1、 TIA-329.2-C-2008 APPROVED: MARCH 8, 2008 REAFFIRMED: APRIL 23, 2013 TIA-329.2-C (Revision of TIA-329-B) March 2008Minimum Standards for Communications Antennas, Vehicular Antennas NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunde
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6、oject No. 3-4606.2-RV3-RF1, formulated under the cognizance of the TIA TR-8 Mobile and Personal Private Radio Standards, TR-8.11 Subcommittee on Antenna Systems). Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION Standards and Technology Department 1320 N. Courthouse Road Arlington, VA 22201 U.S.
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22、E CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. Table of Contents FOREWORD. v INTELLECTUAL PROPERTY RIGHTS vii INTRODUCTION . viii 1. SCOPE. 1 2. OBJECTIVE . 1 3. STANDARD REFERENCES AND TEST CONDITIONS . 2 3.1. Standard Impedance 2 3.2. Bandwidth . 2 3.
23、3. Instantaneous Bandwidth . 2 3.4. Polarization . 2 3.5. Standard Test Automobile 2 3.6. Mobile Reference Antenna . 3 3.7. Half-Wave Dipole 4 3.8. Standard Gain Unit . 4 3.9. Site . 4 3.9.1 Source Antenna 4 3.9.2 Effective Antenna Volume . 4 3.9.2 Ambient Conditions . 4 3.10 Antenna Power Gain 4 4.
24、 ELECTRICAL STANDARDS . 5 4.1. STANDING WAVE RATIO (VSWR) . 5 4.1.1. Definition . 5 4.1.2. Test Conditions . 5 4.1.3. Method of Measurement 5 4.1.4. Presentation of Results . 5 4.2 RADIATION PATTERNS 5 4.2.1 Definition . 5 4.2.2 Presentation of Results . 5 4.2.3 Test Conditions . 6 4.2.4 Method of M
25、easurement . 6 4.3 RELATIVE ANTENNA POWER GAIN 6 4.3.1 Definition . 6 4.3.2 Test Conditions . 7 4.3.3 Method of Measurement . 7 4.3.4 Presentation of Results . 7 4.4 ANTENNA POWER RATING . 8 4.4.1 Definition . 8 4.4.2. Method of Measurement 8 4.4.3 Test Conditions . 8 4.4.4 Presentation of Results .
26、 8 5. MECHANICAL STANDARDS 9 TIA-329.2-C 5.1 SHOCK STABILITY 9 5.1.1 Definition . 9 5.1.2 Method of Determination . 9 5.1.3 Test Apparatus Technical Parameters 10 5.2 VIBRATION STABILITY . 11 5.2.1 Definition . 11 5.2.2 Method of Determination . 11 5.3 GALVANIC CORROSION 12 5.3.1 Definition . 12 5.3
27、.2 Recommended Practice 12 5.4 RESISTANCE TO WEATHERING. FATIGUE AND COLD FLOW . 12 5.4.1 Definition . 12 5.4.2 Recommended Practice 12 6. MINIMUM STANDARDS 13 6.1. STANDING WAVE RATIO (VSWR) (Reference Clause 4.1) 13 6.2 RELATIVE ANTENNA POWER GAIN (Reference Clause 4.3) 13 6.3 ANTENNA POWER RATING
28、 (Reference Clause 4.4) 13 6.4 SHOCK STABILITY (Reference Clause 5.1) 13 6.5 VIBRATION STABILITY (Reference Clause 5.2) . 13 Annex A (Informative) - BIBLIOGRAPHY 15 Annex B (Informative) - Galvanic Couples . 17 FOREWORD (This foreword is not part of this Standard.) This Standard was prepared by TIA
29、Working Group WG-8.11.4 and has been approved by Subcommittee TR-8.11. Members of TR-45 have also reviewed and made comments on this document as it impacts antenna usage in the Wireless Industry. Annex A and Annex B are for information only. TIA-329.2-C INTELLECTUAL PROPERTY RIGHTS NOTE: The users a
30、ttention is called to the possibility that compliance with this Standard may require use of an invention covered by patent rights. By publication of this Standard, no position is taken with respect to the scope or validity of such patent claims or of any patent rights in connection therewith. INTROD
31、UCTION This standard replaces TR-329-A Part II MINIMUM STANDARDS FOR COMMUNICATIONS ANTENNAS, MOBILE ANTENNAS. One primary reason for changing this standard is that the Subcommittee Working Group Four could find no manufacturer who had used the standard in the time since its last revision. This appe
32、ared to be caused by a half wavelength “Standard Dipole” that was not convenient to use and results using it that were excessively difficult (if not impossible) to make accurately. In their investigation of the existing standard, the Working Group also found that there are mistakes in the characteri
33、zation of the gain of this “Standard Dipole” in ANNEX B of that standard The mistakes were very serious, reaching a maximum in excess of 24 dB in the STANDARD GAIN at 27.5 MHz1. There are two principal differences between this and the predecessor standard. The first is the change from using a half w
34、avelength “Standard Dipole” in the measurement of the gain of a mobile test antenna to the use of a quarter wavelength monopole mounted on a typical vehicle. The second is the expansion of the frequency range to include the 220 MHz band, lowering the 450 MHz band from a low of 400 MHz to 380 MHz, an
