Seibersdorf Laboratories POD 16 Manual
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Seibersdorf Laboratories POD 16 Manual

Antenna stand for site vswr measurments
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Antenna POD 16
Antenna POD 618
Antenna Stand for
Site VSWR Measurements
MANUAL
POD - Precision Omnidirectional Dipole

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Summary of Contents for Seibersdorf Laboratories POD 16

  • Page 1 Antenna POD 16 Antenna POD 618 Antenna Stand for Site VSWR Measurements MANUAL POD - Precision Omnidirectional Dipole...
  • Page 3 E M C & O P T I C S MANUAL POD – Precision Omnidirectional Dipole Antenna POD 16 Antenna POD 618 Site VSWR Positioner SPM1 (manual) Site VSWR Positioner SPA1 (automatic) 14.02.2011 Version 3.1...
  • Page 4 Seibersdorf Labor GmbH EMC & Optics – RF-Engineering T +43(0) 50550-2882 | F +43(0) 50550-2881 rf@seibersdorf-laboratories.at www.seibersdorf-laboratories.at/rf VAT no.: ATU64767504, Company no. 319187v, DVR no. 4000728 Bank account: Erste Bank, sort code 20111, account no. 291-140-380-00 | POD MANUAL SEIBERSDORF LABORATORIES...

  • Page 5: Table Of Contents

    TECHNICAL SPECIFICATIONS ...................... 13 4.1. Technical Specifications of POD Antennas ..................13 4.2. Radiation Pattern ..........................16 4.2.1. Radiation Pattern POD 16 ........................ 17 4.2.2. Radiation Pattern POD 618 ......................19 4.3. Technical Specifications of Site VSWR Positioner ................24 INSTALLATION ..........................26 5.1.
  • Page 6 | POD MANUAL SEIBERSDORF LABORATORIES...

  • Page 7: Introduction

    1. INTRODUCTION The Precision Omnidirectional Dipole (POD) was developed by Seibersdorf Laboratories (former ARC) due to industry demand for an omnidirectional broadband antenna. It’s covering the frequency range 1-18 GHz with two antennas (1-6 GHz, 6-18 GHz). Design goal was a superior radiation pattern performance exceeding the standard requirements for Site VSWR measurements [1] by far.

  • Page 8: Description Of The Pod Antenna & Positioner

    2.1. POD Antenna The POD Antennas cover the frequency range 1 GHz up to 18 GHz with two models: POD 16 for the range 1 GHz to 6 GHz and POD 618 for the range 6 GHz to 18 GHz.
  • Page 9 Figure 2: The pattern of the POD Antenna is very similar to the ideal dipole. Normalized E- and H-plane radiation pattern results for a POD 16 at 4 GHz and forbidden Figure 3: areas (gray) defined by the standard for Site VSWR measurement...

  • Page 10: Site Vswr Positioner

    CISPR 16-1-4 (8.2.2.1): “Note: Guidance provided by the antenna manufacturer on the routing of the feed cabling and antenna mast should be followed, if available, to minimize the possible influence on H-plane pattern outside of ±135°" | POD MANUAL SEIBERSDORF LABORATORIES...

  • Page 11: Content Of Sets

    3.1. POD Antenna Set The components of this set are shown in Figure 6. It consists of the antennas POD 16 and POD 618, ÖKD antenna calibration certificates for each antenna and this manual, packed in a blue transportation case.

  • Page 12: Components Specific To Spa1

    RS232 Cable LWL - RS232 Converter (optional) Components of SPA1 automatic Site VSWR Positioner Figure 7: 3.3. Components Specific to SPM1 Base Plate Tube Base Ruler Components of SPM1 manual Site VSWR Positioner Figure 8: | POD MANUAL SEIBERSDORF LABORATORIES...

  • Page 13: Components For Spm1 And Spa1

    Figure 10: Site VSWR Set with SPM1 manual Site VSWR Positioner 4 x M10 x 50 hexagon socket for mounting the Tube Base 1 x Allen key, 6 mm different length and amount, depending on the test volume height POD MANUAL | SEIBERSDORF LABORATORIES...

