Design catalog

Every built-in design is an AntennaBuilder whose source is meant to be read and copied. Address them as family.name (the same names python -m antennaknobs list prints), and open any in the live simulator to drag its knobs. Many are modelled after L. B. Cebik (W4RNL)‘s articles.

Buried-wire designs need a finite ground

Three designs put conductors below the surface — verticals.buried_radial_vertical, verticals.elevated_buried_counterpoise, and specialty.buried_dipole. A buried wire only means anything under a Sommerfeld half-space, which is chosen at solve time rather than by the design, so solve them with --ground finite:<eps_r>,<sigma> (e.g. --ground finite:13,0.005). The PyNEC wrapper refuses a wire below z = 0 outright; a licensed local NEC-5 (--engine nec5) serves buried decks as of v0.61.0. Since the one-rise hub spelling (issue #1108) both engines run the buried-radial vertical’s default spelling: N radials to a buried hub with one rise to the node, which momwire’s crossing serve and NEC-5 both accept. The variants are still one engine each — momwire refuses detached (the stake convention: radials lying in the dirt, touching nothing), NEC-5 refuses bundle (the pre-#1108 default’s N coincident rises) — and each refusal names a spelling that engine does serve. On the shared default the two answers still differ by tens of ohms at 40 m over average soil, and that gap is now a clean measurement of one thing: NEC-5 injects the node current into the soil as a point electrode where momwire solves the crossing fill. Same deck, two node models. A deck’s first momwire solve builds its below-interface Sommerfeld tables (cached on disk thereafter); warm solves run in seconds — the crossing-junction kernels got their C++ twin in momwire 0.41.0. In the web app these designs declare the requirement themselves: loading one auto-selects finite ground with the Sommerfeld method (the panel notes it), so the default reflection-coefficient method’s by-name refusal never lands in your lap.

Dipoles

Design	Notes
dipoles.dipole_turnstile	Crossed dipoles fed in phase quadrature (turnstile)
dipoles.folded_invvee	Folded inverted-vee — the folded dipole’s impedance step-up, with drooped arms
dipoles.folded_invvee_balun	Folded inverted-V fed through a 4:1 balun and real coax — the Transformer showcase (issue #301)
dipoles.invvee	Inverted-vee dipole — the default quickstart example · variants: classic_edz, dipole, three_halves
dipoles.invvee_apex	Inverted-vee fed at its exact apex — no bridge wire (issue #898) · variants: classic_edz, dipole, three_halves
dipoles.invvee_catenary	Inverted-vee dipole whose arms hang as real catenaries (issue #698, unit 2)
dipoles.invvee_coax_station	Inverted-V fed through real coax — the classic “resonant antenna on 50 Ω line” station, modelled from the rig (issue #300) · variants: classic_edz, dipole, three_halves
dipoles.koch_dipole	Koch fractal dipole (L. B. Cebik, W4RNL — “fractal antennas”)
dipoles.ocf_dipole	Off-Center-Fed dipole (Windom): a half-wave fed away from the middle (L. B. Cebik, W4RNL)
dipoles.pota_invvee	POTA wire-gauge tradeoff: a 20 m inverted-V where the wire is a knob · variants: classic_edz, dipole, three_halves
dipoles.short_dipole_loaded	Center-loaded shortened dipole — the Load-branch showcase for issue #65

Loops

The delta loop is the catalog’s teaching showpiece — one loop laid out four ways (delta_loop, delta_loop_flyby, delta_loop_reflected, delta_loop_topdown), all exposing the same knobs (base, length_factor, angle_deg) and producing byte-identical wires. They differ only in how you specify the geometry, from writing every corner as coordinates to flying the whole shape with a Drone — see Many ways to express geometry.

