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EnglishIn this paper a design method for a circular polarized small-size microstrip antenna on a short dielectric layer is presented. It's known that exciting two detuned modes with a single coaxial probe makes possible circular polarization (CP) but as yet little efforts were made in order to control CP frequency and exact 50 ohm matching. A straight forward circuital model for the device can solve both this issues and gives hint for the best radiator design; our prototype is a circular disc slotted by a concentric elliptical cut in order to slightly perturb the central symmetry and obtain the modal degeneration. It includes a SPDT to allow the switching between the two CP. The prototype is designed for 2.44 GHz and exhibits a return loss of 19 dB, an impedance BW of 120 MHz a directivity of 6 dB and an estimated gain of 1.8 dB.
A Design Method for Single-Feed Wideband Microstrip Patch Antenna for Switchable Circular Polarization / S. Maddio; A. Cidronali; I. Magrini; G. Manes. - STAMPA. - (2007), pp. 262-265. ((Intervento presentato al convegno European Microwave Conference tenutosi a Munich (D) nel 9-12 Oct. 2007 [10.1109/EUMC.2007.4405176].
| Titolo: | A Design Method for Single-Feed Wideband Microstrip Patch Antenna for Switchable Circular Polarization | |
| Autori di Ateneo: | ||
| Autori: | MADDIO, STEFANO; CIDRONALI, ALESSANDRO; MAGRINI, IACOPO; MANES, GIANFRANCO | |
| Anno di registrazione: | 2007 | |
| Titolo del libro: | Proceedings of the 37th European Microwave Conference | |
| Titolo del congresso: | European Microwave Conference | |
| Luogo del congresso: | Munich (D) | |
| Data del congresso: | 9-12 Oct. 2007 | |
| Abstract: | In this paper a design method for a circular polarized small-size microstrip antenna on a short dielectric layer is presented. It's known that exciting two detuned modes with a single coaxial probe makes possible circular polarization (CP) but as yet little efforts were made in order to control CP frequency and exact 50 ohm matching. A straight forward circuital model for the device can solve both this issues and gives hint for the best radiator design; our prototype is a circular disc slotted by a concentric elliptical cut in order to slightly perturb the central symmetry and obtain the modal degeneration. It includes a SPDT to allow the switching between the two CP. The prototype is designed for 2.44 GHz and exhibits a return loss of 19 dB, an impedance BW of 120 MHz a directivity of 6 dB and an estimated gain of 1.8 dB. | |
| Handle: | http://hdl.handle.net/2158/392846 | |
| Appare nelle tipologie: | 4a - Articolo in atti di congresso |
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|---|---|---|---|---|
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http://hdl.handle.net/2158/392846
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