You can use a wireless repeater or extender to increase your wireless range. Usually a repeater is based on a single radio that toggles back and forth between a wireless client (which connects to your primary wireless router) and its own wireless AP (presumably closer to your more distant wireless devices). And yes, it has the *potential* to reduce your throughput since it has to spend approx. half the time being either a wireless client OR wireless AP. It can't do both at the same time. As with all radio, only two wireless stations can be communicating at the same time on the same freq, all others must wait. I say *potential* because unless your internet connection is faster than half your wireless speed, it's not going to matter. For example, if your ISP is delivering 10Mbps, and your wireless is capable of 30Mbps, and you add a wireless repeater which halves your wireless throughput to 15Mbps, the repeater is still faster than what the ISP can deliver. However, it will very likely reduce the throughput of *local* transfers since those usually have much greater capacity.
An extender differs from a repeater in that the former uses TWO radios, and therefore both the wireless client and wireless AP can use different freqs/channels, and thus no loss in throughput. However, repeaters usually cost more. Also, to make things a little more difficult, manufacturers often don't make this distinction between them. Many often use the terms interchangeably, which is unfortunate. So you really need to check the specs and ask questions before buying to be sure you get what you want.
Most ppl opt for the (single radio) repeater. In fact, many will use routers w/ third party firmware (e.g., dd-wrt) to configure these repeaters. You can also build your own extender by taking any wireless router, configuring it as an AP (no routing), and patching a wireless ethernet bridge (aka wireless client) to one of its LAN ports. And if you’re fortunate enough to already have the components in-hand (perhaps older, otherwise unused devices), it can be done relatively inexpensively.
Another option is to use powerline or MoCA as a substitute for ethernet cabling between the router and remote location, then dropping a wireless AP from there. This can often work better and more reliably in situations where you have dead zones that wireless simply can penetrate. If using powerline, I’d stick w/ adapters rated 500Mbps or better. For MoCA, 100Mbps or better (actual) is common, but (afaik) can’t coexist w/ an active satellite connection (cable is OK).