sarantel is a world-class manufacturer of miniature...quadrafilar helix design. the sl1200 is ideal...

Sarantel is a world-class manufacturer of miniature

dielectric filtering antennas based on its revolutionary

PowerHelix® technology

Sarantel's revolutionary ceramic filtering antennas offer dramatically improved

performance over existing antenna designs, resulting in a clearer signal, better range

and a 90 per cent reduction in the amount of signal radiation absorbed by the body.

Because of their smaller size and higher capabilities, Sarantel's antennas enable

manufacturers to create innovative wireless products for the GPS, WiMax, Satellite

Radio and Satellite phone markets.

In addition to world-class manufacturing facilities and know-how, Sarantel has

developed an intellectual property portfolio comprising over 30 core patents, with

approximately 300 international fillings, on the design and production of dielectrically

loaded antennas.

Sarantel PLC is headquartered in Wellingborough, England and has sales offices in the

UK and USA

Frequently Asked Questions:

Q1. How does Sarantel's antenna reduce the amount of radio energy absorbed by the human body?

The Sarantel antenna uses patented technology that reduces the near field emissions by over 90% when

compared with existing antenna technology. It accomplishes this by storing the bulk of the near field

energy within the ceramic core of the antenna.

Q2. How can I reduce my system cost?

The Sarantel antenna acts like a band-pass filter and provides very good isolation from other radio

systems that may interfere with the GPS receiver. If your system currently uses a band pass filter

Sarantel’s technology eliminates the need for this component. Sarantel’s antenna may enable the use of a

lower cost, lower specification image reject SAW filter on the front end of the GPS receiver. For

automotive applications Sarantel’s antenna can be embedded with the GPS receiver thus eliminating the

expensive RF cabling, connectors and integration costs associated with today’s embodiments.

Q3. Can Sarantel's antennas be embedded in a device?

Sarantel antennas are particularly well suited to be embedded because they are very predictable and

stable in frequency response. In most cases, Sarantel antennas can be embedded in a device with no

detuning effects whatsoever. Some materials may have a small tuning effect if they are within a few

millimeters of the antenna, however Sarantel’s experienced applications team will work with the

customer to determine the correct packaging for optimum performance.

Q4. What design support is available to integrate the Sarantel antenna?

Sarantel provide clear guidelines on how to integrate and support the antenna in a customer housing to

ensure the product will pass rigorous drop testing.

Q5. Which GPS chipset or module will the Sarantel antenna work with?

The Sarantel antenna will work with any GPS chipset or module and in many cases without the need for

any additional components. Sarantel offers both passive and active antennas depending on the

requirements of the chipset or module RF front-end.

Q6. How does Sarantel's antenna improve the global positioning systems (GPS) reliability?

The Sarantel’s antenna is omni-directional with a very large 3dB beamwidth, allowing it to receive signals

from low elevation satellites which are essential for good positional accuracy. Since the antenna is omni-

directional, it improves the acquisition and maintenance of satellite signals in handheld or mobile devices.

The antenna has good LHCP rejection capability, improving the positional accuracy in the presence of

multi-path signals.

Q7. How do I combine mobile telecommunications, Wireless LAN and GPS into one small device?

Sarantel’s antenna has an integral balun which isolates the antenna from the device ground plane and

allows it to resonate independently. Additionally, the small near field of the antenna enables it to be

installed within millimeters of other antennas without coupling. These are significant advantages because

they directly address both conducted and radiated noise isolation challenges associated with tight

integration.

Q8. If the Government insists that all mobile products must be labeled with SAR (specific absorption

rate) levels, how will it affect me?

The debate by medical experts on emissions affecting health will continue. By designing mobile products

with lower SAR, companies are able to offer their customers a choice. If your application demands a low

SAR antenna solution then Sarantel has the best technology available!

Q9. Could I use the Sarantel antenna in other forms of communication device?

Yes, Sarantel’s engineering teams are happy to discuss use of the technology in various other applications

Which Sarantel Antenna

Is right for my Application?

SL1200 Passive Antenna

Based on patented GeoHelix® technology SL1200 GPS antenna

provides high performance in difficult GPS applications using a

quadrafilar helix design. The SL1200 is ideal for applications

where a device is handheld, body-worn, or otherwise

surrounded by high-dielectric materials that would de-tune

conventional antennas.

