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# IEE Colloquium on Application and Validation of Design Tools for Antennas

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• ### Application of generalised circular and rectangular mode matching techniques to the design of antennas

Publication Year: 1993, Page(s):1/1 - 1/6
| | PDF (284 KB)

An existing rectangular mode matching package CORREC' previously developed for the analysis and design of pyramidal and corrugated horn antennas has been extended so that multiple rectangular apertures can be incorporated in a general fashion. Furthermore, ridged waveguide structures can also be included in the analysis. Such a generalised software package can be used to design mono-pulse feed ho... View full abstract»

• ### The development of an optimal NEC model of a skeletal biconical antenna for use with antenna factor prediction

Publication Year: 1993, Page(s):5/1 - 5/8
| | PDF (340 KB)

A useful development of the modelling approach to antenna calibration is to accept that it is not practical to measure antenna factors directly and instead compare values of another antenna parameter, which can be measured accurately, with predictions derived from a model. One such parameter is drive-point impedance and, if a model can be developed which returns a drive-point impedance that agrees... View full abstract»

• ### The validation and application of NEC and MININEC

Publication Year: 1993, Page(s):7/1 - 7/6
| | PDF (252 KB)

The computation of the radiation and scattering characteristics of antennas by means of the method of moments has now reached a stage of maturity after a decade or so of intensive use of various moment method codes. Arguably the most versatile of these, and certainly the best known is the Numerical Electromagnetics Code (NEC). Possibly equally well-known, though more limited in application, is MIN... View full abstract»

• ### Computer aided design of corrugated horns

Publication Year: 1993, Page(s):2/1 - 2/6
| | PDF (284 KB)

The conical corrugated horn has become the prime choice for use as a feed for high performance reflector antennas in communications, radar and remote sensing systems. This is partly because the radiation characteristics are ideal with good copolar pattern symmetry and low levels of cross polarisation. It is also because corrugated horns can be designed, using a computer, with a high degree of reli... View full abstract»

• ### IEE Colloquium on Application and Validation of Design Tools for Antennas' (Digest No. 1993/147)

Publication Year: 1993
| | PDF (12 KB)

The following topics were dealt with: generalised circular and rectangular mode matching for antenna design; CAD of corrugated horns; diffraction program verification and validation; NEC model of skeletal biconical antenna for antenna factor prediction; moment method models for HF band aircraft antenna; MININEC; microstrip antenna array; and PLANAR computer program View full abstract»

• ### PLANAR: a computer program for planar array antenna design

Publication Year: 1993, Page(s):9/1 - 9/5
| | PDF (228 KB)

Whereas the computation of the radiation patterns for planar array antennas is relatively straightforward for simple elements and uniform illumination, the design of practical array antennas and the evaluation of candidate configurations are facilitated by computer modelling. The computer program PLANAR provides a method of modelling array antennas for a variety of element types and aperture distr... View full abstract»

• ### Verification and validation of a diffraction program

Publication Year: 1993, Page(s):4/1 - 4/5
| | PDF (220 KB)

In the context of electromagnetics programs, verification is the checking of input data and validation is the checking of output results. These divide into several sections which partially correspond to the IEEE/ANSI definitions as follows (IEEE/ANSI terms in brackets): checking data entry for correct type and range (not allowed for in IEEE/ANSI); checking the program specification (error); checki... View full abstract»

• ### Problems concerning the validation of moment-method models of small aircraft in the HF band

Publication Year: 1993, Page(s):6/1 - 6/8
| | PDF (304 KB)

Considers an example of a moment-method modelling procedure which has been applied previously to other generic aircraft and antenna types. The overall aim of these studies is to provide a `recipe' for the prediction of airborne HF antenna system characteristics; the application of which will produce estimates of near as well as far-field dependent parameters which are credible and sufficiently acc... View full abstract»

• ### Design of a microstrip array antenna for a short-range two-way microwave system

Publication Year: 1993, Page(s):8/1 - 8/8
Cited by:  Papers (3)
| | PDF (184 KB)

In the design of a microstrip planar array antenna, the individual patches can be in close proximity to each other, it is therefore necessary to consider the effect that the mutual coupling between the individual patches has on the performance of an antenna. The paper presents a method which takes into account this mutual coupling between the patches and how it affects the input reflection coeffic... View full abstract»

• ### Computer aided design of complex antennas

Publication Year: 1993, Page(s):3/1 - 310
| | PDF (380 KB)

Presents the use of several numerical methods for designing complex W-band reflector antennas, for use in a radar system, and an overmoded cavity fed helical antenna array. The paper shows the use of the moment method (MM) and time domain finite difference simulation (TDFDS) for determining the VSWR of an axi-symmetric splash-plate reflector, and the MM for designing a low VSWR axi-symmetric horn/... View full abstract»