Characteristics of annular-ring microstrip antenna

Dahele, J.S.; Lee, K.F.

doi:10.1049/el:19820718

Cited by 47 publications

(14 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 5 shows the performance of the proposed antenna at . It depicts that the proposed antenna is very sensitive to the feeding point location working on TM 11 mode whereas a single annular ring microstrip antenna is independent of feeding point location as reported by Lee and Dahele [1,13]. It is observed that displacement of feed point from inner periphery of the ring towards outer periphery causes considerable mismatching at lower resonance frequency and moderate mismatching at higher resonance frequency.…”

Section: Calculations and Discussion Of Resultssupporting

confidence: 53%

“…Although, in principle, the patch may be of any shape yet, in practice, only simple geometries like rectangular, square and circular structures are commonly employed. Like rectangular and circular patches, the annular ring microstrip antenna (ARMSA) has received the considerable attention of several investigators [1][2][3][4][5][6][7][8] due to its many salient features such as small size and broader bandwidth compared to other conventional patches. However, the main obstacle that restricts its wide applications in various fields is its inherent narrow bandwidth and low gain [1].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of a Gap-Coupled Stacked Annular Ring Microstrip Antenna

Ansari¹,

Ram²,

Singh³

2008

PIER B

View full text Add to dashboard Cite

Abstract-A theoretical analysis of a gap-coupled stacked annular ring microstrip antenna with superstrate is performed in order to obtain wider bandwidth operation. The effects of air gap, superstrate thickness and feeding point location on the antenna performance are analyzed in TM 11 mode using equivalent circuit concept. It is noted that the proposed antenna is very sensitive to the feeding point location in TM 11 mode while annular ring microstrip patch antenna is independent of feed point in that mode. The optimized proposed antenna shows an impedance bandwidth of 13.96% whereas the antenna without air-gap has 8.75% bandwidth and without superstrate it has bandwidth of 10.89%. The theoretical results are compared with simulated and experimental results.

show abstract

Section: Calculations and Discussion Of Resultssupporting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Analysis of a Gap-Coupled Stacked Annular Ring Microstrip Antenna

Ansari¹,

Ram²,

Singh³

2008

PIER B

View full text Add to dashboard Cite

show abstract

“…Annular ring patch antennas provide a compact radiating structure in their TM 11 mode. Annular ring elements have been widely investigated over the last 20 years [19][20][21][22][23][25][26][27] and due to their compact nature have often been considered as array elements. However, the compact resonant size of the lowest order TM 11 and TM 21 modes comes at the price of input impedance larger than the conventional 50 coaxial feed.…”

Section: Summary Of Annular Ring Patch Characteristicsmentioning

confidence: 99%

“…The resonance is then dictated by the cylindrical wave equation solutions, and radiation is considered a perturbation of this canonical problem 23 . Numerous analytical, numerical, and experimental solutions for the annular ring patch have been conducted [19][20][21][22][23][25][26][27] and will not be repeated here. In all cases the input impedance of the antenna, when fed with a coax was an order of magnitude higher than 50 at resonance for the lowest order, TM 11 , mode.…”

Section: Summary Of Annular Ring Patch Characteristicsmentioning

confidence: 99%

Pico Wireless Integrated Network Sensors (PicoWINS): Investigating the Feasibility of Wireless Tactical Tags

Merrill¹,

Sohrabi²,

Pottie³

et al. 2002

View full text Add to dashboard Cite

The public reporting burden for this collection of information is estimated to average 1 hou,r per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collectior of information, including suggestions for reducing the burden, This report documents the results of the PicoWINS investigation of the feasibility of tactical tags as a landmine replacementsystemSpecifically it provides a description of a tag prototype system, and of the design issues required to create a viable low power, autonomous wireless sensor system. Focus within this analysis was given to the radio frequency propagation limits for tag operation, including tag-to-tag links, tag-to-gateway links, and tag-to-munition links for homing ammunition. Within this context, a full propagation study as a function of height, range, and frequency was conducted in nineteen outdoor environments. Also explored were algorithms for locating the tags, and for optimizing the individual tags communication range. Each of the system components needed to create a tactical tag system are explored in detail, with focus given to the electromagnetic limitations imposed by the propagation environment, tag size, and tag power.

show abstract

“…The impedance variation of a single-layer printed annular ring has been thoroughly examined in the literature both experimentally and theoretically [2], [3]. For this reason and for the sake of brevity, an investigation is not included here.…”

Section: A Stacked Annular Ringmentioning

confidence: 99%

Rigorous analysis of probe-fed printed annular ring antennas

Kokotoff¹,

Aberle

Waterhouse³

1999

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

This paper presents calculated and measured results for the input impedance and radiation performance of probefed printed annular ring antennas. Geometries featuring stacked rings as well as shorting posts are considered. A numerical model is presented that is based on a full-wave spectral-domain momentmethod solution. In this solution, a specialized attachment modeexpansion function is used to model the connection between the probe feed and the printed ring. Measured results are presented and compare well with the theory. Annular rings are found to have certain advantages over circular and rectangular microstrip antennas.Index Terms-Microstrip antennas.

show abstract

Characteristics of annular-ring microstrip antenna

Cited by 47 publications

References 2 publications

Analysis of a Gap-Coupled Stacked Annular Ring Microstrip Antenna

Analysis of a Gap-Coupled Stacked Annular Ring Microstrip Antenna

Pico Wireless Integrated Network Sensors (PicoWINS): Investigating the Feasibility of Wireless Tactical Tags

Rigorous analysis of probe-fed printed annular ring antennas

Contact Info

Product

Resources

About