Applications: The antenna is ideally suited for GPS enabled

UMPC/MID applications, tracking devices, DSC/SLR cameras for

Geotagging, GPS/GSM mobile devices or and any device which

cannot accommodate a large ground plane for the antenna.

Specifications:

Minimum Typical Maximum Unit

Part Number SL1201 (Embedded) / SL1202 (LF) Each

Type Quadrifilar Helix

Embedded Frequency 1573.42 1575.42 1577.42 MHz

Polarization Right Hand Circular Polarized

Gain -2.8dBic dBic @zenith

Efficiency 27% Total spherical

Efficiency 50% Upper hemisphere

Beamwidth 135 Degrees

Bandwidth(3dB) 20 MHz

Axial Ratio <1.5 @ Zenith

VSWR <2.0:1

Impedance 50 Ω

Operating Temperature -40 +20 +85 °C

Element dimensions 10.1 (diameter) x 17.8 (length) mm

Overall Dimensions (w/sleeve) 12 (dia) x 14 (width) x 22 (length)

Weight (excl sleeve) 7 grams

Radiation Pattern:

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Azimuth Plot

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90 deg

SL1300 (LBS Pro) Passive Antenna

Based on patented GeoHelix® filtering antenna technology the SL1300 is

ideally suited for small, tightly integrated GPS devices with multiple radios that

require high positional accuracy. Unlike other conventional antennas, the

SL1300 achieves uplift in gain once integrated into the customer’s product.

Applications: Portable, Hand Held Products and tightly Integrated GPS devices

including digital cameras, tracking devices, mobile phones, UMPC’s & MID’s.

Specifications:


Part Number SL1300 Each




Integrated Gain -5dBic dBic @zenith




VSWR <2.0:1

Impedance 50 Ω


Element dimensions 7.5(diameter) x 12 (length) mm

Weight 3 grams

Radiation Pattern:

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349 354

Azimuth Plot

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60 deg

90 deg

SL1203 Rugged Passive Antenna

Based on the SL1200 passive antenna, using patented

GeoHelix® technology and enclosed in a waterproof

and dust proof enclosure, the SL1203 rugged passive

antenna provides a complete easy to connect solution

for applications where customers need a high

performing rugged antenna. The SL1203 connects

using a male SMA connector

Applications: Handheld body worn products,

Agency/industrial GPS, Water/dust proof solution

required

Specifications:






Gain -2.8dBic dBic @zenith

Efficiency 27% Total spherical

Efficiency 50% Upper hemisphere




VSWR <2.0:1

Impedance 50 Ω


Element dimensions 10.1 (diameter) x 17.8 (length) mm

Overall Dimensions 14.1 (dia) x 19 (width) x 37 (length)

Weight 14 grams

Mounting SMA Plug

Radiation Pattern:

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141146

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163169174

180186191

197203

208214

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287

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Azimuth Plot

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60 deg

90 deg

SL1204 Active Antenna

Designed for quick integration with the latest GPS modules

and chipsets, the SL1204 provides 18dB of gain through a

single built in amplification stage. The low current

consumption further assists with integration of GPS into

mobile applications.

Applications: Handheld, mobile GPS applications for

customers who require an active antenna

Specifications:




Frequency 1573.42 1575.42 1577.42 MHz


Voltage 2.5 3.0 3.6 V

Current 3.5 4.0 mA

Gain 17 18 dBic @zenith




VSWR <2.0:1 2.3:1

Impedance 50 Ω

Noise Figure 0.8 0.9 dB

Input 3rd

Order Intercept Point

-9 dBm


Overall Dimensions (w/radome) 13 (dia) x 13 (width) x 34 (length) mm

Weight 9 grams

Radiation Pattern:

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2834

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-5

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141146

152158

163169174

180186191

197203

208214

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225

231

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253

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264

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287

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Azimuth Plot

0 deg

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60 deg

90 deg

SL1206 Active Antenna

Original Sarantel active antenna now based on SL1200

GeoHelix® P2 passive antenna, the SL1206 provides up

to 26dB gain, ideal for use with many of the leading GPS

chipsets and modules available on the market. Simple

connection to pcb allow for easy integration into

customer designs

Applications: all applications requiring high level

performance active antenna

Specification:




