CPW Fed UWB Antenna by EBGs With Wide Rectangular Notched-Band

Cheng

Int J RF Microw Comput Aided Eng

et al. 2019

A miniaturized ultra‐wideband (UWB) monopole antenna with reconfigurable multiple‐band notched performance is demonstrated. By modifying the shape of the patch and the ground plane, the UWB operation is achieved. The first and second band‐notches are respectively generated by etching a rectangular slot with open ends and a U‐shaped slot in the patch, and the third band‐notch is produced by loading a C‐shaped parasitic element beneath the patch. To realize the reconfigurable band‐notched functions, four PIN diodes are inserted in three band‐rejected structures. The antenna has a compact dimension of 30 mm × 26 mm. It can switch between a UWB state and several band‐notch states by alternating the states of the diodes. Also, good radiation patterns are obtained.

Section: Introductionmentioning

confidence: 99%

Reconfigurable ultra‐wideband monopole antenna with single‐, dual‐, and triple‐band notched functions

Cheng

Int J RF Microw Comput Aided Eng

et al. 2019

Int J RF Microw Comput Aided Eng

“…Single notch characteristic CPW fed UWB antenna has been designed with a compact size of 50 × 48 mm 2. Dual notch characteristic antennas have been designed with sizes of 48 × 36 mm 2 and 50 × 50 mm 2 , respectively . Similarly, tri‐notch UWB antennas have been designed in with the compact size of 35 × 35 mm 2 and 30 × 39.3 mm 2 , respectively.…”

Section: Introductionmentioning

confidence: 99%

Design of tri‐notched UWB antenna based on elliptical and circular ring resonators

Rahman

Cao

et al. 2018

This article presents the design of a compact coplanar waveguide (CPW) fed Monopole Antenna for ultra‐wideband (UWB) applications. The semi‐circular shaped radiator is fed with a 50‐Ω line that resonates within the UWB frequency range. Two notching elements are used to reduce narrowband interferences. An elliptical ring resonator is etched out from the radiator to suppress 3.97‐4.48 GHz narrowband interference whereas, narrow bands from 5.79 to 6.57 GHz (WLAN) and 7.30‐7.60 GHz (X band downlink) were suppressed by loading a metamaterial inspired circular ring resonator behind the feed line. Moreover, the lower notching band due to the elliptical ring resonator can be further tuned to lower resonance frequencies by controlling the capacitance of the embedded varactor diode. The antenna has a compact size of 36 × 34 × 1 mm3. The antenna is simulated, fabricated and measured in an Anechoic Chamber. The measured results are in good agreement with the simulated results.

“…In this section, the SAR of the proposed antenna is investigated using a simulation model. The different fragments of the human body are modeled as an equivalent flat phantom of dimension 33x22x18 mm 3 . The local SAR of the muscle phantom at the separation of 5 mm is studied, as shown in Fig.…”

Section: Sar Evaluationmentioning

confidence: 99%

“…3(a)), on account of its ultra-wide bandwidth and good radiation characteristics [2][3][4][5][6][7][8][9]. The antenna is built on FR4 Epoxy dielectric substrate with dielectric constant 4.4, dielectric loss tangent 0.018, thickness 1.57mm.…”

Section: Antenna Design and Analysismentioning

confidence: 99%

“…Using different configurations, numerous printed monopole structures including rectangular and circular shapes have been presented in the literature [2][3][4][5][6][7][8][9]. The aptness of the UWB antennas is to replace the multiple antennas of a multi-radio system by covering the different narrowband services as WLAN, WiMax, GSM, UMTS, Wi-Fi, WMTS and MICS through a single antenna.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modeling of a PIN Diode RF Switch for Re configurable Antenna Application

2018

The paper proffers the procedure to model a PIN diode RF switch using full-wave EM solver, HFSS and utilizes the switch to built a simple partial ground plane antenna with omnidirectional radiation pattern. The proposed antenna has ability to tune it from ultra-wideband to narrowband mode. The frequency reconfigurability is accomplished by incorporating a rectangular slot resonator and a PIN diode RF switch embedded in the partial ground plane. The antenna demonstrates -10 dB impedance bandwidth from 500 MHz to 6 GHz in the ultra-wideband mode and 1.125 GHz to 2 GHz in the narrowband mode. A parasitic is stacked in the ground plane to improve the impedance matching and a rectangular slot is fused to explore the bandwidth-limiting possibility of the antenna. The optimization of the antenna is done by full-wave EM solver, HFSS and Specific Absorption Rate (SAR) of the antenna is examined using the equivalent flat tissue phantom. A prototype of the proposed antenna is fabricated and execution is accepted by measured results. The proposed antenna has simple and miniature structure, low SAR (0.41 W/Kg), omnidirectional pattern and low cross-polarization (<-15dB in E-plane and <-30dB in H-plane).