ANNEX TO RESOLUTION No. 372 DATED MAY 19, 2004 CERTIFICATION AND HOMOLOGATION STANDARD FOR SECTORIAL AND OMNI- DIRECTIONAL ANTENNAS

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1 ANNEX TO RESOLUTION No. 372 DATED MAY 19, 2004 CERTIFICATION AND HOMOLOGATION STANDARD FOR SECTORIAL AND OMNI- DIRECTIONAL ANTENNAS 1. Objective This standard sets forth the general and specific technical requirements to be demonstrated at the compliance evaluation of sectorial and omni-directional antennas, for the purposes of certification and homologation with the Brazilian Telecommunications Agency. 2. Scope This standard is applicable to sectorial and omni-directional antennas, for operation in point-multipoint systems of the ground fixed and mobile services for all frequency bands allocated to such services, according to the Assignment, Destination and Distribution Plan of Frequency Bands in Brazil issued by ANATEL. 3. Reference The following references are adopted for this standard: I - Assignment, Destination and Distribution Plan of Frequency Bands in Brazil, issued by ANATEL; II - Telecommunications Products Certification and Homologation Regulation, issued by ANATEL. 4. Definitions For the purposes of this standard, the following definitions are applicable: I - Antenna: device designed to, in telecommunications systems, radiate or capture electromagnetic waves in space. It can include any circuit to which it is mechanically incorporated; II - Isotropic antenna: hypothetical antenna whose radiation intensity is uniform for all special directions; III Omni-directional Antenna: an antenna presenting an essentially non-directive horizontal radiation diagram, and a directive vertical radiation diagram; IV Sectorial Antenna: an antenna possessing a directive vertical radiation diagram and a horizontal radiation diagram formatted so as to cover a given angular region within pre-established radiation levels; V - Radiation diagram: diagram representing the radiated power density of the antenna in a certain plane, at a constant distance from the antenna, against an angle measured from a reference direction, for a certain polarization of the electric field. The radiation diagrams are described in view of the spherical coordinates system; VI - Co-polar polarization radiation diagram: radiation diagram for co-polar polarization of the electric field; VII - Cross polarization radiation diagram: radiation diagram for cross polarization of the electric field; VIII - Antenna axis: reference direction of 0º, defined by the manufacturer and taken as the point of origin to measure angles in radiation diagrams; IX - Radiation diagram envelope: curve according to which the radiation diagram will have lower or equal values for any radiation angle; X - Antenna family: a series of antenna models from one same manufacturer, of the same class, with the same beam width on horizontal plane, the same polarization, the same frequency bands, and with constituent elements of the same nature; XI - Gain: ratio between the radiation intensity in a certain direction and the radiation intensity of an isotropic antenna for the same potency operating at the input of both antennas. When not specified otherwise, the gain refers to the direction of the antenna axis; XII - Minimum gain: lowest value of the gain in the direction of the axis, within the operating frequency band of the antenna; XIII - Radiation intensity: potency radiated by solid angle unit, in a certain direction; XIV - Beam width: angular range within which the co-polar polarization radiation diagram presents values higher or equal to -3dB in comparison to the antenna axis;

2 XV - Polarization of an antenna: polarization of the electric field which contains most of the radiated energy in the antenna axis direction; XVI - Co-polar polarization: to the axis direction, it is the polarization identical to the antenna polarization; to other directions, it is the polarization of the electric field received through measurement of the radiation diagram, keeping unchanged the polarization of the transmitter antenna during measurement of the diagram; XVII - Cross polarization: for linear polarization antennas, this is the polarization of the electric field orthogonal to the co-polar polarization; for circular polarization antennas, this is the circular polarization with a rotation that is opposite to the one defined for the co-polar polarization. XVIII - Passive intermodulation products: spurious signal components generated by antenna non linearities, with frequencies that are different from those contained in a set of two or more senoid signals applied at its entrance XIX - Survival winds: winds whose speed is the maximum speed supported by the antenna without occurrence of deformities and other damages which can permanently alter its electric characteristics; XX - Operating winds: winds whose speed is the maximum speed supported by the antenna without its axis undergoing any angular deviations above 15% of the beam width. 5. Electric Characteristics 5.1. Beam Width on Horizontal and Vertical Planes The nominal beam width values on horizontal and vertical planes must be informed by the manufacturer. The values measured should not present variations in excess of ± 10% as compared to nominal values Minimum Gain The rated value of the minimum gain must be informed by the manufacturer. The measured value of this gain must not be below the rated value by more than 1 db. 5.3 Radiation Diagram Envelopes The antennas to be certified and homologated as regards the fixed service must comply with the enveloping requirements regarding co-polar polarization and cross polarization, as specified in items to The antennas to be certified and homologated only for the mobile service must comply with the enveloping requirements only regarding co-polar polarization For tables that define the envelopes of the radiation diagrams, the following symbology has been adopted: a) f P : central frequency of the antenna operating band, in GHz, when this frequency is equal to or less than 11 GHz, and in cases when the central operation frequency is greater than 11 GHz, f P should be equal to 11; b) 0h: beam width on the horizontal plane, measured in degrees; c) 0v: beam width on the vertical plane, measured in degrees The envelope for the horizontal radiation diagram in the co-polar polarization of sectorial antennas is as specified in Figure 1 and Table 1.

