Product Description CISPR 16 divides the frequency range into several bands and defines specific antennas for each of these bands. For the frequency range above 1 GHz, CISPR 16 specifies using wideband horn antennas for radiated noise measurements. Standard wideband horn antennas for EMC applications are quite costly and cover a frequency range far wider than available on typical low cost EMC pre-compliance spectrum analyzers. In order to provide an antenna optimized for pre-compliance EMC testing applications above 1 GHz, Tekbox designed the TBMA4 double ridged horn measurement antenna.With its moderate price, it is an affordable product for radiated noise EMC precompliance testing and generating defined field strengths. The TBMA4 is characterized from 1 GHz to 8 GHz and has a directional pattern typical for double ridged horn antennas. The TBMA4 is a small double ridged horn antenna, with its radiating element made from edge plated PCB substrate. The housing is made from stainless steel. It is equipped with a standard female N-connector and comes together with a “pistol-grip” tripod. A standard ¼” thread on the bottom of the antenna makes it easy to connect it to most standard tripods. Additionally, the antenna is equipped with an indexed mounting plate on its rear. The mounting plate has a 6mm threaded hole in its centre and radially positioned 4mm threaded holes in 45° steps, typical for most horn antennas. SPECIFICATIONS Type: double ridged horn Frequency range: 1 GHz – 8 GHz Nominal impedance: 50 Ω Connector: N type female Maximum continuous input RF power: 100 W Isotropic gain: 6 … 14 dBi Antenna factor: 24 … 43 dB/m Front to back ratio: avg. 20 dB Voltage Standing Wave Ratio (VSWR): < 3:1 over the entire frequency range; < 2:1 average Width: 241 mm (9.49 “) Height: 153 mm (6.03 “) Depth: 214 mm (8.44 “) Weight: 1.4 kg (3.08 lbs) Tripod Adapter Thread Size: ¼” Indexed rear mounting flange Documentation Download: TBMA4 Manual TBMA4 Testreport TBMA4 antenna factor file for EMCview Application note: How to correctly use spectrum analyzers for EMC pre-compliance tests

Product Description The TBMA3 is an affordable logarithmic periodic measurement antenna, targeting radiated noise EMC pre- compliance testing. The TBMA3 is characterized from 250 MHz to 1.3 GHz and has VSWR and antenna factor values typical for log-periodic measurement antennas. CISPR 16 divides the frequency range into several bands and defines specific antennas for each of these bands. For the frequency range above 300 MHz up to 1 GHz, CISPR 16 specifies using logarithmic periodic antennas (log-periodic antennas ) for radiated noise measurements. The TBMA3 is an average sized log-periodic antenna, with its radiating elements and supporting booms made from powder coated aluminum alloy. It is equipped with a standard female N-connector and comes together with an antenna bracket and a mounting adapter. A standard ¼” thread on the bottom of the mounting adapter makes it easy to connect it to most standard tripods. The TBMDA3 is shipped in a robust carrying case, as pictured above. SPECIFICATIONS Type: logarithmic periodic Frequency range: 250 MHz– 1300 MHz Nominal impedance: 50 Ω Connector: N type female Maximum continuous input RF power: 100 W Isotropic gain: 6 dBi ± 1.5 dB Antenna factor: 14.2 … 27.5 dB/m Voltage Standing Wave Ratio (VSWR): < 1.95:1 over the entire frequency range ; 1.35:1 average Width: 749 mm (29.49”) Height (With the mounting adapter): 170.23 mm (6.70”) Height (Without the mounting adapter): 79.5 mm (3.13”) Depth: 863 mm (33.98”) Weight: 1.78 kg (3.92 lbs) Tripod Adapter Thread Size: ¼” Documentation Download: TBMA3 Manual TBMA3 Testreport TBMA3 antenna factor file for EMCview Application note: How to correctly use spectrum analyzers for EMC pre-compliance tests

Product Description The TBMA2 is a biconical measurement antenna for EMC radiated emission testing and generating defined field strength. With its affordable price it is an excellent choice for any lab carrying out in house pre-compliance testing. It is characterized from 30 MHz to 300 MHz and has a directional pattern similar to a dipole antenna. The TBMA2 comes with a POM bracket with a ¼ ” thread insert for mounting the antenna on standard tripods. The TBMA2 radiating elements are made of stainless steel parts to avoid the disadvantages of contact degeneration over time, which are associated with non-welded designs using aluminum. The radiating elements are not welded but fastened with grub screws, which makes assembly / disassembly simple and makes the antenna easily storable and transportable. The antenna elements are fed via a 1:4 balun with 100 W power handling capability. SPECIFICATIONS Type: passive biconical Frequency range: 30 MHz– 300 MHz Nominal impedance: 50 Ω Balun: 1:4 Maximum continuous input RF power: 100 W Connector: N type female Isotropic Gain: -12.51 to 0.55, see Figure 2 and Table 1 Antenna Factor: 10.8 to 26.3, see Figure 3 and Table 1 Voltage Standing Wave Ratio (VSWR): 1.05 to 38.05, see Figure 4 and Figure 5 Test standards: FCC, CISPR, SAE, RTCA-DO-160, Mil STD-461, etc. Length: 138.7 cm (54.6 “) tip Diameter: 54.2 cm (21.3 “) Depth: 80.3 cm (31.6 “) including balun Weight of one radiating element: 1.28 kg (2.82 lbs) Weight of holder/balun: 0.96 kg (2.12 lbs) Documentation Download : TBMA2 Manual TBMA2 Testreport TBMA2 antenna factor file for EMCview Application note: How to correctly use spectrum analyzers for EMC pre-compliance tests

Product Description The TBMA1 is a small, lightweight, wideband biconical measurement antenna. With its moderate price, it is ideal for radiated noise EMC pre-compliance testing and for generating defined field strength. It is characterized from 30 MHz to 1 GHz and has a directional pattern similar to a dipole. The TBMA1 comes in a solid beech wood case, together with a “pistol-grip” tripod. A standard ¼” thread makes it easy to connect it to most standard tripods. The elements are corrosion resistant and constructively locked against rotation. They are fed via a wideband balun with  2 W power handling capability. Furthermore they are protected against build-up of static charge. SPECIFICATIONS Type: passive biconical Frequency range: 30 MHz – 1000MHz Nominal impedance: 50 Ω Maximum continuous input RF power: 2 W Connector: N type female Isotropic gain: -42.15 … 1.78 dBi Antenna factor: 16.30 … 41.91 dB/m Voltage Standing Wave Ratio (VSWR) Max < 2.8 Length: 430 mm (17 “) tip-to-tip Diameter: 160 mm (6.3 “) Depth: 163 mm (6.4 “) including housing Weight: 0.46 kg (1.01 lbs) Tripod Adapter Thread Size: ¼” LINKS AND REVIEWS EDN Review (EMC Blog from Kenneth Wyatt) Documentation Download: TBMA1 Manual TBMA1 antenna factor file for EMCview Application note: How to correctly use spectrum analyzers for EMC pre-compliance tests