ...
As a leading RFID company, we are known for our large selection of RFID hardware such as RFID Tags, RFID Card, RFID Inlay, RFID Wristband, RFID key fobs and RFID Readers that cover a large range of frequencies including Active 2.45 GHz, Gen 2 UHF 865-868 MHz, 902-928 MHz, High Frequency 13.56 MHz, and Low Frequency 125 KHz/134 KH--all designed with the leading edge in mind to offer amazing...
Website:
http://www.rfidsolutionglobal.com
RFID Key Fobs Explained – SUMOKEY
YELP
RFID Key Fobs Explained
These RFID systems are categorized by the frequency band in which it operates. Low, High or Ultra-high frequency. However, there are two major categories of RFID systems - Active and Passive, and we are explaining each of their types and frequencies below.�
Common Key Fobs
The common key fobs that are primarily used to access Condos, homes, apartment complexes,�...
Website:
https://sumokey.com
Key Fob Clone Copy and Duplication | sumokey.com
Sale price $79.75
RFID KEY FOBS EXPLAINED
These RFID systems are categorized by the frequency band in which it operates. Low, High or Ultra-high frequency. However, there are two major categories of RFID systems - Active and Passive, and we are explaining each of their types and frequencies below.�
Common Key Fobs
The common key fobs that are primarily used to access Condos, homes, apartment...
Website:
https://sumokey.com
RFID Consultant | RFID Consulting
RFID Consulting Services
SkyRFID is a is a leading provider of RFID hardware, solutions and technical consulting that is located in and near Toronto, Ontario, Canada.
SkyRFID provides RFID technical consulting services on-site, via web and via telephone for simple or fully detailed RFID consulting assignments.
Consulting services includes privacy consulting, new product designs for readers and...
Website:
http://www.skyrfid.com
Glossary of RFID, NFC, IoT - SMARTRAC N.V.
Glossary
Active Transponder
A transponder which contains a battery that provides the energy needed to transmit information and receive data.
�
Contact Card
Device in which the chip must have physical contact with the reader to allow data transmission. The chip must therefore be located on the surface to allow readers to establish contact with the chips and communicate with them.
�
Contactless...
Date: 2017-12-10 03:38:42
Website:
https://www.smartrac-group.com
RFID Coil Antenna, 125KHz | RF Solutions
Description:
RFID Coil Antenna, 125KHz�
The Micro RWD has been designed to interface to a simple low Q (10-20) antenna coil of around 700uH (micro Henry) inductance operating at a carrier frequency of 125 kHz.
Click links to download:
There are no documents available for this product.
Delivery
No matter where you are, the size of your order or how fast you need it - we have a delivery option for you!
UK Mainland orders: FedEx
All orders within the UK (excluding Scottish Highlands) are sent via FedEx which offers a fast, insured and tracked shipping method. Orders placed before 3pm Mon-Thu will be dispatched the same day for next day delivery*. Orders...
Website:
https://www.rfsolutions.co.uk
Related topics : 125khz rfid antenna coil / 125khz rfid antenna inductance / 125khz rfid antenna / micro rfid antenna / rfid 125 khz antenna design
ePanorama.net - Links
SmartCard Edit/Read/Write Software - for almost any kind of smartcard Rate this link
Smartcard articles
Java Card Security - How Smart Cards and Java Mix Rate this link
RFID tags connect smart cars to smart highways - small RF identification (RFID) tags are part of the critical communication link between automobiles and electronically directed "smart" highways and there are also...
Website:
http://www.epanorama.net
ElectricPCB: Creating a RFID Reader From Scratch Part 2
The transmitter is a simple current amplifier, where the transistors Q1 and Q3 will alternately pull the antenna voltage high and low depending on the "control" signal in to the amplifier, thus forcing a high current through the antenna. The important thing to note is that this circuit does not generate any frequency signal on itself, it requires a source that produces the correct frequency, the...
Date: 2018-09-30 08:08:18
Website:
https://electricpcb.blogspot.com
Related topics : rfid 125 khz antenna amplifier / rfid 125 khz antenna design / 125 khz rfid tag reader / rfid 125 khz antenna / design of rfid tag antenna matched to microchip
RFID Coil Antenna, 13.56MHz | RF Solutions
Description:
RFID Coil Antenna, 13.56MHz�
The MicroRWD MF (Mifare) module has been designed to interface to a simple high Q antenna coil of around 1uH inductance together with some capacitor and resistor components. The antenna coil and passive components form the tuned RLC (ResistorInductor-Capacitor) circuit, which is designed to resonate at the 13.56 MHz carrier frequency and have a Q factor...