3 Ganho Relativo - Relative Gain (db) Co-Polar - Co-polar Cruzada - Cross Polar Direção relative ao eixo - Direction relative to the axis Figure 1 Envelopes for the horizontal radiation diagram for sectorial antennas Table 1 Envelopes for the horizontal radiation diagram for co-polar polarization for sectorial antennas. Point Direction (Degrees) Gain Relative to the Axis (db) P P1 0.5θ h P2 0.5θ h f p 7f p - 14 P f p for f p 1 1.4f p for f p < 1 P f p The envelope for the horizontal radiation diagram in cross polarization for sectorial antennas is as specified in Figure 1 and Table 2.

4 Table 2 - Envelope for the horizontal radiation diagram in cross polarization for sectorial antennas Point Direction (Degrees) Gain Relative to the Axis (db) Q Q1 0.5θ h f p -18 Q2 0.5θ h f p 1.4f p - 18 Q f p The gain of omni-directional antennas should not present fluctuations larger than ±3 db on horizontal plane The envelope of the horizontal and vertical radiation diagrams in cross polarization for omni-directional antennas has been specified with a constant value equal to -20 db as compared to the antenna gain along the direction of the axis The envelope of the vertical radiation diagram in co-polar polarization for sectorial and omni-directional antennas is as specified in Figure 2 and Table Point 4 (P4) of table 3 applies only in the case of sectorial antennas. Ganho Relativo - Relative Gain (db) Co-Polar - Co-polar Cruzada - Cross Polar Direção relative ao eixo - Direction relative to the axis Table 3 Envelope for the vertical co-polar radiation diagram for sectorial and omni-directional antennas. Point Direction (Degrees) Gain Relative to the Axis (db) P P1 0.5θ v 0 P2 0.5θ v f p 0.5f p - 11 P f p - 17 P f p - 18

5 5.3.9 The envelope of the vertical radiation diagram in cross polarization for sectorial antennas is as specified in Figure 2 and Table 4. Table 4 Envelope for the vertical diagram in crossed polarization for sectorial antennas Point Direction (Degrees) Gain Relative to the Axis (db) Q Q1 0.5θ v f p -18 Q2 0.5θ v f p 1.4f p - 18 Q f p Stationary wave coefficient The stationary wave coefficient must be less than or equal to 1.5 degrees for sectorial and omni-directional antennas. 5.5 Passive intermodulation Passive intermodulation products for sectorial or omni-directional antennas should not exceed the limit of dbc pertaining to carriers of up to 43 dbm. dbc means decibels as regards the carrier. 5.6 Intradoor insulation For antennas that have more than one input port, intradoor insulation must be greater than 20dB for operation frequencies less than or equal to 1 GHZ and larger than 25dB for operation frequencies larger than 1 GHz. 5.7 Polarization The antennas must radiate in linear or circular polarization, simple or double, complying with the regulations on conditions for use of radiofrequencies contained in the Assignment, Destination and Distribution Plan for Frequency Bands approved by Anatel. 6. Mechanic and Environmental Characteristics 6.1. Wind Resistance The antenna must support survival winds with speeds not lower than 120 km/h and operating winds with speeds not lower than 50 km/h. The rated values of the survival and operating winds must be informed by the manufacturer. 6.2 Protection against rain The antenna must not allow accumulation or entry of water in any point which can cause degradation of its conditions and operating specifications. When applicable, the antenna must provide draining systems for condensation water. 6.3 Temperature range At the ambient temperature range of -10 ºC to 50 ºC, the antenna must keep its electric characteristics within the limits specified in item 5 herein. 7. Certification and Homologation