Design	Notes
loops.bisquare	Bi-square: a two-wavelength loop worked as a vertical broadside curtain (L. B. Cebik, W4RNL)
loops.delta_loop	Corner-fed full-wave delta loop; corner coordinates from a closed-form expression for the top corner · variants: z100, z200
loops.delta_loop_flyby	The shipped delta loop, laid down as a full drone flyby — fly the whole perimeter and let the flight do the work, no coordinates written
loops.delta_loop_reflected	The shipped delta loop, built as a reflection hybrid: the drone is a trig-free point finder, an ry mirror gives the left half for free, and build_path stitches the corners
loops.delta_loop_slanted	Delta loop tilted out of the vertical plane by a slant_deg knob · variants: slant0, slant30
loops.delta_loop_topdown	The shipped delta loop, built as a top-down reflection flight: the same reflection hybrid as delta_loop_reflected, but the flight starts at the top — so the top height is right from move one and there is no z-offset pass
loops.diamond_loop	Full-wave diamond (square) loop fed at the bottom corner · variants: z100, z200
loops.diamond_loop_turnstile	Two diamond loops crossed and fed in phase quadrature (turnstile)
loops.horizontal_loop	Horizontal full-wave loop / “loop skywire” (L. B. Cebik, W4RNL)
loops.horizontal_loop_drone	A horizontal square loop, vertex-fed, authored with the 3D-turtle Drone
loops.inv_delta_loop	Inverted delta loop — the triangle flipped so the feed edge sits at the top · variants: z100, z200
loops.quad	Two-element cubical quad beam (L. B. Cebik, W4RNL)
loops.skyloop_lmatch	80 m triangular skyloop run on 17 m, matched to 50 Ω with an L-network — the Shunt-branch showcase for issue #65 (Q2, shunt-to-common) · variants: band_locked
loops.triangular_skyloop	Triangular horizontal full-wave loop (“skyloop”), fed at a corner · variants: band_locked

Beams

Design	Notes
beams.hb9cv	ZL-Special / HB9CV: a 2-element all-driven phased beam (L. B. Cebik, W4RNL)
beams.hexbeam	Hex beam — a W-folded 2-element beam on a hexagonal spreader footprint · variants: opt
beams.moxon	Moxon rectangle — a 2-element beam with folded-back element tips · variants: opt, original
beams.moxon_turnstile	Moxon turnstile: two up-firing Moxons in real quadrature (L. B. Cebik, W4RNL, QST Aug 2001 pp
beams.owa_yagi	OWA Yagi: 4 elements, whole-band flat 50-ohm feed (NW3Z/WA3FET concept, systematized by L. B. Cebik, W4RNL)
beams.owa_yagi_6el	6-element OWA Yagi — Cebik’s 2 m band-flat beam, wavelength-scaled (issue #497’s first VHF-native design) · variants: band70cm
beams.phased_driver_yagi	40 m wide-band phased-driver wire Yagi (L. B. Cebik, W4RNL, “Wide-Band 40-Meter Yagis”, Part 3)
beams.yagi	Yagi-Uda parasitic beam (driven element + reflector + directors)

Verticals

Design	Notes
verticals.bobtail	Bobtail curtain: a 3-element vertically-polarised broadside array (L. B. Cebik, W4RNL)
verticals.bruce	Bruce array: a series-fed vertically-polarised curtain (L. B. Cebik, W4RNL)
verticals.buried_radial_vertical	Ground-mounted quarter-wave vertical over a BURIED radial screen — the classic 40 m base-fed vertical, modelled with the radials where they actually are: in the dirt (momwire#524 phase 2, the crossing serve) · variants: bundle, detached, surface
verticals.challenger	KJ6ER’s “Challenger” — off-center-fed halfwave vertical with 4:1 unun · variants: band10, band12, band17, band20, band6, plus
verticals.dominator	KJ6ER’s “Dominator” — end-fed halfwave vertical with 49:1 transformer · variants: band10, band12, band17, plus
verticals.elevated_buried_counterpoise	Elevated-feed vertical over a buried radial screen — the antenna whose counterpoise is capacitive, not galvanic (momwire#553, the buried serve)
verticals.elt_whip	Parametric rebuild of the ELT whip on a 96-inch rounded ground-plane grid — the heavier of the two classic NEC performance benchmarks (whip_antenna_8ft_groundplane.nec from the W8IO NEC benchmarks page, http://www.w8io.com/nec-benchmarks.htm): 434 deck wires, ~4,400 segments · variants: coarse
verticals.four_square	Four-square phased vertical array — the diagonal-firing quadrature box (L. B. Cebik, W4RNL)
verticals.half_square	Half-square: a vertically-polarised wire antenna (L. B. Cebik, W4RNL)
verticals.inverted_l	Inverted-L: a bent, top-loaded vertical (L. B. Cebik, W4RNL)
verticals.inverted_l_tmatch	10 m inverted-L worked on the 12 m band through a T-network tuner — the first design with a pure interior circuit node (series C, shunt L, series C), exercising the MNA network core on the classic “wire antenna + T-match” situation
verticals.jpole	J-pole: an end-fed half-wave matched by a quarter-wave stub (L. B. Cebik, W4RNL)
verticals.phased_verticals	Two-element phased vertical array — the 90-degree cardioid (L. B. Cebik, W4RNL)
verticals.pota_performer	KJ6ER’s “POTA PERformer” — elevated quarter-wave with tuned radials · variants: band10, band12, band17, band20, band6, omni, single_radial
verticals.raised_vertical	Elevated quarter-wave vertical, fed above ground
verticals.rectangle	Rectangle “magnetic slot” SCV: a flattened 1 wl loop (L. B. Cebik, W4RNL)
verticals.right_angle_delta	Right-Angle Delta: the coax-friendly SCV delta (L. B. Cebik, W4RNL)
verticals.stub_matched_vertical	Quarter-wave vertical matched with nothing but cable (issue #648)
verticals.tri_moxon	Tri-Moxon switched vertical array (L. B. Cebik, W4RNL, 10-10 News #51) · variants: dir2, dir3
verticals.vertical	Quarter-wave vertical over ground