Website:
https://www.rfsolutions.co.uk
Related topics : rfid 125 khz antenna design / antenna circuit design for rfid / rfid 125 khz antenna / rfid antenna design / rfid coil design
RFID TAG - rfenergie.com
RFID TAG
LF RFID
The LF band covers frequencies from 30 KHz to 300 KHz. Regularly LF RFID systems work at 125 KHz, in spite of the fact that there are some that work at 134 KHz. This recurrence band gives a short read scope of 10 cm, and has slower perused speed than the higher frequencies, yet is not exceptionally delicate to radio wave impedance.
LF RFID applications incorporate access control...
Date: 2018-01-02 06:56:51
Website:
http://rfenergie.com
Different Types of RFID System | Centrex Technologies
RFID systems can be broken down by the frequency band within which they operate: low frequency, high frequency, and ultra-high frequency. There are also two broad categories of RFID systems--passive and active. In the sections below we will explore the frequencies and types of RFID systems.
RFID Frequencies
Frequency refers to the size of the radio waves used to communicate between RFID system...
Website:
ctrx.com
The Different Types of RFID Systems | Oprfid.com
RFID systems can be broken down by the frequency band within which they operate: low frequency, high frequency, and ultra-high frequency. There are also two broad categories of RFID systems-passive and active. In the sections below we will explore the frequencies and types of RFID systems.
����RFID Frequencies
����Frequency refers to the size of the radio waves used to communicate...
Date: 2017-11-14 03:07:10
Website:
http://www.oprfid.com
Different Types of RFID Systems | Impinj
TYPES OF RFID SYSTEMS
�
Now that you know how RFID systems work, it's time to go deeper into the different types of systems available. RFID systems can be broken down by the frequency band within which they operate: low frequency, high frequency, and ultra-high frequency.
There are also two broad categories of systems--passive and active RFID. In the sections below we will explore the...
Website:
impinj.com
Different Types of RFID Systems | Impinj
TYPES OF RFID SYSTEMS
�
Now that you know how RFID systems work, it's time to go deeper into the different types of systems available. RFID systems can be broken down by the frequency band within which they operate: low frequency, high frequency, and ultra-high frequency.
There are also two broad categories of systems--passive and active RFID. In the sections below we will explore the...
Website:
impinj.com
The Different Types of RFID Systems - Bright Alliance ...
Every RFID system can be broken down by the frequency band in which it operates. Whether it is low, high or ultra-high frequency - there are many other categories of RFID systems as well. However, there are two major categories of RFID systems - active and passive, and we are explaining each of their types and frequencies below.
RFID Frequencies
The frequency refers to the size of the radio that...
Website:
http://www.batlgroup.net
The New Zealand RFID Pathfinder Group
Basic information about RFID
Introduction of RFID
Radio-frequency identification (RFID) is the wireless use of electromagnetic fields to transfer data, for the purposes of automatically identifying and tracking tags attached to objects. The tags contain electronically stored information. Some tags are powered by electromagnetic induction from magnetic fields produced near the reader. Some types...
Website:
http://www.rfid-pathfinder.org.nz
Handheld RFID Reader - Manufacturers, Suppliers ...
Thinnk Ware #4 Itbi, Jssate-step C-20/1 , Sector - 62 Noida (u.p.) - 201301 [india], Uttar Pradesh , India
http://www.exportersindia.com/kcrobotics/
Rfid Long Range Reader
We offer Rfid Long Range Reader. features: various antenna configurations with reading ranges up to 2 meters buffered read mode, notification mode, scan mode multi-tag reader (iso 15693, iso 18000-3 and epc hf) optional further tag protocols are available interfaces: rs232, rs485, lan, wlan interface compatibility to all obid i- readers obid i- iso host mode also available as reader unit.
Digital Identification Systems
No. 6,...
Website:
exportersindia.com
Related topics : long range active rfid reader / rfid tag reader long range / rfid reader long read range / active rfid tag and reader / active rfid tag reader
Which RFID Frequency is Right for Your Application?
Which RFID Frequency is Right for Your Application?
October 29, 2012
By Shain Armstrong 37 Comments
LF, HF, and UHF
Similar to how a radio must be tuned to different frequencies to hear different channels, RFID tags and readers have to be tuned to the same frequency in order to communicate. There are several different frequencies an RFID system can use. Generally, the most common are
Low...
Website:
blog.atlasrfidstore.com
Radio Frequency Identification (RFID) Frequently Asked ...
What is the Electronic Product Code (EPC)?
Privacy and Data Collection
General RFID Information
What is automatic identification?
Automatic identification, or auto ID for short, is the broad term given to a host of technologies that are used to help machines identify objects. Auto identification is often coupled with automatic data capture. That is, companies want to identify items, capture...
Website:
http://www.aimglobal.org
Related topics : rfid tags and readers cost / cost of rfid readers and tags / radio frequency identification technology (rfid) / rfid tag and reader price / rfid tag and reader circuit
The simplest possible RFID emulator | T4F
The simplest possible RFID emulator
Before reading this section, you should check first " RFID for nerds and hobbyist ".