  • Page 14: Site Vswr Set With Spa1

    POD Antenna Set LWL cable with converter Brackets and Positioner with Ruler below Flight Case Tube Base HV-Connector Tube Connector Power Supply Tubes POD Holder Figure 11: Site VSWR Set with SPM1 manual Site VSWR Positioner | POD MANUAL SEIBERSDORF LABORATORIES...

  • Page 15: Technical Specifications

    4. TECHNICAL SPECIFICATIONS 4.1. Technical Specifications of POD Antennas Specification POD 16 POD 618 Frequency range 1 - 6 GHz 6 - 18 GHz H-Plane anisotropy ± 0.5 dB ± 0.8 dB Typical antenna factor 37 - 49 dB/m 49 - 59 dB/m Typical VSWR <...
  • Page 16 Figure 12: Typical Calibration data for POD 16 a) Antenna factor measured in 0° direction b) VSWR Frequency [GHz] Antenna Factor [dB/m] 38.9 40.1 43.6 45.7 47.5 49.0 VSWR [1] Typical antenna factor and VSWR for POD 16 Table 2:...
  • Page 17 Antenna factor measured in 0° direction b) VSWR Frequency [GHz] Antenna Factor [dB/m] 49.8 50.8 51.7 52.6 53.1 53.9 54.4 55.2 56.2 56.6 57.3 57.9 58.8 VSWR [1] Typical antenna factor and VSWR for POD 618 Table 3: POD MANUAL | SEIBERSDORF LABORATORIES...

  • Page 18: Radiation Pattern

    The pattern is normalized to the largest value (0 dB)  H-plane: The mean value of the pattern is calculated in an angular range from -135° to +135°. The full pattern (angular range ±180 °) is normalized to this average (0 dB). | POD MANUAL SEIBERSDORF LABORATORIES...

  • Page 19: Radiation Pattern Pod 16

    4.2.1. Radiation Pattern POD 16 E-Plane H-Plane POD MANUAL | SEIBERSDORF LABORATORIES...
  • Page 20 Radiation Pattern POD 16 continued: E-Plane H-Plane Figure 15: Radiation Pattern POD 16 | POD MANUAL SEIBERSDORF LABORATORIES...

  • Page 21: Radiation Pattern Pod 618

    4.2.2. Radiation Pattern POD 618 E-Plane H-Plane POD MANUAL | SEIBERSDORF LABORATORIES...
  • Page 22 Radiation Pattern POD 618 continued: E-Plane H-Plane | POD MANUAL SEIBERSDORF LABORATORIES...
  • Page 23 Radiation Pattern POD 618 continued: E-Plane H-Plane POD MANUAL | SEIBERSDORF LABORATORIES...
  • Page 24 Radiation Pattern POD 618 continued: E-Plane H-Plane | POD MANUAL SEIBERSDORF LABORATORIES...
  • Page 25 Radiation Pattern POD 618 continued: E-Plane H-Plane Figure 16: Radiation Pattern POD 618 POD MANUAL | SEIBERSDORF LABORATORIES...

  • Page 26: Technical Specifications Of Site Vswr Positioner

    131 x 54 x 31.5 cm Weight of Site VSWR Set (including POD Antenna Set) 37 kg 37 kg Specifications of Site VSWR Positioners Table 4: Exact weight depending on the length and number of the Tubes. | POD MANUAL SEIBERSDORF LABORATORIES...
  • Page 27 The length of the Tubes and the Tube Connector if necessary are h – 55 cm and h – 55 cm. These calculations are valid for floor-standing equipment, where the Base Plate stands on the bottom of the test volume. POD MANUAL | SEIBERSDORF LABORATORIES...

