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A new concept for photonic transmitter (PT) is presented for radio-over-fiber (RoF) wireless communication in E-band frequencies. The device features a high power and high frequency photodiode (PD) integrated with a wideband and high gain tapered slot antenna with a built-in biasing network on an RF laminate. Presented approach allows for simpler and low loss optoelectronic integration. The full-wave...
In this paper we present 1Gb/s wireless data reception at different sub-THz carrier wave frequencies, using a single quasi-optic Schottky receiver module. The module employs a Log-Spiral broadband antenna patterned on silicon. In this paper we present the performances at carrier wave frequencies ranging from 90 GHz to 330 GHz, demonstrating for the first time the flexibility of the module as versatile...
A new topology covering the new VGOS (VLBI Global Observation System) configuration is presented. The VGOS's requirement is a feed system covering from 2 GHz to 14 GHz. The new receiver topology is based on a log-spiral antenna printed on a conical surface. To achieve the dual circular polarization, an array of four elements is proposed. A proper balun for feeding the antenna and covering the whole...
The success in conquering the terahertz (THz) gap is subject to some facts such as maximizing the emitted power. Traditionally resonant antenna designs for continuous-wave (CW) THz photomixing include a RF choke to compensate the capacitive part of the photomixer and an antenna with a very high input impedance at its resonance to match the low value of the photomixer conductance. This communication...
A new structure for improving the efficiency of antennas in the terahertz band is presented. The structure aims for reducing the energy distribution on a high permittivity material by etching a dielectric horn. The structure allows ultra wideband operation when a broadband antenna is used for excitation. The fundamental mode that propagates in the structure is the HE11 mode, which results of a combination...
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