Title :
Frequency invariant far-field beam pattern of UWB printed circular monopole antenna array
Author :
Ihsan, Zainul ; Solbach, Klaus
Author_Institution :
Hochfrequenztech., Univ. Duisburg-Essen, Duisburg, Germany
Abstract :
This paper applies the concept of the frequency invariant far-field beam pattern to a printed linear UWB antenna array. The theory of the broadband frequency invariant far field sensor from the field of acoustics is adopted and applied to a discrete UWB printed circular monopole antenna array (PCMAA) for the frequency range from 3.1 to 10. 6 GHz. Low pass filters (LPF) are employed to feed the individual elements of the PCMAA in order to establish an array of frequency invariant electrical width. Although the array design deviates from the ideal design by using uniform element spacing, the full wave simulation and the measurement verify that the variation of the beamwidth across the frequency range can be suppressed by filtering the PCMAA element excitation with a set of LPF.
Keywords :
antenna radiation patterns; beam steering; linear antenna arrays; low-pass filters; microstrip antenna arrays; monopole antenna arrays; ultra wideband antennas; LPF; PCMAA element excitation filtering; acoustics field; beamwidth variation; broadband frequency invariant far field sensor; discrete UWB printed circular monopole antenna array design; frequency 3.1 GHz to 10.6 GHz; frequency invariant electrical width array; frequency invariant far-field beam pattern; full wave simulation; low pass filter; printed linear UWB antenna array; uniform element spacing; Acoustic beams; Antenna arrays; Arrays; Cutoff frequency; Filtering theory; Low pass filters; Ultra wideband antennas; UWB antenna array; frequency invariant beam pattern; printed circular monopole antenna;
Conference_Titel :
Microwave Conference (GeMiC), 2012 The 7th German
Conference_Location :
Ilmenau
Print_ISBN :
978-1-4577-2096-3
Electronic_ISBN :
978-3-9812668-4-9