Wire antennas & curtains

Design	Notes
wire.doublet_balanced_tuner	Center-fed doublet on open-wire line into a genuinely balanced tuner — the FloatingBalun showcase (issue #589)
wire.doublet_ladder_tuner	88 ft doublet + 100 ft of 600 Ω open-wire line + lossy T-network tuner — the “non-resonant wire and a matchbox” station, modelled from the rig (issue #300) · variants: classic_edz, dipole, three_halves
wire.edz	Extended Double Zepp: 1.25 wl centre-fed doublet + series match (L. B. Cebik, W4RNL)
wire.efhw_sloper	End-fed half-wave sloper with a real 49:1 unun — “the POTA antenna, complete” (issue #329) · variants: band40
wire.expanded_lazy_h	Expanded Lazy-H: two stacked EDZs fed through a real phasing harness (L. B. Cebik, W4RNL)
wire.lazy_h	Lazy-H: two stacked collinear elements fed in phase (L. B. Cebik, W4RNL)
wire.longwire	Resonant multi-wavelength long-wire (L. B. Cebik, W4RNL)
wire.rhombic	Terminated rhombic: a traveling-wave directional long-wire (L. B. Cebik, W4RNL, “Long-Wire Antennas” / “The Terminated Vee-Beam and Rhombic”)
wire.sterba	Sterba curtain: a broadside, bidirectional, horizontally-polarised curtain array (E. J. Sterba, Bell Labs, 1930s)
wire.sterba_bl	Sterba curtain whose interior risers are ideal balanced line, not wire (momwire-only)
wire.sterba_tl	Sterba curtain, transmission-line sister design of sterba.py
wire.terminated_longwire	Terminated end-fed long-wire: the directional single wire (L. B. Cebik, W4RNL, “Long-Wire Antennas”, Part 2)
wire.vbeam	Resonant V-beam: two long wires splayed into a V (L. B. Cebik, W4RNL)
wire.w8jk	W8JK flat-top beam: a 2-element all-driven 180-degree array (L. B. Cebik, W4RNL, after John Kraus W8JK)
wire.zepp	End-fed half-wave “Zepp” with a tuned-stub feeder (L. B. Cebik, W4RNL)

Broadband

Design	Notes
broadband.discone	Discone: a broadband vertical (disc + cone), modelled as a wire cage (L. B. Cebik, W4RNL)
broadband.g5rv	G5RV doublet with a matched-line section (analysed at length by L. B. Cebik, W4RNL, “The G5RV Antenna”)
broadband.lpda	Log-periodic dipole array (LPDA) (L. B. Cebik, W4RNL; ARRL Antenna Book LPDA chapter)
broadband.t2fd	T2FD — Terminated Tilted Folded Dipole (G2BCX; modeled per L. B. Cebik, W4RNL, “broadband wire antennas”)

