![]() ![]() ![]() The system was successfully operated in the field in L-band at peak power levels exceeding 5 MW. The antenna has a measured gain of 32 dBi and a 3-dB beamwidth of approximately 4.5 degrees. The system was mounted on an antenna pedestal to allow for fine (approximately 0.001 degrees) elevation and azimuth control the antenna and pedestal were mounted on a 4.3 m long trailer for mobility in the field. A 3.6 m diameter, commercial off-the-shelf parabolic dish antenna was modified with a custom-designed waveguide horn feed. The antenna was designed to radiate in L-band at peak power levels exceeding 1 X 106 watts. M.Ī high-gain, prime-focus parabolic dish antenna system was designed and constructed for experimental use in the field. The above studies would enable the design of robust high throughput multi-Gbps data rate future space-to-ground satellite communication links.Ī high-gain high-power L-band antenna for field test applicationsĪbe, David K. In addition, the architecture for a compact beacon transmitter, which includes the multi-tone synthesizer, polarizer, horn antenna, and power/control electronics, has been investigated for a notional space-to-ground radio wave propagation experiment payload on a small satellite. The intended application of the synthesizer is in a satellite beacon transmitter for radio wave propagation studies at K- band (18 to 26.5 GHz), Q- band (37 to 42 GHz), and E- band (71 to 76 GHz). This paper presents the design and test results of a multi- band multi-tone tunable millimeter-wave frequency synthesizer, based on a solid-state frequency comb generator. Multi- Band Multi-Tone Tunable Millimeter-Wave Frequency Synthesizer For Satellite Beacon Transmitter The satellite beacon antenna is configured as an offset-fed cutparaboloidal reflector. The beacon uses a phased locked loop stabilized dielectric resonator oscillator and a solid-state power amplifier to achieve the desired output power. In this paper, the design of a beacon transmitter that will be flown as a hosted payload on a geostationary satellite to enable propagation experiments at Q- band (37 to 41 GHz) frequencies is presented. Q- Band (37 to 41 GHz) Satellite Beacon Architecture for RF Propagation Experiments The satellite beacon antenna is configured as an offset-fed cut-paraboloidal reflector. In this paper, the design of a beacon transmitter that will be flown as a hosted payload on a geostationary satellite to enable propagation experiments at Q- band (37-41 GHz) frequencies is presented. Q- Band (37-41 GHz) Satellite Beacon Architecture for RF Propagation Experiments ![]()
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