  • Page 28: Installation

    2 black screws of the Tube Base by hand. Stick the HV-Connector on Tube A (Probably you have to use your thumbs to stretch the bracket a bit) – but do NOT fasten the screws. | POD MANUAL SEIBERSDORF LABORATORIES...
  • Page 29 Fix this position with the plastic screw of the POD Holder. Align the handle of the POD Antenna in parallel with the long side of the Base Plate and fasten the screw on the HV-Connector. Towards receive antenna POD MANUAL | SEIBERSDORF LABORATORIES...
  • Page 30 Connect the RF cable (SMA connector) to the antenna. Use a torque wrench to tighten the connector-nut Ready for the measurement. How to use the Ruler see Chapter 6.1 Towards receive antenna Maximal 0.9 Nm (8 lb-in) | POD MANUAL SEIBERSDORF LABORATORIES...

  • Page 31: Assembly Of Spa1 - Automatic Site Vswr Positioner

    Mount the 2 Brackets with 2 screws each to the Positioner There is only one way of mounting the Brackets: Correct:  Impossible  Mount the Ruler so that the sticker “To RX-Antenna >” on the Ruler points towards the receive antenna. POD MANUAL | SEIBERSDORF LABORATORIES...
  • Page 32 POD Holder as far as possible into the HV- Connector front hole. Align the POD Holder to be parallel wit the Bracket and fasten the screw on the HV-Connector to fix it on the Tube A. | POD MANUAL SEIBERSDORF LABORATORIES...
  • Page 33 Stay away from all moving parts to avoid injury! You must not use the positioner whenever one of the foam stoppers at the end positions is missing – it can cause injury and damage to the SPA1! Maximal 0.9 Nm (8 lb-in) POD MANUAL | SEIBERSDORF LABORATORIES...
  • Page 34 Align the inner edge of the Ruler along the line connecting the 6 test points and adjust the SPA1 so that the marks on the ruler fit to the test points Towards receive antenna Ready for the measurement! | POD MANUAL SEIBERSDORF LABORATORIES...

  • Page 35: Polarization Change

    HV-Connector (with the POD still mounted) from Tube A. Screw the Tube Connector into Tube A Screw Tube B onto the Tube Connector Stick the HV-Connector on Tube B, align the antenna and fasten the screw. POD MANUAL | SEIBERSDORF LABORATORIES...

  • Page 36: Spa1 Maintainance

    The SPA1 must be in the “HOME POSITION” for packing in the flight case: After the last measurement make sure to move the SPA1 to the home position with your measurement software if you intend to pack it back into the flight case. | POD MANUAL SEIBERSDORF LABORATORIES...

  • Page 37: Software

    6. SOFTWARE For operating SPA1 a positioning software is required. Seibersdorf Laboratories provides 3 possibilities: 1) CalStan (optional) for performing the whole measurement 2) VSWR Positioner Tester (enclosed) for simple movement of SPA1 3) DLL (upon request) for implementing the SPA control in customer specific applications...
  • Page 38 If “Wait till position reached” check box is set, the user interface is blocked till the positioner moving is finished. 5. Clicking the deinit button the positioner is deinitialized. | POD MANUAL SEIBERSDORF LABORATORIES...

  • Page 39: Operation

    To help the user to place the Site VSWR Positioner SPM1 correctly a Ruler is included in the Base Plate. On the Ruler the designation of the position P1 to P6 are marked as well as the distances to P6 in cm. POD MANUAL | SEIBERSDORF LABORATORIES...
  • Page 40 For Site VSWR measurements the dynamic range of the instrumentation is an important issue. The received signal should be kept at least 20 dB over the noise floor. Especially in the frequency range 6 to 18 GHz this can cause some difficulties. | POD MANUAL SEIBERSDORF LABORATORIES...