Multiband

Design	Notes
multiband.fandipole	Fan dipole — parallel dipoles off one feed for several bands · variants: five_band, pair_12_10, pair_17_15
multiband.hexbeam_5band	Stacked hexbeam: up to 5 concentric hexbeam shapes stacked along z, each sized to its own band’s wavelength, sharing one common feed by default (band 0 driven, the rest coupled up the stack — see the feed-mode note below) · variants: opt, opt_coupled, opt_physical
multiband.trap_dipole	Dual-band trap dipole — Load(parallel=True) showcase for issue #65
multiband.trap_fan_dipole	Four-band trapped fan dipole — combines fandipole geometry with the trap_dipole Load(parallel=True) idiom · variants: band0_full, band0_inner, band1_full, band1_inner
multiband.twoband_fan_dipole	Two-band fan (parallel) dipole — two dipoles bonded at a common feed · variants: current_physical, s01, s015, s01_eps001, s02, s025, s03, s05, s07

Arrays

Phased / stacked arrays of the elements above — the arrayblock solver’s showcase (see the solver guide):

Design	Notes
arrays.bowtie16x1	16-element linear bowtie array — sixteen identical bowtie elements on a single row (constant height), each fed in phase
arrays.bowtie1x2_bl	1x2 stacked bowtie array with a balanced-line corporate feed
arrays.bowtie4x4	4x4 broadside bowtie panel — sixteen identical bowtie elements on a regular y-z grid, each fed in phase
arrays.bowtiearray	2x2 phased stack of bowtie dipoles
arrays.bowtiearray1x2	Side-by-side bowtie pair (1x2)
arrays.bowtiearray2x4	2x4 phased bowtie curtain — the catalog’s largest stack
arrays.delta_looparray	Side-by-side delta-loop pair (1x2) · variants: dy3, dy35, dy45
arrays.delta_looparray_1x4	Four delta loops in a broadside row (1x4)
arrays.delta_looparray_1x4_grouped	1x4 delta-loop row with per-group knobs (inner/outer pairs tuned separately)
arrays.delta_looparray_2x2	2x2 phased stack of delta loops
arrays.delta_looparray_network	delta_looparray driven by two TLs from a central virtual driver
arrays.folded_invveearray	2x2 phased stack of folded inverted-vees
arrays.hentenna_array	Side-by-side hentenna pair (1x2)
arrays.hourglass_array	Side-by-side hourglass pair (1x2)
arrays.invveearray	2x2 phased stack of inverted-vee dipoles · variants: old
arrays.lumped_coupled_pair	Lumped-coupled dipole pair — the TwoPort-branch showcase for issue #65
arrays.moxonarray	2x2 phased stack of Moxon rectangles
arrays.yagiarray	2x2 phased stack of Yagi beams

Specialty

Design	Notes
specialty.bowtie	Bowtie dipole — triangular fan arms for broadened bandwidth
specialty.buried_dipole	Wholly-buried horizontal dipole — the underground cousin of the beverage-on-ground, and the simplest thing momwire’s buried serve can be asked (momwire#553 phase 0)
specialty.continuous_helix	Normal-mode helical vertical, continuous winding (L. B. Cebik, W4RNL)
specialty.faceted_helix	Normal-mode helical vertical, faceted winding (L. B. Cebik, W4RNL)
specialty.hentenna	Hentenna — the Japanese rectangular loop, fed off-center for vertical polarization · variants: z100, z50
specialty.hentenna_slant	Slanted hentenna parameterised by top-rectangle perimeter + two aspect ratios · variants: z100, z50
specialty.hourglass	Hourglass loop — a crossed (bowtie-folded) rectangular loop
specialty.hourglass_slant	Hourglass loop tilted out of the vertical plane

Generated from source

The listings on this page are generated by scripts/generate_catalog.py from the package’s design tree — each entry’s description is the first sentence of the design module’s docstring, and its variants come from the *_params convention. Do not edit the tables by hand; edit the docstrings and regenerate. The test suite fails if this page drifts from the code.