Model 3100 Series Conical Log Spiral Antennas User Manual
ETS-Lindgren Inc. reserves the right to make changes to any product described herein in order to improve function, design, or for any other reason. Nothing contained herein shall constitute ETS-Lindgren Inc. assuming any liability whatsoever arising out of the application or use of any product or circuit described herein. ETS-Lindgren Inc. does not convey any license under its patent rights or the rights of others. © Copyright 2002–2013 by ETS-Lindgren Inc. All Rights Reserved.
Table of Contents Notes, Cautions, and Warnings ................................................ v 1.0 Introduction .......................................................................... 7 Standard Configuration ............................................................................... 7 Optional Items ............................................................................................ 8 Right-Hand Circular Polarization .........................................................
Model 3102 Gain .............................................................................. 24 Model 3102 VSWR ........................................................................... 25 Model 3102 Forward Power – 1 Meter .............................................. 25 Model 3103 ............................................................................................... 26 Model 3103 Antenna Factor .............................................................. 26 Model 3103 Gain ................
Notes, Cautions, and Warnings Note: Denotes helpful information intended to provide tips for better use of the product. Caution: Denotes a hazard. Failure to follow instructions could result in minor personal injury and/or property damage. Included text gives proper procedures. Warning: Denotes a hazard. Failure to follow instructions could result in SEVERE personal injury and/or property damage. Included text gives proper procedures.
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1.0 Introduction The ETS-Lindgren Model 3100 Series Conical Log Spiral antennas are circularly polarized broadband antennas covering the frequency range of 100 MHz to 10 GHz. This family of antennas includes the Model 3101, Model 3102, and the Model 3103. The Conical Log Spiral antennas are designed specifically for EMI measurements and compliance testing as called for in various Military Standards.
Optional Items RIGHT-HAND CIRCULAR POLARIZATION This option reverses the antenna windings for right-hand polarization. See Circular Polarization on page 19. TRIPOD OPTIONS ETS-Lindgren offers the following nonmetallic, non-reflective tripods for use at both indoor and outdoor EMC test sites. 4-TR Tripod—Constructed of linen phenolic and delrin, designed with an adjustable center post for precise height adjustments. Maximum height is 2.0 m (80.0 in), and minimum height is 94 cm (37.0 in).
7-TR Tripod—Constructed of PVC and fiberglass components, providing increased stability for physically large antennas. The unique design allows for quick assembly, disassembly, and convenient storage. Allows several different configurations, including options for manual or pneumatic polarization. Quick height adjustment and locking wheels provide ease of use during testing. Maximum height is 2.17 m (85.8 in), with a minimum height of 0.8 m (31.8 in). This tripod can support a 13.5 kg (30 lb) load.
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2.0 Maintenance Before performing any maintenance, follow the safety information in the ETS-Lindgren Product Information Bulletin included with your shipment. WARRANTY Maintenance of the Conical Log Spiral antennas is limited to external components such as cables or connectors. If you have any questions concerning maintenance, contact ETS-Lindgren Customer Service. Maintenance Recommendations If the Conical Log Spiral antennas are used outdoors, periodically check them for water accumulation.
Replacement and Optional Parts Following are the part numbers for ordering replacement and optional parts for the Model 3100 Series Conical Log Spiral antennas.
3.0 Specifications Electrical Specifications Model 3101 Model 3102 Model 3103 Frequency Range: 200 MHz–1 GHz 1 GHz–10 GHz 100 MHz–1 GHz Impedance: 50 Ω 50 Ω 50 Ω VSWR (Avg): 2.4:1 1.6:1 1.9:1 Maximum Continuous Power: 100 Watts 50 Watts 100 Watts Short-Term Peak Power: 150 watts 100 Watts 150 Watts Polarization: Circular Connector: Type N female Physical Specifications Model 3101 Length: Diameter: Weight: Model 3102 Model 3103 81.3 cm 38.1 cm 102.0 cm 32.0 in 15.0 in 40.
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4.0 Mounting Instructions Before connecting any components, follow the safety information in the ETS-Lindgren Product Information Bulletin included with your shipment. Do not mount the Model 3100 Series Conical Log Spiral antennas onto a 2x2 boom.
MODEL 3101 To use the included adapters to mount the Model 3101 to a 4-TR Tripod, a 7-TR Tripod, or a mast: Do not cross thread any connections or permanent could occur. 1. Thread the support rod into the support base. 2. Thread the other end of the support rod into the mounting block on the antenna. 3. Attach the support base to the 4-TR, 7-TR, or mast. 16 Mounting Instructions www.ets-lindgren.
MODEL 3102 To use the included adapters to mount the Model 3101 to a 4-TR Tripod, a 7-TR Tripod, or a mast: Do not cross thread any connections or permanent could occur. 1. Align the through holes on the support rod with the back plate of the antenna. 2. Insert the mounting screws (included) into the through holes and back plate. Tighten to secure the rod into place. Do not over tighten. 3. Attach the support base to the 4-TR, 7-TR, or mast. www.ets-lindgren.
MODEL 3103 To use the included adapters to mount the Model 3101 to a 4-TR Tripod, a 7-TR Tripod, or a mast: Do not cross thread any connections or permanent could occur. 1. Thread the support rod into the support base. 2. Thread the other end of the support rod into the mounting block on the antenna. 3. Attach the support base to the 4-TR, 7-TR, or mast. 18 Mounting Instructions www.ets-lindgren.
5.0 Circular Polarization Left-Hand Circular Polarization www.ets-lindgren.
Right-Hand Circular Polarization 20 Circular Polarization www.ets-lindgren.
6.0 Typical Data Typical data measurements taken at one-meter spacing. Model 3101 MODEL 3101 ANTENNA FACTOR www.ets-lindgren.
MODEL 3101 GAIN MODEL 3101 VSWR 22 Typical Data www.ets-lindgren.
MODEL 3101 FORWARD POWER – 1 METER www.ets-lindgren.
Model 3102 MODEL 3102 ANTENNA FACTOR MODEL 3102 GAIN 24 Typical Data www.ets-lindgren.
MODEL 3102 VSWR MODEL 3102 FORWARD POWER – 1 METER www.ets-lindgren.
Model 3103 MODEL 3103 ANTENNA FACTOR MODEL 3103 GAIN 26 Typical Data www.ets-lindgren.
MODEL 3103 VSWR MODEL 3103 FORWARD POWER – 1 METER www.ets-lindgren.
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Appendix A: Warranty See the Product Information Bulletin included with your shipment for the complete ETS-Lindgren warranty for your Conical Log Spiral antennas. DURATION OF WARRANTIES FOR CONICAL LOG SPIRAL ANTENNAS All product warranties, except the warranty of title, and all remedies for warranty failures are limited to two years. Product Warranted Duration of Warranty Period Model 3100 Series Conical Log Spiral Antennas 2 Years www.ets-lindgren.
