Parallel-plate mode suppression in a slot coupled microstrip antenna with a triplate line feed

1997 ◽  
Author(s):  
M. Yamamoto
Keyword(s):  
Microstrip Antenna ◽  
Parallel Plate ◽  
Mode Suppression

scholarly journals Radiation Efficient Unidirectional Low-Profile Slot Antenna Elements for X-Band Application

2005 ◽  
Vol 3 ◽  
pp. 143-146
Author(s):  
C. Löcker ◽  
T. Vaupel ◽  
T. F. Eibert
Keyword(s):  
Parallel Plate ◽  
Radiation Efficiency ◽  
Slot Antenna ◽  
Coupling Coefficients ◽  
Rectangular Slot ◽  
Mode Suppression ◽  
Low Profile ◽  
Shorting Pin ◽  
Strong Excitation ◽  
Back Reflector

Abstract. Slots in metallic ground planes are very promising candidates for conformal antenna applications. However, a low-profile unidirectional antenna requires a back reflector close to the slot and the resulting stripline feed causes strong excitation of parallel-plate modes. In this contribution, we consider unidirectional reflector-backed slot configurations with parallel-plate mode suppression by shorting pins. Starting from a parametric study with respect to shorting pin location and back reflector distance, we present a stripline-fed rectangular slot element with radiation efficiency of more than 80% and a bandwidth of about 5% at centre frequency 10GHz. A careful optimisation of shorting pin locations guarantees reliable parallel-plate mode suppression without deteriorating the slot radiation behaviour. Coupling coefficients between parallel and aligned rectangular slot elements are presented. For increased bandwidth applications, a bow-tie slot element with about 8% bandwidth and radiation efficiency of close to 80% is proposed.

A Theoretical Analysis of a Circular Microstrip Antenna in a Parallel-Plate Waveguide

2013 ◽  
Vol E96.B (1) ◽  
pp. 173-181
Author(s):  
Narihiro NAKAMOTO ◽  
Tomohiro OKA ◽  
Shoichi KITAZAWA ◽  
Hiroshi BAN ◽  
Kiyoshi KOBAYASHI
Keyword(s):  
Theoretical Analysis ◽  
Microstrip Antenna ◽  
Parallel Plate ◽  
Parallel Plate Waveguide ◽  
Circular Microstrip Antenna

Surface-mode suppression in a thick microstrip antenna by parasitic elements

1995 ◽  
Vol 8 (3) ◽  
pp. 145-146 ◽  
Author(s):  
Choon Sae Lee ◽  
Vahakn Nalbandian ◽  
Felix Schwering
Keyword(s):  
Microstrip Antenna ◽  
Surface Mode ◽  
Mode Suppression
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