Druckschrift 99810454, New Broadcast Antenna Solutions for Digital ...

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Main Transm UHF Broadband Antennas on Steel Carriers These arrays, consisting of newly- developed radomized 4-dipole panels, are designed for use in the UHF band 470 – 862 MHz. Radiation patterns with smooth and very constant shapes over the entire UHF band help to avoid creating “bad channels”. Thus, these systems are extremely suitable for multi-channel, high-power master DTV stations. In order to increase the gain, stacking of up to 16 bays is possible, allowing a power-handling capacity of more than 100 kW RMS. Interior access and climbing-safety installations (e.g. ASIR) are also possible. 4 • on square steel carrier or open mounting structures – Constant omni or directional pattern with circularity < ±2 dB – horizontal or vertical polarization – VSWR < 1.2 over whole band Horizontally polarized array 4 panels per bay Panel model series K 72 32 4. 270 90 10 • on octagonal steel carrier – Constant omni pattern with circularity < ±1.5 dB – vertical polarization – VSWR < 1.2 over whole band Vertically polarized array 8 panels per bay Panel model series 750 10045 3 0 dB 0 180 0 0 180 470 MHz 550 MHz 650 MHz 750 MHz 860 MHz 470 MHz 550 MHz 650 MHz 750 MHz 860 MHz 270 90 10 3 dB Vertically polarized array 4 panels per bay Panel model series K 73 32 4. 270 90 10 3 0 0 180 Horizontal Patterns Horizontal Patterns Horizontal Patterns dB 470 MHz 550 MHz 650 MHz 750 MHz 860 MHz
itter Antennas UHF Broadband Antennas in ∅ 1.6 m GRP Radome For stations where there are very harsh environmental conditions (snow/ice), antenna arrays that are fully covered by a GRP radome are recommended. For horizontal polarization and omnidirectional horizontal patterns, Superturnstile elements are used. For vertical polarization and omni or directional patterns, specially developed panels are implemented in square or octagonal structures. All the above solutions are offered fully broadband over the 470 – 862 MHz range, which makes them highly suitable for multi-channel master DTV stations. In order to increase the gain, stacking of up to 16 bays is possible, allowing a power handling capacity of more than 100 kW RMS. • Superturnstile antenna – Constant omni pattern with circularity < ±1.5 dB – horizontal polarization – VSWR < 1.2 over whole band • Octagonal panel structure – Constant omni or directional pattern with circularity < ±1.5 dB – vertical polarization – VSWR < 1.2 over whole band – Building Block: Panel Model 750 10041 Superturnstile antenna in GRP radome 270 90 10 3 Vertically polarized array in GRP radome 8 panels per bay 270 90 10 3 0 dB 0 180 Horizontal Patterns 0 dB 0 180 Horizontal Patterns 470 MHz 550 MHz 650 MHz 750 MHz 860 MHz 470 MHz 550 MHz 650 MHz 750 MHz 860 MHz 5
Page 1 and 2: DVB New Broadcast Antenna Solutions
Page 3: DVB-T DVB-H / T-DMB trial projects
Page 7 and 8: iller Antennas UHF Omnidirectional
Page 9 and 10: T-DMB L-Band Antennas for Special A
Page 11 and 12: RPCs Typical Reference Planning Con

Druckschrift 99810454, New Broadcast Antenna Solutions for Digital ...

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