It's a C0G/NP0 dielectric, which is 'pretty good'. That is, it's not a high K ceramic. Unless you have a very demanding application, so a very low noise VCO, a very narrow filter, or very high power transmission, it will probably do for Q. There are higher Q capacitors available, look at ATC for instance, if you need it.
0603 is a reasonable package size to be using to several GHz.
The capacitor is specified as 'multi-layer'. This is where you might have problems if you want to switch between different manufacturers, as the detail of the internal construction will affect the residual inductance. If you stick to the same range from the same manufacturer, you ought to be fairly safe. In practice, 1GHz is unlikely to cause a problem due to construction variation, unless you are really pushing the performance. I certainly agree with Oleksandr's comment that the case size is likely to introduce more residual inductance than the internal construction
Try some in circuit, and see whether they work.
You have specified that the application is 'antenna matching'. Capacitor Q will have two potential effects here in this application. On receive, the loss will increase noise. However the Q would have to very bad to be significant compared to other variables. On transmit, the loss will reduce the radiated power, and cause the capacitor to get hot. Again the Q will need to be very bad to be significant in the transmitted power calculations. How powerful is the transmitter, what loss would be needed in the capacitor to cause its temperature rise to exceed data sheet limits?
Rather than go all the way to ATC's head-banging RF performance, you could try looking at a range of capacitors that do discuss RF Q, for instance Kemet's here, same C0G dielectric, same case sizes.