Frequency 1573.42 1575.42 1577.42 MHz


Voltage 2.0 3.3 3.6 V

Current 13 mA

Gain +24 +25 dBic @zenith




VSWR <2.0:1 2.3:1

Impedance 50 Ω

Noise Figure 1.2 1.3

Input 3rd

Order Intercept Point

0 dBm


Overall Dimensions (w/radome) 13 (dia) x 15 (width) x 44 (length) mm

Weight 10 grams

Mounting SMT

Radiation Pattern:

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5

10

15

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06 11

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28

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62

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84

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112

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129

135

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157163

169174180

-174-169-163

-158

-152

-146

-141

-135

-129

-124

-118

-113

-107

-101

-96

-90

-84

-79

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-68

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-23-17

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Elevation Plot

0

5

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06 11

1723

2834

39

45

51

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62

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73

79

84

90

96

101

107

113

118

124

129

135

141146

152158

163169174

180186191

197203

208214

219

225

231

236

242

248

253

259

264

270

276

281

287

293

298

304

309

315

321326

332338

343349 354

Azimuth Plot

0 deg

30 deg

60 deg

90 deg

Product Integration Information

SL1201 Embedded Application

SL1201 (with sleeve) is shown embedded in to an application

using as IMS connector. Internal ribbing is designed in to the

housing to ensure the unit passes drop testing. Detailed

information on the dimensions of the ribbing and recommended

features in the housing are available in the “Mechanical

integration Guidelines” document.

For optimum antenna performance there should be at least a

2.5mm gap between the antenna and the PCB.

SL1300 Embedded Application

SL1300 is shown embedded in to an application and soldered

directly to the PCB. Internal ribbing and a feature above the

antenna is designed into the housing to ensure the unit passes

drop testing. Detailed information on the dimensions of the

ribbing and recommended features in the housing are available in

the “Mechanical integration Guidelines” document.

For optimum antenna performance there should be a 1.5mm gap

between the antenna and the PCB.

SL1204/SL1206 External Application

SL1204 is shown being used externally in an application. The

antenna PCB is soldered directly to the main PCB. The supplied

radome has a groove in it to enable the housing to provide

mechanical support.

The SL1206 can also be used in this configuration. Detailed

information on the dimensions of the radome, the

recommended housing features and the pad layout can be

found in the SL1204/SL1206 datasheet.

SL1204/SL1206 Embedded Application

SL1206 is shown being used in an embedded application. The

antenna PCB is soldered directly to the main PCB. The antenna

must be used with the supplied sleeve to ensure the antenna

resonates at the correct frequency. Internal ribbing is designed

in to the housing to ensure the unit passes drop testing. Detailed

information on the dimensions of the ribbing and recommended

features in the housing are available in the “Mechanical

integration Guidelines” document.

For optimum antenna performance there should be at least a

10mm gap between the antenna and the PCB.

2.5 mm

1.5 mm

10 mm

Check out www.sarantel.com for

- Latest product information and releases

- Up to date datasheets and integration guidelines for each product

- Application information

- Access to Sarantel application engineers

- Sales enquiries

- Sample ordering

Contact Sarantel

Sarantel Limited Phone: +44 (0) 1933 670560

Unit 2 Wendel Point Fax: +44 (0) 1933 401155

Ryle Drive E-mail: [email protected]

Park Farm South Website: www.sarantel.com

Wellingborough NN8 6BA

United Kingdom

For details of where to buy, distributors and representative partners please

check www.sarantel.com/wheretobuy

Sarantel strongly believes in the value of intellectual property and the right of

entrepreneurs to protect what they have created. Sarantel demonstrates its

commitment to this principle by continuously developing its technology and then filing

patents in a number of regions around the world. Additionally, Sarantel is constantly

filing new patent applications and has a substantial portfolio of pending applications.

An up to date list of Sarantel patents can be found at

www.sarantel.com/downloads/statements/Sarantel_Patents.pdf

Document No. SL000050100 Version 1.0 22nd

April 2009

Distributor/Representative Information

sarantel is a world-class manufacturer of miniature...quadrafilar helix design. the sl1200 is ideal...

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