  • Page 41: Field Strength Measurements

    When a preamplifier is used, the gain has to be subtracted. 7.3. Add3D Field Strength Measurements Using sPOD Antennas The Add3D method developed by Seibersdorf Laboratories is based on broadband antennas with a dipole- like radiation pattern and frequency selective voltage measurements performed in three orthogonal directions [6].
  • Page 42 Marker label) in any way. However they could be used to reproduce an antenna position exactly and they are used to define the angles of E- and H-planes as indicated in the manual (e.g. necessary for the calibration of sPOD antennas). Including rotator for Add3D measurements | POD MANUAL SEIBERSDORF LABORATORIES...
  • Page 43  Fix the antenna with the metal part of the holder and  Connect the RF-cable to the antenna.  Finally mount the holder with the sPOD antenna at the rotator using the small metal screw. POD MANUAL | SEIBERSDORF LABORATORIES...

  • Page 44: Literature And Information

    Wolfgang Müllner, Georg Neubauer, Harald Haider: “Add3D, a new technique for precise power flux density measurements at mobile communications base stations" Presentation, 8. Internationale Fachmesse und Kongress für Elektromagnetische Verträglichkeit, 22 – 24 Februar 2000, Düsseldorf | POD MANUAL SEIBERSDORF LABORATORIES...

  • Page 45: Figures

    Radiation pattern (yellow) for different dipole antenna designs (black) in E- and H-Plane..7 Figure 3: Normalized E- and H-plane radiation pattern results for a POD 16 at 4 GHz and forbidden ..7 Figure 4: Site VSWR Positioner ........................8 Figure 5: Available sets for Site-VSWR evaluation ..................

  • Page 46: Tables

    TABLES Table 1: Technical specifications of POD Antennas ................13 Table 2: Typical antenna factor and VSWR for POD 16 ................14 Table 3: Typical antenna factor and VSWR for POD 618 ................ 15 Table 4: Specifications of Site VSWR Positioners ................... 24 Table 5: Technical specification of sPOD antennas ................

  • Page 47: Annex I. Warranty

    Seibersdorf Labor GmbH, hereinafter referred to as the Seller, warrants that standard Seibersdorf Laboratories products are free from defect in materials and workmanship for a period of two (2) years from the date of shipment. Standard Seibersdorf Laboratories products include the following:  Antennas  Cables ...

  • Page 48: Annex Ii

    ANNEX II. Sample Certificate of Antenna Calibration A sample ÖKD 13 certificate for the POD 16 is given on the following pages. It contains the calibration of antenna factor, VSWR and radiation pattern. | POD MANUAL SEIBERSDORF LABORATORIES...
  • Page 49 Kalibrierscheinen und Mitglied der International Laboratory Accreditation Cooperation (ILAC). Manufacturer Die Kalibrierung erfolgt auf der gesetzlichen Grundlage der §§ 58 und 59 des Maß- und POD 16 Eichgesetzes BGBL. Nr. 152/1950 in gültiger Fassung. Type Dieser Kalibrierschein dokumentiert die Rückführ-...
  • Page 50 EH-A xx/09 ÖKD 13 1.7.2009 Measurement Procedures: The Antenna Factor is determined in the 0° orientation using the 3 Antenna Method. The calibration distance is 1.5 m within the fully environment. The VSWR (Voltage Standing Wave Ratio) is measured with a network analyser within the anechoic environment.
  • Page 51 EH-A xx/09 ÖKD 13 1.7.2009 Dates Date of calibration: 1.7.2009 Date of completion: 1.7.2009 Environmental Conditions Test Site Temperature 21 °C Test Site Humidity 30 % Control Room Temperature 22 °C Control Room Humidity 32 % Results The results are given in the following tables and figures. In the Radiation Pattern diagrams the performance criteria given by the standard [1] are also shown and met for all frequencies and polarisations.
  • Page 52 EH-A xx/09 ÖKD 13 1.7.2009 E-Plane H-Plane Page 4 of 5...
  • Page 53 EH-A xx/09 ÖKD 13 1.7.2009 E-Plane H-Plane Page 5 of 5...
  • Page 56 CONTACT Seibersdorf Labor GmbH RF Engineering 2444 Seibersdorf, Austria www.seibersdorf-laboratories.at/rf Fax: +43 (0) 50550 - 2881...

This manual is also suitable for:

Pod 618

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