Marco Peyrot-Solis

Orthogonal Ultra-Wideband Planar Monopole Antenna for EMC Studies

A novel orthogonal ultra-wideband antenna with a more stable radiation pattern at high frequencies is presented. Here it is showed that using an orthogonal planar monopole antenna the stability of the radiation pattern at high frequencies of the operational bandwidth is enhanced without affecting the radiation patterns at lower frequencies. Using the obtained results an orthogonal UWB planar monopole antenna was designed with an operational bandwidth of 19.4 GHz. The measured antenna bandwidth goes from 530 MHz to 20 GHz for a VSWR les 2. The radiation pattern remains is enhanced with respect to a conventional planar monopole antenna with similar characteristics. The radiator used on the single and an orthogonal UWB planar monopole antenna is rectangular with a bevel and height-width ratio techniques that optimized the impedance bandwidth.

Omnidirectional UWB antenna for monitoring applications at UHF and microwave bands

A highly omnidirectional UWB antenna is presented. The device is suitable for monitoring purposes. The measured bandwidth goes from 0.27 GHz to 17.7 GHz, with S11 of ≤ -10 dB. The H-Field radiation pattern has an out-of-roundness less than ±3 dB in the entire band. The antenna has a structure of a π/4 bi-orthogonal rectangular monopole with bevel angle.

Proposal of a Planar Directional UWB Antenna for Any Desired Operational Bandwidth

A novel planar directional UWB antenna is proposed. The antenna design evolves from an oblique elliptic cone antenna by applying the planar-solid correspondence to two axes. Through a simple equation, this antenna can be designed, to operate at a specific lower cutoff frequency with a bandwidth larger than 10 GHz for a reflection coefficient magnitude lower than −10 dB. This characteristic provides the antenna with a good versatility. The directional radiation pattern has an average gain of 6 dBi.

Proposal and Development of Two Directional UWB Monopole Antennas

Two directional UWB monopole antennas are proposed. It is shown that a design methodology for omnidirectional UWB rectangular planar monopole antennas can be applied for directional ones. The directional features are taken by introducing a slanting angle between the radiator and the ground plane. The slanting angle also plays a role in the low cutofi frequency, and it is considered in a proposed equation to determine that frequency. For the two UWB antennas the radiators have a rectangular shape, and the bandwidth is extended by choosing beveling angle and an appropriate height-width ratio. The developed antennas have a bandwidth wider than 10GHz for a re∞ection coe-cient lower than i10dB. The directional radiation pattern has an average gain of 5dB.