Keep in mind that this information applys for low frequency RFID. Several changes
When looking for a low frequency RFID emulator for security testing purposes, you can find several designs out there. However, their complexity can make you think twice before building one.
Is...
Website:
http://www.t4f.org
Related topics : low frequency rfid reader / high frequency rfid reader module / rfid tag emulator / low frequency rfid tag / rfid reader read range
2018 most common RFID Questions | RFIDdirect
Furthermore, RFID can allow for multiple tag reads, capable of hundreds of tags in a couple of seconds and the RFID tag information can be re-programmed.
What is the difference between LF, HF and UHF?
LF operates at 125 KHz or 134.2 KHz and at this frequency range the wavelength is not vulnerable to interference and can be used around metallic objects and high water content objects or...
Website:
rfiddirect.eu
Which RFID Frequency is Right for Your Application?
Which RFID Frequency is Right for Your Application?
October 29, 2012
By Shain Armstrong 31 Comments
LF, HF, and UHF
Similar to how a radio must be tuned to different frequencies to hear different channels, RFID tags and readers have to be tuned to the same frequency in order to communicate. There are several different frequencies an RFID system can use. Generally, the most common are
Low...
Website:
blog.atlasrfidstore.com
Related topics : uhf rfid tag antenna design for on body applications / passive uhf rfid tag range / uhf rfid tag antenna mounted on metallic objects / 433 mhz ultra high frequency active rfid tags / uhf rfid tags frequency
RFID Blocking Credit Card & Passport Sleeves - Travel Tips
RFID Blocking Credit Card & Passport Sleeves
Model: 12878
RFID Sleeves for Credit Cards and Passports - Stops "Electronic Pickpocketing"
(2) Full Sized Passport Sleeves
RFID Security Sleeve Features
Blocks RFID frequency from reading your cards or passport.
Prevents high tech "electronic pick-pockets" from obtaining your personal information with special RFID scanners.
Help prevent identity...
Date: 2018-01-12 08:46:10
Website:
https://www.corporatetravelsafety.com
RFID Reader ID-12LA (125 kHz) - Cooking Hacks
RFID (radio-frequency identification) is the wireless non-contact use of radio-frequency electromagnetic fields, for the purposes of identifying and tracking tags attached to objects. This is the ID-12LA, a very simple to use RFID reader module from ID Innovations. With a built in antenna, the only holdup is the 2mm pin spacing. Power the module, hold up a 125kHz card, and get a serial string...
Website:
cooking-hacks.com
Related topics : radio frequency identification tags (rfid) / rfid radio frequency identification tags / radio frequency identification rfid systems / radio frequency identification (rfid) / rfid 125 card reader serial output
Tahoe Designer | HOW TO: Simple Arduino LF RFID Tag Spoofer
This instructable will show how you can use an Arduino and a few simple components (wire coil, transistor, capacitor, resistor) to make a device that can spoof an 125 KHz (low frequency) RFID tag. �This is version 1, so there are many enhancements that can be made, but this version is stupid simple, yet it works. �I did this in a few hours without much previous knowledge of RFID and...
Website:
http://tahoedesigner.com
Definition of RFID Tags - Asset Tag & UID Label Blog
Definition of RFID Tags
RFID tags are a type of tracking system that uses smart barcodes in order to identify items. RFID is short for "radio frequency identification," and as such, RFID tags utilize radio frequency technology. These radio waves transmit data from the tag to a reader, which then transmits the information to an RFID computer program. RFID tags are frequently used for merchandise,...
Website:
https://www.camcode.com
RFID Vs Contactless Smart cards – An unending debate
RFID Vs Contactless Smart cards - An unending debate
Date Published: 4 Oct 2006
By Parul Oswal, Senior Research Analyst, RFID, and Michelle Foong, Senior Research Analyst, Smart Cards, Industrial Technologies Frost & Sullivan Asia Pacific.
The debate between RFID and smart cards technology is an ongoing one. There is no clear definition that describes RFID and smart cards, and at times these two...
Website:
frost.com
Rfid ppt - de.slideshare.net
Keine Notizen für die Folie
Rfid ppt
1. RFID Based Embedded System for Vehicle Tracking and Prevention of Road Accidents 1 Ronson Calvin Fernandes 110919053 Manipal Institute of Technology - Manipal 11/19/2013
2. 2 Contents Introduction What is RFID ? RFID Applications RFID System RFID Tag , RFID Reader , GSM How V.T works ? Design and Implementation Benefits of V.T ...
Website:
de.slideshare.net
A CMOS Pressure Sensor Tag Chip for Passive Wireless ...
