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This paper presents design of a varactor-loaded frequency-tunable ring microstrip antenna with reduced bias circuits. Two varactor diodes are mounted on square ring patch element fed by an L-probe to realize a frequency-tunable microstrip antenna. An L-shaped feeding probe is used to realize impedance matching of the ring microstrip antenna. Resonant frequency of the proposed antenna can be tuned...
This paper discuss about a MIMO monopole microstrip antenna for LTE application. The MIMO antennas that are currently commercially available for LTE applications generally only cover a narrowband of LTE frequency. Meanwhile, the antenna to cover wider bandwidth will cost a high price. A MIMO microstrip antenna is proposed to overcome that issue due to its small size compared to other antenna for wider...
In this paper, a double balanced multiplier (DBM) integrated circularly polarized microstrip antenna is investigated experimentally. The DBM is one of functional microwave circuits. The DBM is loaded in order to achieve a circularly polarized antenna with wideband and its sense switching function. Performances of the antenna due to the nonlinear characteristics of the DBM depend on the input power...
In this paper antenna on silicon is presented. This paper proposes design of micro strip antenna on silicon with improved bandwidth. Proposed antenna is for X-band frequency. To improve bandwidth, ground defect being created on silicon substrate. With this we are improve bandwidth by 4–8 times. Designed verified both in HFSS simulation tool and on VNA after fabricating device.
A new circular polarization microstrip antenna having a defected ground plane is presented in this paper. A defect on the ground plane is introduced by inserting a square ring slot just below one of the top corners of the patch. The inserted slot on the ground creates a perturbation in the patch as like as conventional perturbed circular polarization antennas. The measured 3-dB axial ratio bandwidth...
A novel multi-band single feed microstrip antenna with metamaterial structure that satisfies WiMAX and WLAN applications is proposed in this paper. The conventional antenna consists of a rectangular microstrip patch at a frequency band of (4.9752 ∼ 5.1777) 5.08 GHz. By loading a complementary Split Ring Resonator (CSRR) at the ground plane, three frequency bands: 2.5113 ∼ 2.609, 2.9026 ∼ 3.2056, and...
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