How to avoid jagged ellipses on HTML canvas?

I'm trying to draw a circle on my canvas, but it's coming out jagged.

Here's how I'm drawing the ellipse:

ctx.ellipse(currX + room.location[0], currY + room.location[1], radius, radius, 0, 0, 2 * Math.PI)

Here's what I've tried to fix the issue with:

ctx.imageSmoothingEnabled = true;
ctx.imageSmoothingQuality = 'high';
ctx.filter = 'best';
ctx.antialias = 'subpixel';