This paper presents a novel monolithic pressure sensor tag for passive wireless applications. The proposed pressure sensor tag is based on an ultra-high frequency RFID system. The pressure sensor element is implemented in the 0.18 µm CMOS process and the membrane gap is formed by sacrificial layer release, resulting in a sensitivity of 1.2 fF/kPa within the range from 0 to 600 kPa. A three-stage...
Website:
https://www.ncbi.nlm.nih.gov
Parallax RFID Card Reader (Serial) - Trossen Robotics
Parallax RFID Card Reader (Serial)
Item # PX-28140
There are no reviews yet. | Write a review
Price: $39.99
Reviews (0)
Designed in cooperation with Grand Idea Studio, the Parallax Radio Frequency Identification (RFID) Reader Module is the first low-cost solution to read passive RFID transponder tags. The RFID Reader Module can be used in a wide variety of ...
Website:
http://www.trossenrobotics.com
Related topics : rfid card reader serial parallax / parallax radio frequency identification (rfid) reader module / rfid 125 card reader serial output / rfid card reader serial output / parallax rfid card reader
UHF Long Range Reader - RFID & Wireless IoT
ID ISC.LRU1002 UHF Long Range
ID ISC.LRU1002 UHF Long Range
UHF Long Range Reader
Standard for identification of UHF transponders
With a range of up to 12 m, UHF readers are ideally suited for vehicle access control systems. For this application, the new LRU1002 has not only a battery-based real-time clock, but also an improved Wiegand interface, which makes the reader compatible with common...
Website:
https://www.rfid-wiot-search.com
What is RFID? ( Radio Frequency Identification)| RFID ...
What is RFID?
Look:
Radio Frequency (RF) technology has been around since WWII, when the Allied Forces first used it to identify friendly aircraft. Today this technology is used for mobile phones, toll tags, fuel pump key fobs, animal tracking both wild and domestic as well as many other applications.
We will discuss the use of RF in automatic identification systems, the most rapidly growing...
Website:
https://www.tracknetid.com
RFID Range. What Affects The Distance You Can Expect RFID ...
Let's look at each of these in more detail...
Transmit Power
RFID readers and active RFID tags actively transmit RF energy to carry information from one to the other.
Active tags have a battery, or an external power supply, so have enough power available to allow them to transmit up to the maximum legal power limit.
A passive tag doesn't have a battery. So where does it get the energy to power...
Website:
wireless-technology-advisor.com
RFID Range. What Affects The Distance You Can Expect RFID ...
Let's look at each of these in more detail...
Transmit Power
RFID readers and active RFID tags actively transmit RF energy to carry information from one to the other.
Active tags have a battery, or an external power supply, so have enough power available to allow them to transmit up to the maximum legal power limit.
A passive tag doesn't have a battery. So where does it get the energy to power...
Website:
wireless-technology-advisor.com
Related topics : rfid active reader passive tag / passive rfid tag and reader / active rfid tag and reader / passive rfid tag frequency range / active rfid tag frequency range
Intermec RFID Technology: RFID Frequently Asked Questions
How much do RFID tags cost?
Answer: Tags can cost as little as 10 cents or as much as $100 depending on the type of tag, the application and the volume of the order. Generally speaking, finished smart labels that can be applied to cases and pallets typically cost between 10 and 20 cents, depending upon volume. Active tags - those with a battery - can cost far more.
What are the benefits of RFID...
Website:
http://www.intermec.co.uk
Related topics : difference between passive and active rfid tags technology / rfid passive tag reader cost / rfid active reader passive tag / rfid tag reader system / cost of active and passive rfid tags
RFID - Radio Frequency Identification
RFID, which stands for "Radio Frequency Identification," is a contactless identification technology that supports both low-frequency (125/134.2 kHz) and high-frequency (13.56 MHz) alternating magnetic fields. It consists of an information carrier (RFID tag, card or transponder) and a reading device (RFID reader or scanner). When the fields of one of those elements is within the reach range of the...
Website:
https://www.elatec-rfid.com
SMART CARD RFID SCAN BLOCKING SLEEVES - CANADA & USA
..
ATTN CANADIANS and AMERICANS:
The sleeves shown on some of the videos on this site are the EXACT same sleeves you see here. They are the same as the sleeves we supply to ICBC (see photo) and various police and crime prevention agencies in various states and provinces.
We applaud the efforts our close friends in this industry we collaborate with in bringing the dangers of the RFID technology...
Website:
http://www.chipblockers.com
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Card and RFID Tag Manufacturers,Membership card,Hotel key ...
RFID Cards
RFID stands for radio-frequency identification. RFID cards are used for applications where tracking or identifying personnel is important or where access control is required. Various RFID frequency bands are utilized in cards today, including 125 kHz low frequency proximity, 13.56 MHz high frequency smart card and 860-960 MHz ultra-high frequency (UHF).
Proximity cards and smart cards...
Website:
http://rfidttx.com