35、d lowering the 800/900 MHz band from 800 MHz to 740 MHz. 1The frequency, and quoted/corrected standard gain for tabulated values in the predecessor standard are 25.0 -3.74/-23.78, 27.5 -0.54/-24.88, 30.0 -0.64/-23.09, 32.5 -2.44/-21.39, 35.0 -4.04/-19.76, 35.0 -4.74/-7.49, 960.0 -1.44/-0.77. All oth
36、er tabulated values have been found to be correct within 0.1 dB. TIA-329.2-C BLANK PAGEMinimum Standards for Communications Antennas Part II: Vehicular Antennas 1. SCOPE The test conditions, and methods of measurement of vehicular antennas in the Land-Mobile Services are presented for establishing c
37、onformance to the performance requirements. The supplementary terms and definitions and the conditions of measurement set forth in this standard are intended for typical tests and may be used also for acceptance tests. This Standard deals only with antennas intended for use in the Terrestrial Land M
38、obile bands between 25 MHz and 1000 MHz and does not deal with antennas intended for use in military combat applications. For the purpose of this standard, an antenna is defined as a device for coupling a transmission line to space for the purpose of radiating or receiving electromagnetic waves. It
39、includes any matching, balancing, phasing or other coupling devices up to the point of connection of the transmission line. Vehicular antennas are electromagnetic radiators, or combinations thereof in arrays, used for the mobile communication services at the vehicular station. 2. OBJECTIVE The objec
40、tive of this Standard is to define terms and conditions of measurement used to ascertain the performance of antennas within the scope of this standard and to make possible a comparison of the results of measurements made by different observers on different equipment. Terminology used generally confo
41、rms to that in IEC or IEEE publications 12 on antennas. Other definitions will be found in Section 3 of this Standard. TIA-329.2-C 3. STANDARD REFERENCES AND TEST CONDITIONS Standard references and test conditions are those which shall apply to an antenna while it is being tested. These conditions a
42、pply unless otherwise specified. 3.1. Standard Impedance The characteristic impedance of the transmission line connecting test equipment to the test antenna shall be 50 ohms 5%. The nominal input and output impedance of all test equipment shall be 50 ohms. 3.2. Bandwidth The bandwidth of the antenna
43、 is the frequency range over which the antenna shall perform and meet all of its stated specifications. 3.3. Instantaneous Bandwidth The instantaneous bandwidth is the frequency range over which the antenna shall perform without any whip length changes or other adjustments and still meet its stated
44、specifications. 3.4. Polarization The polarization of an antenna is the orientation of the electric vector of the wave radiated by the antenna.2 3.5. Standard Test Automobile Any vehicle can be used to make tests of mobile antennas and meet this standard including trucks, motorcycles and passenger c
45、ars. However, when the vehicle does not meet the criteria described below, full disclosure of the make and model of vehicle must be made. Standard equipment is assumed, but any options must be disclosed. The standard Test Automobile shall be a late model sedan in running order. The exact age is unim
46、portant as long as the physical dimensions fall within the range described below. The roof dimensions shall be determined as shown in Table 1 and Figure 1. The height of the rooftop is from the ground beneath the vehicle to the height of the center of the roof, and may be “adjusted” to meet this req
47、uirement by placing the vehicles tires on elevated supports or letting air out of the tires if necessary. 2The electric vector magnitude varies as a function of rotation angle. For linear polarization it is suggested that the ratio of the maximum to minimum electric vector be greater than 20 dB. TIA
48、-329.2-C Table 1 Vehicle Roof Dimensions Value SI Units English Units L W = 1.807 m2 to 2.061 m2 2801 in2 to 3195 in2 L W = 1.108:1 to 1.578:1 Height AGL 1.3 m to 1.5 m 51.18 in to 59.06 in Figure 1 - Measurement dimensions of the vehicle rooftop 3.6. Mobile Reference Antenna The Mobile Standard Ref
49、erence antenna shall be a lossless matched quarter wavelength monopole mounted within 5 cm (2 in) of the center of the rooftop of the Standard Test Automobile. Matched shall mean no greater than 1.5:1 VSWR. The whip material shall have a resistivity no greater than 6.0 10-6 ohm-cm or be plated with such a metal. The diameter of the whip shall be no less than 1.2 mm (3/64 in). Other components may be of any material, but the total loss of the mount shall be no more than 0.1 dB. The total height above the mounting surface shall be that of a resonant quarter-wavelen
