Ange Postecoglou's side have won four out of their past six Premier League games, the only defeat in that run coming when beaten 4-2 at Brighton on December 28.
Spurs were edged out 1-0 at home by Manchester City in their FA Cup fourth-round tie last Friday night, with Nathan Ake eventually making the late breakthrough.
Frank has been impressed by the way Australian Postecoglou has his team approach each game, no matter what the opposition may throw at them.
"Ange has done a good job at Tottenham in many ways," Frank told a press conference.
"I like the offensive approach, I like the 'all-or-nothing' approach as well. I think it is brave and you need to be brave to create big things. So that looks good.
"But no matter what style you have, no matter what you do, there is a lot of strengths - but there is also some weaknesses, so it is up to us to try and minimise the strengths of Tottenham tomorrow.
"Their high pressure, the way they try to dominate games and how they try to break through teams quite quickly - can we keep that at a minimum? If we can, I think we have a good chance.
"We come in there with an offensive approach as well. We know we are facing a fantastic team and club, but we know that when we are on it, we can go anywhere and win."
Brentford will have captain Christian Norgaard available for the trip to north London, the midfielder having missed the past two matches because of a foot injury.
On-loan Spurs full-back Sergio Reguilon, though, cannot play against his parent club.
Frank hopes to be able to further strengthen the squad ahead of Thursday evening's transfer deadline with a potential £31.5m move for Club Brugge winger Antonio Nusa now in doubt over issues with the player's medical.
"It could be difficult, but we have been working on players who could also be possible in the summer, sometimes we don't get them the first time, we get them the second time," he said.
Brentford ended a five-match losing Premier League run when they beat Nottingham Forest 3-2 on January 20 in Ivan Toney's return to action after his lengthy betting ban.
Frank hopes the squad can now build some momentum to push back up the table.
"It is important to win football matches - when you have lost five (in a row) it is always a little bit more important," he said.
"We need to keep performing, keep doing what we think is the right way to do things and play with a bit more confidence."