6 7.1 For certification and homologation, the antennas must undergo the tests described in annex I, in reference to its electric characteristics described in item 5, and the manufacturer must provide a compliance statement pursuant to the mechanic and environmental characteristics described in item In case of an antenna family, the model with the lowest gain must undergo the tests described in annex I for evaluation of compliance. For all other models, the manufacturer must provide a compliance statement pursuant to the requirements of items 5 and 6 hereof, attaching the electric, mechanic and environmental characteristics specifications, including the radiation diagrams of each model of the family The certification and homologation of the model with the lowest gain will comprise certification and homologation of all other constituent models of the same family Sectorial and omni-directional antennas which are mechanically incorporated to transceptors and which as not commercialized as a single product are not subject to certification and homologation with the National Telecommunications Agency. However, the radiation diagrams and the electric, mechanic and environmental characteristics specifications of such antennas must be provided within the scope of the certification and homologation process of the transceptors. Evidence of compliance of the electric, mechanic and environmental characteristics of such antennas must be provided through a statement prepared by the manufacturer The sectorial and omni-directional antennas to be internally used in buildings are exempt from the obligation of homologation with the National Telecommunications Agency. 8. Identification of Homologation The antennas must have a readable ANATEL identification label, including the logotype of ANATEL, the homologation number and bar code identification of the homologation, according to the model and the instructions described in article 39 and Annex 3 of the Telecommunications Products Certification and Homologation Regulation, annex to Resolution No. 242 dated , or any other that comes to replace it. ANNEX I TEST METHODS FOR COMPLIACE EVALUATION OF SECTORIAL AND OMNI- DIRECTIONAL ANTENNAS I.1. General Test Conditions I.1.1. The test methods for compliance evaluation presented herein are typical and recommended. Alternative methods can be used by means of agreement between the certification applicant, the test laboratory and the appointed certification agency. The description and the justification for the alternative method agreed upon must be contained in the Test Report. I.1.2. The antenna sample to be presented for compliance evaluation must be representative of the models under production. I.1.3. In the test report, there must be a description of the test procedures, a list of the equipment used and an error estimate for each measurement. I.2. Gain I.2.2. Objective To determine the antenna gain at different frequencies. I.2.2. Equipment

7 Antenna test field or anechoic chamber with positioners, transmission antenna, transmitter and receiver. Standard antenna with known gain I.2.3. Block diagram of the equipment. Antena Padrão - Standard Antenna Isoladores idênticos - Identical Insulators Antena Transmissorea - Transmitting Antenna Antena sob teste - Antenna under Test Transmissor Transmitter Receptor - Receiver Figure 3 - Block diagram of the equipment for gain measurement. I.2.4. Test Procedure for liner polarization antennas With the antenna under test and the standard antenna aligned in the direction of the transmitted signal, and with aligned polarization for the maximum signal received, the values of the signals received by the antenna under test and by the standard antenna will be measured. The gain will be calculated through the formula (1): G A = G AP + 20.log V A (1) V AP Where: GA = gain of the antenna under test in dbi; GAP = gain of the standard antenna in dbi; VA = voltage received by the antenna under test in mv; VAP = voltage received by the standard antenna in mv. The measurement will be performed at, at least, the inferior, center and superior frequency of each operating frequency band. I.2.5 Test procedures for antennas with circular polarization For antennas with circular polarization, two methods may be employed to determine the gain:

8 i) The use of a standard antenna with circular polarization. The test procedure is identical to the one specified in I.2.4; ii) The use of a standard antenna with a linear polarization. In this case partial gains are going to be measured for two octagonal polarizations of the standard antenna, following the procedure specified in I.2.4. These partial gains are to be converted from dbi to linear and added numeric values. When the value of the sum for db is converted, the gain of the antenna is obtained in dbi. I.3. Radiation Diagram I.3.1. Objective To determine the radiation diagrams for co-polar and cross polarization on horizontal and vertical planes. I.3.2. Equipment Antenna test field or anechoic chamber, with positioners, transmission antenna, transmitter, receiver and register or data acquisition system. I.3.3. Block diagram of the equipment Antena transmissora - Transmitter antenna Transmissor - Transmitter Antena sob teste - Antenna Under Test Posicionador - Positioner Receptor e Sistema de aquisição de dados - Receiver and Data Acquisition System Figure 4 - Block diagram of the equipment for radiation diagram measurement. I.3.4. Test Procedure for linear polarization antennas For determination of the co-polar polarization diagrams, the antenna under test will be aligned in the direction of the transmitted signal, and the polarization will be aligned with the maximum signal received. For cross polarization diagrams, the transmitter antenna polarization will be rotated by 90º from the direction obtained for measurement of the co-polar diagram. The transmitter antenna must radiate in linear polarization. The radiation diagrams must be outlined for the horizontal and vertical planes at least for the inferior, medium and superior frequencies of each operating frequency band. I.3.5 Test procedures for antennas with circular polarization.

