Design and Development of Low-Cost Low Sidelobe Level Slotted Waveguide Antenna Array in X-Band

Kumar, Pramod; Kedar, Ashutosh; Singh, Anil Kumar

doi:10.1109/tap.2015.2475632

Cited by 39 publications

(14 citation statements)

References 17 publications

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“…At lower frequency bands like L-, S-, and C-bands, PCB technology is more frequently used unless very high efficiency is required, often at the expense of higher cost. There are attempts at using lowcost techniques to fabricate slotted waveguide arrays where various parts and plates are precision machined and "glued" together using silver epoxy [14] ; albeit only a relatively small array with 23.2-dBi measured gain is developed. Extending to a larger array with more than 30-dBi gain with this low-cost technique may be challenging.…”

Section: Br Ief R E V Ie W Of Wav Egu Ide T Echnologymentioning

confidence: 99%

Application of Direct Metal Laser Sintering to Waveguide-Based Passive Microwave Components, Antennas, and Antenna Arrays

2017

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| Direct metal laser sintering (DMLS), sometimes used interchangeably with the term direct metal sintering (DMS), is an additive manufacturing (AM) technique of synthesizing metallic parts from metal alloy powder. This paper looks at the application of DMLS to waveguide-based passive microwave components, antennas, and antenna arrays. Communication or radar systems use waveguide-based components and antennas to transport and manipulate radio-frequency (RF) power because they are arguably the most efficient. However, they are mostly used only in selected high-performance systems, especially at frequencies at X-band and Ku-band, because they are costly and difficult to fabricate as specialized processes like dip brazing, electron beam welding, and electroforming are needed for making complicated parts. The advent and the maturing of the DMLS technology may revive the fortunes of waveguide-based components and antennas as designs that are previously difficult to fabricatecan be now easily handled. Furthermore, as DMLS continues to become more affordable, its versatility means that a microwave or antenna engineer can now leverage on DMLS to design very efficient novel microwave components and antennas that are previously difficult to fabricate or not even practical previously.

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Section: Br Ief R E V Ie W Of Wav Egu Ide T Echnologymentioning

confidence: 99%

Application of Direct Metal Laser Sintering to Waveguide-Based Passive Microwave Components, Antennas, and Antenna Arrays

2017

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“…The IF phase shifting is implemented in this research because it can provide much better performance compared to RF and LO phase shifting [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. The slotted waveguide antenna array is selected because it can provide high power handling capability, low loss, small size, narrow beamwidth, good bandwidth, and high gain [15][16][17][18][19][20][21][22][23][24][25]. This paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

Design and simulation of an analog beamforming phased array antenna

Elhefnawy

2020

IJECE

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In this paper, a phased array antenna is designed and simulated. The antenna array consists of four circularly polarized slotted waveguide elements. The antenna array is simulated using CST MWS. The simulation results for the proposed antenna array at different values of progressive phase shift demonstrate that the S‒parameters for all four ports are less than ‒10 dB over at least 2% bandwidth, the simulated maximum gain is 13.95 dB, the simulated beamwidth can be 19˚ or narrower based on the value of the progressive phase shift. , the range of frequencies over which the simulated Axial Ratio (AR) is below 3 dB is not fixed and varied according to the selected progressive phase shift. The proposed four-element RF front-end is simulated using Advanced Design System (ADS) at operating frequency of 9.6 GHz. The obtained simulation results by ADS indicate the feasibility of implementing the proposed RF-front end for feeding the antenna array to realize analog beamforming.

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“…The difference between the electric field intensities at the edges of a slot which has some distance from the centreline of the waveguide causes radiation from the slot. Alternating slots distance from the centre feed line in a waveguide slot array antenna undergoes side lobes in the radiation pattern [8,13,14]. Slots should be displaced on alternative sides of the centreline of the broad wall to have an in-phase radiation.…”

Section: Introductionmentioning

confidence: 99%

Dual‐band ridged tapered waveguide slot array antenna with cross‐polarisation reduction

Khorramizadeh¹,

Mallahzadeh²,

Jesri

et al. 2018

IET Microwaves, Antennas & Propagation

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A novel dual‐band waveguide slot array antenna with low cross‐polarisation is proposed. The main structure of the proposed antenna consists of two waveguides in which the top broad wall of the smaller waveguide, a WR‐28 Ka‐band waveguide, is connected to the top broad wall of the larger waveguide, a WR‐90 X‐band waveguide. The WR‐28 waveguide operating in the higher frequency band of the proposed antenna acts as a ridge inside the WR‐90 waveguide operating in the lower frequency band. For achieving a suitable side lobe level (SLL) and cross‐polarisation in the lower frequency band, the slots are placed close to the higher frequency waveguide and side ridges are placed beside each slot. A 2D graph is presented in which the normalised resonance conductance versus the offset of a side ridge from the outer edge of the lower frequency waveguide is shown, while the slot is located between the higher frequency waveguide and the side ridge. By applying proper coefficients to this graph, appropriate offsets from the outer edge of the lower frequency waveguide for the side ridges are obtained so that a low SLL can be realised.

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Design and Development of Low-Cost Low Sidelobe Level Slotted Waveguide Antenna Array in X-Band

Cited by 39 publications

References 17 publications

Application of Direct Metal Laser Sintering to Waveguide-Based Passive Microwave Components, Antennas, and Antenna Arrays

Application of Direct Metal Laser Sintering to Waveguide-Based Passive Microwave Components, Antennas, and Antenna Arrays

Design and simulation of an analog beamforming phased array antenna

Dual‐band ridged tapered waveguide slot array antenna with cross‐polarisation reduction

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