Variations of P-shape microstrip antennas for multi-band dual polarised response

Deshmukh, Amit A.; Verma, Priyanka; Pawar, Shefali
February 2019
IET Microwaves, Antennas & Propagation;2019, Vol. 13 Issue 3, p398
Academic Journal
A novel design of a P-shape microstrip antenna is proposed. The stub in the P-shape patch modifies the frequency and resonant mode distributions at second-order TM20 mode which along with TM10 and TM01 modes yields dual-polarised triple-frequency response, showing 1−1.5% of impedance bandwidth (BW) at each frequency. To enhance the gain, air-suspended designs for the P-shape patch are proposed. It yields the broadside gain of 1.5−5 dBi across three frequencies. Enhancement in BW of the P-shape patch is obtained by using its gap-coupled variations leading to 69- or 96-shape configurations. On a thinner substrate, these gap-coupled antennas give BW of 3−5% across three frequencies.


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