9 Three different measurement methods may be employed: i) The use of a transmitter antenna with a circular polarization in a rotation direction which is identical to that of the antenna under test, to measure the co-polar diagram, and in the opposed direction to measure the cross polar polarization; ii) The use of a rotating transmitter antenna with linear polarization, under a much larger rotation speed than the rotation speed of the positioner of the antenna under test. The resulting radiation diagram will present two envelopes corresponding to a maximum and minimum sequences, with frequencies equal to those of the rotation of the transmitter antenna. The difference between the values of the envelopes for a given radiation angle provides an axial ratio for that radiation angle. The diagram envelopes and the axial ratio values must be converted into co-polar diagrams with cross polarization. iii) The measurement of amplitude and phase diagrams for signals transmitted by two orthogonal polarizations of an antenna possessing linear polarization. The values of the module and signals phase are to be converted into amplitude values with co-polar and cross polarizations. Radiation diagrams should be drawn for the horizontal and vertical planes for at least the inferior, medium and superior frequencies for each operation frequency bands. I.4 Stationary Wave Coefficient I.4.1 Objective To determine the coefficient of the stationary wave as a function of the frequency at the antenna s input port. I.4.2 Equipment Test field for the antennas or for the anechoic chamber. Sweep generator Amplitude analyzer Directional couplers I.4.3 Block diagram of the equipment Analisadoe de amplitude - Amplitude Analyzer Acoplador directional - Directional Coupler Gerador de varredura - Sweep Generator Antena sob teste - Antenna Under Test

10 Figure 5 Block diagram of the equipment used to measure the coefficient of the stationary wave. I.4.4 Test Procedures The signal from the sweep generator sweeps through the operation frequency band of the antenna, and is applied to the antenna s input terminal. The return loss is measured as a function of the frequency by the amplitude analyzer. The values of the return loss (PR) are converted into stationary wave coefficients (COE) through the following equations: PR = -20log(ρ) COE = (1+p)/(1-p) Where ρ is the reflection coefficient module at the antenna s input port. I.5 Passive Intermodulation I.5.1 Objective To check the level of the passive intermediation products generated by the antenna. I.5.2 Equipment Two RF generators and amplifiers with an output power greater than 20W of the added circuit (hybrid or circulators), directional coupler, spectrum analyzer. I.5.3 Block diagrams of the test device Gerador - GENERATOR 1 Gerador - GENERATOR 2 Somador - ADDING DEVICE Acoplador directional - Directional Coupler Analisador de Espectro - Spectrum Analyzer (or a calibrated receiver) Antena sob teste - Antenna Under Test Figure 6 Block diagram of the device under test for measuring the passive intermodulation

11 I.5.4 Test Procedures Generators 1 and 2 with the antenna under test being replaced by a matched load must supply a power of 2x43 dbm to this load, when the intermodulation products are under -150dBc. When the signal which is the compound of the sum of the signals from generators 1 and 2 is applied to the antenna, the reflected signal will be winnowed by a directional coupler and its spectrum will be analyzed by a spectrum analyzer (or by a receiver calibrated by a variable syntony), thus determining the values of the intermodulation products. I.6 Intraport Insulation I.6.1 Objective Check the intraport insulation of the antenna if more than one input port exists. I.6.2 Equipment Sweep generator, directional couplers, amplitude analyzer. I.6.3 Block diagrams of the test device Portas de entrada - Input Ports Antena sob teste - Antenna Under Test Acoplador direcional - Directional Coupler Analisador de Amplitude - Amplitude Analyzer Gerador de varredura - Sweep Generator Figure 7 Block diagram of the test device to measure the intraport insulation. I.6.4 Test Procedures The intraport transmission coefficient is determined, with the sweep generator covering the antenna s frequency bands.