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Summary of Contents for Com-Power AH-826
- Page 1 Page 1 of 10 INSTRUCTION MANUAL Horn Antenna (AH‐826) INSTRUCTION MANUAL Horn Antenna AH‐826 18 GHz to 26.5 GHz 19121 El Toro Road Lake Forest, CA 92676 ● (949) 459‐9600● fax (949) 459‐9604 ● com‐power.com REV102913 ...
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Page 2: Table Of Contents
Page 2 of 10 INSTRUCTION MANUAL Horn Antenna (AH‐826) Table of Contents Introduction ...................... 3 2.0 Product Description ...................... 4 Overview ............................ 4 Standard Items included with the antenna: ................ 4 3. 0 Product Specifications .................... 5 3.1 Other Horn Antennas available from Com‐Power ............. 5 3.2 Other instrumentation accessories available ............. 5 4. 0 Important Safety Precautions .................. 6 5.0 Warranty ........................ 7 5.1 Maintenance ........................ 7 6.0 Setting up and using the antenna ................ 8 ... -
Page 3: Introduction
Page 3 of 10 INSTRUCTION MANUAL Horn Antenna (AH‐826) 1.0 Introduction This manual includes the antenna specifications, safety precautions, maintenance and warranty information. It also includes some basic guidance on properly on how to use it for EMC testing. Information contained in this manual is the property of Com‐Power Corporation. It is issued with the understanding that none of the material may be reproduced or copied without permission from Com‐Power. 19121 El Toro Road Lake Forest, CA 92676 ● (949) 459‐9600● fax (949) 459‐9604 ● com‐power.com REV102913 ... -
Page 4: Product Description
Page 4 of 10 INSTRUCTION MANUAL Horn Antenna (AH‐826) 2.0 Product Description Overview The model AH‐826 Horn antenna was specifically designed for EMI measurement from 18 to 26.5 GHz. The antenna is capable of receiving and transmitting signals for EMC testing. The Horn antenna is a transducer which converts electric field strength that can be displayed on a spectrum analyzer or EMI receiver during EMI testing. Setting up using the antenna is described in section 6. Information on theory of operation is given in section7. Standard Items included with the antenna: o User's guide. o Calibration data and Certificate traceable to NIST. Optional item o ISO‐17025 calibration data and certificate. 19121 El Toro Road Lake Forest, CA 92676 ● (949) 459‐9600● fax (949) 459‐9604 ● com‐power.com REV102913 ... -
Page 5: Product Specifications
Page 5 of 10 INSTRUCTION MANUAL Horn Antenna (AH‐826) 3. 0 Product Specifications Model: AH‐826 Frequency Range: 18 GHz to 26.5 GHz Typical VSWR: < 2: 1 Power Handling: 5 Watts CW Output Impedance: 50 Ω Polarization: Linear Gain: 23 dBi min Antenna Factors: 32 to 34 dB/m Connector: SMA (f) ... -
Page 6: Important Safety Precautions
Page 6 of 10 INSTRUCTION MANUAL Horn Antenna (AH‐826) 4. 0 Important Safety Precautions Generating Electro Magnetic Fields The Model AH‐826 antenna can used to generate electro‐ magnetic fields for immunity testing. Immunity testing should be conducted inside a shielded enclosure or anchoic chamber to avoid interference to other equipment and exposure of personnel to high electromagnetic fields. Maintenance There are no user serviceable parts in the antenna. User modifications to the antenna will void warranty and may also invalidate the calibration. Send the antenna to an authorized Com‐Power service center if needs repair. Please visit our website at www.com‐power.com to request a return merchandise authorization number (RMA) before you send the unit in for service. Environmental conditions This antenna is designed for indoor or outdoor use. 19121 El Toro Road Lake Forest, CA 92676 ● (949) 459‐9600● fax (949) 459‐9604 ● com‐power.com REV102913 ... -
Page 7: Warranty
Page 7 of 10 INSTRUCTION MANUAL Horn Antenna (AH‐826) 5.0 Warranty Com‐Power warrants to its Customers that the antennas it manufactures will be free from defects in materials and workmanship for a period of 3 years. This warranty shall not apply to: • Transport damages during shipment from your plant. • Damages due to poor packaging. • Products operated outside their specifications. • Products Improperly maintained or modified. • Consumable items such as fuses, power cords, cables, etc. • Normal wear • Calibration • Products shipped outside the United States without the prior knowlege of Com‐ Power. ... -
Page 8: Setting Up And Using The Antenna
Page 8 of 10 INSTRUCTION MANUAL Horn Antenna (AH‐826) 6.0 Setting up and using the antenna 6.1 Connecting The model AH‐826 horn antenna has a type SMA female connector of signal output or input. It can handle up to 5 Watts CW signal. These connectors are delicate and should be handled with care. Do not over tighten or use excessive force when making connections. 6.2 Antenna setup for receiving signals The model AH‐826 must be connected to the receiver / spectrum analyzer with high frequency, low loss cables. The loss must be measured and used in calculating the field strength. 6.3 Antenna setup for transmitting signals When the AH‐826 antenna is used for transmitting signals, the antenna is connected to a microwave signal generator and a power amplifier. The model AH‐826 antenna can transmit up to 5 Watts of continuous power. The field generated by the antenna can be measured by using a field strength meter / probe or another horn antenna. 6.4 Test location The Horn Antenna must be mounted and placed in area away from other conductive objects or materials when in use. Large conductive building, structures and electrical cables, can reflect and reradiate the emissions of EUT, causing errors in the test data. In addition, care should be taken to keep measuring instruments and test personnel away from the test area to avoid interference to the test, as well exposure of test personnel to high electro‐magnetic fields. ... -
Page 9: Theory Of Operation
Page 9 of 10 INSTRUCTION MANUAL Horn Antenna (AH‐826) 7.0 Theory of Operation 7.1 Overview Broadband antennas allow measurement of signals over a wide frequency range. Model AH‐ 826 Horn Antennas are broadband antennas that operate in the frequency range of 18 to 26.5 GHz. Model AH‐826 can both receive and Transmit over the frequency range of operation and is used for susceptibility and emissions testing in EMC Laboratories. Before the Horn antennas are used for measurement they have to be calibrated. During calibration of a known field strength (dBµV/m) is generated around the antenna at each frequency at predetermined intervals between 18 GHz – 26.5 GHz. The difference between field strength (dBµV/m) received by the antenna and known field strength generated (dBµV/m) is the antenna factor (dB/m) for that frequency. During EMC testing the antenna factor for the frequency of interest is added back to reading on the EMI meter or spectrum analyzer to calculate the field strength measured by the antenna. Field strength (dBµV/m) = Output measured (dBµV) + Antenna Factor (dB/m) When using the AH‐826 antenna for transmitting application, please refer to Table 8.1 to determine the power requirements to generate the desired electro‐magnetic field. 19121 El Toro Road Lake Forest, CA 92676 ● (949) 459‐9600● fax (949) 459‐9604 ● com‐power.com REV102913 ... -
Page 10: Typical Antenna Data
Page 10 of 10 INSTRUCTION MANUAL Horn Antenna (AH‐826) 8.0 Typical Antenna Data Frequency (GHz) Figure 8.1 – Typical Antenna Factors Gain 10 20 100 Frequency (dBi) V/m V/m V/m 18000 23.02 0.02 0.07 1.66 19000 23.29 0.02 0.06 1.56 20000 23.73 0.01 0.06 1.41 21000 23.95 0.01 0.05 1.34 22000 24.16 0.01 ...
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